Bestseller
SEMCO Liquid Membrane™ Waterproofing
- One-step application – Roll, brush, or spray on two coats. No mixing, no guesswork.
- Stretches, won't crack – Flexes up to 1300% to bridge cracks without tearing.
- Works on almost anything – Sticks to concrete, wood, metal, tile, and more.
- Built for wet areas – Ideal for basements, showers, decks, foundations, and pools.
- DIY-friendly, pro-grade – Easy enough for anyone to apply, strong enough to perform like a professional product.
Color:Semi-Clear
Select Your Size:1 Pint
Quantity:
💡 Did you know? 1 Pint covers up to:
Concrete: up to 15 sq ft*
Wood: up to 15 sq ft*
Metal/Aluminum: up to 15.6 sq ft*
Pools/Foundation: up to 10.5 sq ft*
* Based on 2 Coats. Coverage may vary based on surface porosity and application method.
1300% Elongation
UV Resitant
Low Odor & Low VOC
Made in USA- Forms a continuous waterproofing barrier with exceptional adhesion and reduces crack transmission for all surfaces.
- Exceptional as metal roof sealant and exterior roof waterproofing
- Great for basement waterproofing and foundation waterproofing
- Can be applied on Concrete, Wood, Stone, Tiles, Interior&Exterior Cladding,CMU block, Metal&Aluminium, Drywall boards, ICF blocks, RV Roofs
- Safe for fish, plant produce and saltwater use. For Interior, exterior, fully submerged in water and below grade applications
- Easy application with roller, brush or airless sprayer
- 5 year standard limited warranty, 10 year for non-traffic surfaces
1. True Waterproofing — Not Just Sealing
Forms a continuous seamless rubber membrane that physically blocks water migration, even on negative-side (interior) applications. Not a topical treatment that wears off.
→ Spec: Negative-side capable
2. Bonds to Everything
Adheres to concrete, wood, metal, aluminum, ceramic tile, CMU block, fiberglass, ICF, drywall, and RV roofing materials. One product for every surface type on your project.
→ Spec: 10+ substrate types
3. Outdoor UV Stability
Fully UV-resistant and suitable for exterior and exposed applications — unlike most rubber-based membranes that degrade under prolonged sun exposure. Ideal for roofs and pool decks.
→ Spec: UV-stable exterior use
4. Non-Toxic. Safe for Life.
VOC-free formula is certified safe for fish, plants, saltwater, and drinking water applications once fully cured. Perfect for water features, koi ponds, and fountains.
→ Spec: VOC-free · Non-toxic
5. Fast Dry. Quick Recoat.
Each coat dries to touch in about 1 hour, compared to several hours for competing products. Apply multiple coats in a single day to complete your project faster.
→ Spec: < 45 min dry time
6. Color + Coat in One Step
Available in 15 colors that integrate the color directly into the waterproofing coat — no separate paint needed. Choose from Semi-Clear through bold SEMCO Orange.
→ Spec: 15 colors available
7. Crack-Bridging Anti-Fracture
The elastomer matrix stretches up to 1,300% — bridging hairline cracks up to ¼” without additional treatment. Fabric reinforcement extends coverage to larger cracks and movement joints.
→ Spec: 1,300% elongation
8. Professional Grade at DIY Cost
At $0.43/sq ft on a 5-gallon pail, SEMCO costs nearly half the price of rubber-based alternatives ($0.79/sq ft) while outperforming them in every technical metric.
→ Spec: $0.43/sq ft from 5 gal
9. Warranty You Can Count On
Backed by a 5-year standard limited warranty, and 10 years for non-traffic surfaces. Proven in basements, pools, and flat roofs across thousands of installations.
→ Spec: Up to 10-year warranty
- Concrete & below-grade foundations: Seals micro-pores to block rising groundwater and hydrostatic pressure.
- Basement walls & waterproofing: Stops lateral moisture penetration and eliminates dampness on interior or exterior masonry.
- Exterior waterproofing: Creates a seamless weather-shield that stops rain driving into building envelopes.
- Waterproof sealer for wood: Prevents rot, warping, and water-logging while allowing the timber to breathe.
- Fiberglass & concrete pools: Rated for permanent deep aquatic submersion and continuous pool chemical exposure.
- Stone & tile underlays: Formulates an aggressive anti-fracture barrier directly beneath thin-set mortar beds.
- Interior & exterior cladding: Back-seals siding and facade panels against trapped moisture and wind-driven rain.
- Metal & aluminum surfaces: Adheres tightly to slick non-porous metals to stop rust and oxidation tracks.
- Drywall, sheetrock, & cement boards: Toughens fragile wall boards into completely water-impermeable tile backing substrates.
- ICF blocks (Insulated Concrete Forms): Safely waterproofs polystyrene foam blocks without melting or degrading the material.
- Roof & asphalt shingles: Renews old shingles with a seamless, UV-stable elastomeric membrane coating.
- Zero-experience DIY friendly: Ready-to-use, single-component formula straight out of the bucket with no complex chemical mixing or measuring required.
- Standard paint roller application: Applies effortlessly using a standard 1/2" nap roller cover, making vertical walls and flat floors quick to coat.
- Rapid-dry time window: Dries to the touch in just under an hour, allowing you to apply your mandatory second coat on the same day.
- Eco-friendly & low odor: 100% non-toxic, water-based, and VOC-free, making it completely safe for unventilated indoor bathrooms, basements, or tight crawlspaces.
- Built-in coverage tracking: The wet membrane applies as a smooth, visible layer so you can easily spot and fill any missed patches before it cures.
- Ensure a flawless application by properly preparing the surface before applying SEMCO Liquid Membrane waterproofing. For best results, follow our simple step-by-step guide below and experience the ultimate waterproofing for your surfaces.
- Once the surface is fully prepped and dry, apply the SEMCO Liquid Membrane using a 1/2" woven nap roller. This ensures an even, seamless coat for maximum waterproofing protection.
- For optimal performance, apply at least 2 coats, each 15 mils thick. For submerged applications, such as swimming pools or fountains, a minimum of 3 coats is recommended to ensure superior waterproofing and durability.
- Scroll down for a detailed step-by-step application guide, or feel free to reach out to our friendly customer service team for any assistance you may need. We're here to help!
Work out what you need
How much will your project take?
Tell us the project and the area. We'll size the membrane and add the right prep cleaners for your surface — no guessing which ones you need.
Not sure? Length × width for a floor. For walls, add each wall's length × height.
▦
Pick your project and enter the area — we'll work out exactly what you need.
Kit total$0.00
Cleaners are only needed if the surface has contaminants — untick anything you already have.
The numbers
Every claim here has a test behind it.
1,300%
Elongation · ASTM D412
Stretches thirteen times its length before failing — which is what lets it bridge a crack a rigid coating would split across.
234 PSI
Adhesion at 4 weeks
173 PSI at 7 days, building to 234 at four weeks (ANSI 118.10). Pressure pushing outward has to beat that bond to lift the film.
0.135
Perm-in · ASTM E96
Blocks liquid water while still passing vapor, so the surface isn't sealed into a moisture trap.
14 g/L
VOC content
Water-based and low odor — safe for an enclosed basement or crawl space with one small window.
EN 14891
DIN EN 14891:2017-05
Certified as a primary waterproofing layer under the German and EU standard for liquid-applied products.
up to 250 sq ft
COVERAGE @ 2 coats
Coverage may vary depending on porosity of your surface, but still beats most of the competition.
SEMCO Liquid Membrane Colors
Choose from multiple UV-stable colors designed to hold their look over time, so your waterproofing blends right in.
Due to Computer Monitors, Colors may not be exactly as shown. For applications which are fully submerged in water or in contact with water over an extended period of time, we do recommend adding EXTRA PIGMENT and not using semi-clear.
PRODUCT INFO
SEMCO Liquid Membrane™ is a ready-to-use, hybrid elastomer waterproofing membrane that combines three functions in one product: COAT · COLOR · SEAL. It forms a continuous, flexible rubber-like film that bonds directly to almost any surface — stopping water in its tracks.
Unlike traditional rubber or silicone-based waterproofing, SEMCO Liquid Membrane uses a proprietary elastomer blend that delivers exceptional adhesion (400+ PSI), extraordinary flexibility (1,300% elongation), and rapid drying — all while remaining 100% VOC-free and non-toxic, making it safe for pools, fish ponds, and food-bearing planters.
It’s designed to be DIY-friendly without sacrificing professional performance. Whether you’re waterproofing a basement from the inside, coating a flat roof, lining a decorative fountain, or restoring an aging deck, SEMCO Liquid Membrane adapts to your project.
- Type – Single-component, latex-crosslink hybrid waterproofing and anti-fracture membrane
- Elongation – Up to 1300% stretch (ASTM D412), providing long-term crack suppression
- Adhesion/shear strength – 173 PSI (7-day), 234 PSI (4-week), 132 PSI after 7-day water immersion (ANSI 118.10)
- Tensile strength – 390 PSI maximum stress (ISO 37 / ASTM D412)
- Coverage – 100–250 sq ft per gallon (2 coats), depending on substrate porosity
- Application – Roll (1/2" nap roller), brush, or airless spray (min. 2,500 PSI, tip size 21); minimum 2 coats, 30 mil total thickness
- Application temperature – 50°F to 90°F
- Dry time – Recoat in 25–45 minutes at 72°F; ready for finish in as little as 2 hours
- Cure time – 5–10 days depending on temperature (faster in heat, slower in cold)
- VOC content – 14 g/L (0.20%) — low VOC, odorless
- Substrates – Concrete, plywood, stone, interior/exterior cladding
- Testing – Passes ANSI 118.10 breaking strength and dimensional stability standards
- Shelf life – 2 years in controlled ambient storage (60–72°F)
SEMCO Liquid Membrane™ is trusted by professional waterproofing contractors, builders, pool service companies, property managers, and facilities teams across the country. We offer dedicated support and volume pricing for businesses.
Benefits List
- Volume discount pricing on 5-gallon pails and case ordersPriority technical support from application experts
- Fast reorder history and account management
- Co-branded project documentation and spec sheets available
- Suitable for: waterproofing contractors, pool builders, property maintenance, HOAs, facility managers
CTAs
- Enquire About Pro Pricing → CONTACT US
- Call Us: 1-833-211-2297
Step by step
FOR STEP-BY-STEP GUIDES SPECIFIC TO YOUR PROJECT
-
1
Prepare your surface and Gather your materials
For concrete or brick surfaces we recommend our Preparation D in order to remove any mineral deposits or efflorescence from the surface. For this you will need the following cleaners : Nu-Lift Cleaner and Stone Soap If there is constant dampness in the substrate, use Natural Shield first to mitigate the moisture. Let it fully cure first prior to applying SEMCO Liquid Membrane™ . Ensure your surfaces are fully cleaned and dried. Gather all the products and tools needed for your project.If you need assistance with which cleaners are needed for the Prep, feel free to use our live chat or call us! -
2
Fabric Reinforcement
If you have any cracks wider than 1/4", a Fabric Reinforcement is needed to bridge the crack. Any cracks smaller than 1/4" width, SEMCO Liquid Membrane™ can be applied over it. To apply the Fabric Reinforcement, apply a generous coat of SEMCO Liquid Membrane™ over the crack. Put the Fabric Reinforcement on a press it flat, after 10-15 min apply another coat of SEMCO Liquid Membrane™ over the Fabric Reinforcement to encapsulate it. Let it dry to the touch before applying SEMCO Liquid Membrane™ over the entire surface. -
3
Masking
Mask off areas that are not receiving any coating. Remove masking tape before material has fully cured. -
4
APPLYING COAT
Use a 1/2" nap roller. Allow any pre-treated areas to fully dry. Apply a thin coat (0.015 inch per coat) of SEMCO Liquid Membrane™ with brush or roller over substrate including pre-treated areas. Once you can walk on the surface and not get any residue on your shoe or feet or cannot leave a fingerprint impression it is ready to re-coat. Apply another thin coat of SEMCO Liquid Membrane™ in an alternate direction over the first coat of SEMCO Liquid Membrane™. Let topcoat dry to the touch, approximately 1–2 hours at 70 °F (21 °C) and 50% RH. When last coat has dried to the touch, inspect final surface for pinholes, voids, thin spots or other defects.SEMCO Liquid Membrane™ will dry to a lighter color when it’s dry to touch. Use additional SEMCO Liquid Membrane™ to seal the defects. Required total thickness is 0.03 - 0.04 inches for non submerged applications. -
5
Curing Time
Curing time depends on temperature, humidity and airflow, however typically initial cure is within 6 - 7 days as per specific product recommendations. -
6
Additional Information
For clean up use warm water to clean brush or roller right after use. For optimal bonding we highly recommend preparing the surface as mentioned above for best results. Stir up the product well before use in order to mix up the color pigments. Avoid application in direct sun light in the afternoon or temperatures of over 85F as it might cause the product to dry too fast before it can adhere to the substrate Suitable for light foot traffic.For heavy foot traffic or vehicle traffic, we recommend using SEMCO Titan Shield Gloss. It can not be applied to wet substrates or substrates still containing moisture, else it will not cure correctly and stay tacky. Max. rest moisture in substrate can be up to 3%. If you are unsure about the moisture content, have it measured prior to application. Ensuring that a surface is pH balanced before applying a coating is crucial for optimal adhesion and performance. Therefore we recommend our preparation methods for optimal adhesion. We do not recommend acid washes. For applications where the product is fully submerged, 3 coats @20mil each is required and allow a curing time of minimum 6-7 days.Also application must coat entire surface to above the waterline. Please note that the SEMCO Liquid Membrane may experience slight color variations or discoloration when exposed to water for extended periods of time. Application on non porous surfaces such as metal or fiberglass : Apply thin coats as this will allow for the product to cure faster. Cure times are displayed in our curing chart. However if coats have been applied too thick, the surface might feel tacky. This is a sign of trapped moisture. If you have left over product, apply a very thin coat over the entire surface. The surface needs to be fully cured and hard before permitting water. For applications where SEMCO Liquid Membrane™ is applied on pool plaster, extended curing times might occur as plaster holds more moisture which needs to breath out first. A slight color change may occur when being in contact with water when the product has not fully cured yet. This however will not affect the performance of the SEMCO Liquid Membrane™. It is always advisable to apply a small test patch in an inconspicuous are to ensure adequate adhesion prior to full application. If you have multiple containers of SEMCO Liquid Membrane™, we highly recommend to either mix them together or use one container for the last layer to get color consistency.
-
1
Preparation
Sand the wood surface with a 60 grit sandpaper. Take off any loose coating and ensure surface is free of any debrisAs wood often absorbs water, avoid pressure washing wood prior to the application. -
2
Masking
Mask off areas that are not receiving any coating. Remove masking tape before material has fully cured. -
3
APPLYING COAT
Use a 1/2" nap roller. Allow any pre-treated areas to fully dry. Apply a thin coat (0.015 inch per coat) of SEMCO Liquid Membrane™ with brush or roller over substrate including pre-treated areas. Once you can walk on the surface and not get any residue on your shoe or feet or cannot leave a fingerprint impression it is ready to re-coat. Apply another thin coat of SEMCO Liquid Membrane™ in an alternate direction over the first coat of SEMCO Liquid Membrane™. Let topcoat dry to the touch, approximately 1–2 hours at 70 °F (21 °C) and 50% RH. When last coat has dried to the touch, inspect final surface for pinholes, voids, thin spots or other defects.SEMCO Liquid Membrane™ will dry to a lighter color when it’s dry to touch. Use additional SEMCO Liquid Membrane™ to seal the defects. Required total thickness is 0.03 - 0.04 inches for non submerged applications. -
4
Curing Time
Curing time depends on temperature, humidity and airflow, however typically initial cure is within 6 - 7 days as per specific product recommendations. -
5
Additional Information
For clean up use warm water to clean brush or roller right after use. For optimal bonding we highly recommend preparing the surface as mentioned above for best results. Stir up the product well before use in order to mix up the color pigments. Avoid application in direct sun light in the afternoon or temperatures of over 85F as it might cause the product to dry too fast before it can adhere to the substrate Suitable for light foot traffic.For heavy foot traffic or vehicle traffic, we recommend using SEMCO Titan Shield Gloss. It can not be applied to wet substrates or substrates still containing moisture, else it will not cure correctly and stay tacky. Max. rest moisture in substrate can be up to 3%. If you are unsure about the moisture content, have it measured prior to application. For applications where the product is fully submerged, 3 coats @20mil each is required and allow a curing time of minimum 6-7 days.Also application must coat entire surface to above the waterline. Please note that the SEMCO Liquid Membrane may experience slight color variations or discoloration when exposed to water for extended periods of time. Application on non porous surfaces such as metal or fiberglass : Apply thin coats as this will allow for the product to cure faster. Cure times are displayed in our curing chart. However if coats have been applied too thick, the surface might feel tacky. This is a sign of trapped moisture. If you have left over product, apply a very thin coat over the entire surface. The surface needs to be fully cured and hard before permitting water. For applications where SEMCO Liquid Membrane™ is applied on pool plaster, extended curing times might occur as plaster holds more moisture which needs to breath out first. A slight color change may occur when being in contact with water when the product has not fully cured yet. This however will not affect the performance of the SEMCO Liquid Membrane™. It is always advisable to apply a small test patch in an inconspicuous are to ensure adequate adhesion prior to full application. If you have multiple containers of SEMCO Liquid Membrane™, we highly recommend to either mix them together or use one container for the last layer to get color consistency.
-
1
Prepare your space and Gather your materials
For concrete or gunnite surfaces we recommend our Preparation D in order to remove any mineral deposits or efflorescence from the surface. For this you will need the following cleaners : Nu-Lift Cleaner and Stone Soap For fiberglass surfaces it is required to sand the entire surface first with a 60 grit. Afterwards use Preparation B.For this you will need the following cleaners : Power Cleaner and Stone Soap If there is constant dampness in the substrate, use Natural Shield first to mitigate the moisture. Let it fully cure first prior to applying SEMCO Liquid Membrane™ . Ensure your surfaces are fully cleaned and dried. Gather all the products and tools needed for your project.If you need assistance with which cleaners are needed for the Prep, feel free to use our live chat or call us! -
2
Fabric Reinforcement
If you have any cracks wider than 1/4", a Fabric Reinforcement is needed to bridge the crack. Any cracks smaller than 1/4" width, SEMCO Liquid Membrane™ can be applied over it. -
3
Masking
Mask off areas that are not receiving any coating. Remove masking tape before material has fully cured. -
4
APPLYING COAT
Use a 1/2" nap roller. Allow any pre-treated areas to fully dry. Apply a thin coat (0.015 inch per coat) of SEMCO Liquid Membrane™ with brush or roller over substrate including pre-treated areas. Once you can walk on the surface and not get any residue on your shoe or feet or cannot leave a fingerprint impression it is ready to re-coat. Apply another thin coat of SEMCO Liquid Membrane™ in an alternate direction over the first coat of SEMCO Liquid Membrane™. Let topcoat dry to the touch, approximately 1–2 hours at 70 °F (21 °C) and 50% RH. When last coat has dried to the touch, inspect final surface for pinholes, voids, thin spots or other defects.SEMCO Liquid Membrane™ will dry to a lighter color when it’s dry to touch. Use additional SEMCO Liquid Membrane™ to seal the defects. Required total thickness is 0.03 - 0.04 inches for non submerged applications. For submerged applications a min. required total thickness of 60 mil is required. Allow 6-7 days for full cure to filling with water.For submerged applications we recommend adding Extra Pigment for a more solid overall finish -
5
Curing Time
Curing time depends on temperature, humidity and airflow, however typically initial cure is within 6 - 7 days as per specific product recommendations. -
6
Additional Information
For clean up use warm water to clean brush or roller right after use. For optimal bonding we highly recommend preparing the surface as mentioned above for best results. Stir up the product well before use in order to mix up the color pigments. Avoid application in direct sun light in the afternoon or temperatures of over 85F as it might cause the product to dry too fast before it can adhere to the substrate It can not be applied to wet substrates or substrates still containing moisture, else it will not cure correctly and stay tacky. Max. rest moisture in substrate can be up to 3%. If you are unsure about the moisture content, have it measured prior to application. Ensuring that a surface is pH balanced before applying a coating is crucial for optimal adhesion and performance. Therefore we recommend our preparation methods for optimal adhesion. We do not recommend acid washes. For applications where the product is fully submerged, 3 coats @20mil each is required and allow a curing time of minimum 6-7 days.Also application must coat entire surface to above the waterline. Please note that the SEMCO Liquid Membrane may experience slight color variations or discoloration when exposed to water for extended periods of time. Application on non porous surfaces such as metal or fiberglass : Apply thin coats as this will allow for the product to cure faster. Cure times are displayed in our curing chart. However if coats have been applied too thick, the surface might feel tacky. This is a sign of trapped moisture. If you have left over product, apply a very thin coat over the entire surface. The surface needs to be fully cured and hard before permitting water. For applications where SEMCO Liquid Membrane™ is applied on pool plaster, extended curing times might occur as plaster holds more moisture which needs to breath out first. A slight color change may occur when being in contact with water when the product has not fully cured yet. This however will not affect the performance of the SEMCO Liquid Membrane™. It is always advisable to apply a small test patch in an inconspicuous are to ensure adequate adhesion prior to full application. If you have multiple containers of SEMCO Liquid Membrane™, we highly recommend to either mix them together or use one container for the last layer to get color consistency.
-
1
Prepare your space and Gather your materials
For bare concrete or water based coatings we recommend our Preparation D in order to remove any mineral deposits or efflorescence from the surface. For this you will need the following cleaners : Nu-Lift Cleaner and Stone Soap For asphalt, rubber and EPDM surfaces we recommend Preparation B.For this you will need the following cleaners : Power Cleaner and Stone Soap Ensure your surfaces are fully cleaned and dried. If you have any rust on your surface, use a water based rust primer first.If you need assistance with which cleaners are needed for the Prep, feel free to use our live chat or call us! -
2
Masking
Mask off areas that are not receiving any coating. Remove masking tape before material has fully cured. -
3
Fabric Reinforcement
We strongly recommend using the Fabric Reinforcement on all the joints.Apply a generous coat of SEMCO Liquid Membrane™ on the joints. 4" on each side of the joint and while product is still wet, put the Fabric Reinforcement over the joint and press it flat. Once Fabric Reinforcement is on, apply another coat of SEMCO Liquid Membrane™ across the Fabric Reinforcement to encapsulate it. Let it dry completely before resuming to next step. -
4
APPLYING COAT
Use a 1/2" nap roller. Allow any pre-treated areas to fully dry. Apply a thin coat (0.015 inch per coat) of SEMCO Liquid Membrane™ with brush or roller over substrate including pre-treated areas. Once you can walk on the surface and not get any residue on your shoe or feet or cannot leave a fingerprint impression it is ready to re-coat. Apply another thin coat of SEMCO Liquid Membrane™ in an alternate direction over the first coat of SEMCO Liquid Membrane™. Let topcoat dry to the touch, approximately 1–2 hours at 70 °F (21 °C) and 50% RH. When last coat has dried to the touch, inspect final surface for pinholes, voids, thin spots or other defects.SEMCO Liquid Membrane™ will dry to a lighter color when it’s dry to touch. Use additional SEMCO Liquid Membrane™ to seal the defects. Required total thickness is 0.03 - 0.04 inches for non submerged applications. -
5
Curing Time
Curing time depends on temperature, humidity and airflow, however typically initial cure is within 6 - 7 days as per specific product recommendations. Avoid contact with water during the curing period. -
6
Additional Information
For clean up use warm water to clean brush or roller right after use. For optimal bonding we highly recommend preparing the surface as mentioned above for best results. Stir up the product well before use in order to mix up the color pigments. Avoid application in direct sun light in the afternoon or temperatures of over 85F as it might cause the product to dry too fast before it can adhere to the substrate Please note that the SEMCO Liquid Membrane may experience slight color variations or discoloration when exposed to water for extended periods of time. It can not be applied to wet substrates or substrates still containing moisture, else it will not cure correctly and stay tacky. Max. rest moisture in substrate can be up to 3%. If you are unsure about the moisture content, have it measured prior to application. Ensuring that a surface is pH balanced before applying a coating is crucial for optimal adhesion and performance. Therefore we recommend our preparation methods for optimal adhesion. We do not recommend acid washes. Application on non porous surfaces such as metal or fiberglass : Apply thin coats as this will allow for the product to cure faster. Cure times are displayed in our curing chart. However if coats have been applied too thick, the surface might feel tacky. This is a sign of trapped moisture. If you have left over product, apply a very thin coat over the entire surface. The surface needs to be fully cured and hard before being fully submerged. It is always advisable to apply a small test patch in an inconspicuous are to ensure adequate adhesion prior to full application. If you have multiple containers of SEMCO Liquid Membrane™, we highly recommend to either mix them together or use one container for the last layer to get color consistency.
-
1
Prepare your space and Gather your materials
For bare concrete or water based coatings we recommend our Preparation D in order to remove any mineral deposits or efflorescence from the surface. For this you will need the following cleaners : Nu-Lift Cleaner and Stone Soap For concrete surfaces with oil stains or grease we recommend Preparation B.For this you will need the following cleaners : Power Cleaner and Stone Soap Ensure your surfaces are fully cleaned and dried. Gather all the products and tools needed for your project.If you need assistance with which cleaners are needed for the Prep, feel free to use our live chat or call us! -
2
Fabric Reinforcement
If you have any cracks wider than 1/4", a Fabric Reinforcement is needed to bridge the crack. Any cracks smaller than 1/4" width, SEMCO Liquid Membrane™ can be applied over it. -
3
Masking
Mask off areas that are not receiving any coating. Remove masking tape before material has fully cured. -
4
APPLYING COAT
Use a 1/2" nap roller. Allow any pre-treated areas to fully dry. Apply a thin coat (0.015 inch per coat) of SEMCO Liquid Membrane™ with brush or roller over substrate including pre-treated areas. Once you can walk on the surface and not get any residue on your shoe or feet or cannot leave a fingerprint impression it is ready to re-coat. Apply another thin coat of SEMCO Liquid Membrane™ in an alternate direction over the first coat of SEMCO Liquid Membrane™. Let topcoat dry to the touch, approximately 1–2 hours at 70 °F (21 °C) and 50% RH. When last coat has dried to the touch, inspect final surface for pinholes, voids, thin spots or other defects.SEMCO Liquid Membrane™ will dry to a lighter color when it’s dry to touch. Use additional SEMCO Liquid Membrane™ to seal the defects. Required total thickness is 0.03 - 0.04 inches for non submerged applications. -
5
Curing Time
Curing time depends on temperature, humidity and airflow, however typically initial cure is within 6 - 7 days as per specific product recommendations. Avoid contact with water during the curing period. -
6
Additional Information
It is not recommended to apply any of our products to green concrete. Fresh concrete should be allowed to cure for a minimum of 28 days. For clean up use warm water to clean brush or roller right after use. For optimal bonding we highly recommend preparing the surface as mentioned above for best results. Stir up the product well before use in order to mix up the color pigments. Avoid application in direct sun light in the afternoon or temperatures of over 85F as it might cause the product to dry too fast before it can adhere to the substrate Suitable for light foot traffic.For heavy foot traffic or vehicle traffic, we recommend using SEMCO Titan Shield. It can not be applied to wet substrates or substrates still containing moisture, else it will not cure correctly and stay tacky. Max. rest moisture in substrate can be up to 3%. If you are unsure about the moisture content, have it measured prior to application. Ensuring that a surface is pH balanced before applying a coating is crucial for optimal adhesion and performance. Therefore we recommend our preparation methods for optimal adhesion. We do not recommend acid washes. For applications where the product is fully submerged, 3 coats @20mil each is required and allow a curing time of minimum 6-7 days.Also application must coat entire surface to above the waterline. Application on non porous surfaces such as metal or fiberglass : Apply thin coats as this will allow for the product to cure faster. Cure times are displayed in our curing chart. However if coats have been applied too thick, the surface might feel tacky. This is a sign of trapped moisture. If you have left over product, apply a very thin coat over the entire surface. The surface needs to be fully cured and hard before permitting water. For applications where SEMCO Liquid Membrane™ is applied on pool plaster, extended curing times might occur as plaster holds more moisture which needs to breath out first. A slight color change may occur when being in contact with water when the product has not fully cured yet. This however will not affect the performance of the SEMCO Liquid Membrane™. It is always advisable to apply a small test patch in an inconspicuous are to ensure adequate adhesion prior to full application. If you have multiple containers of SEMCO Liquid Membrane™, we highly recommend to either mix them together or use one container for the last layer to get color consistency.
Download as PDF
-
1
Prepare your space and Gather your materials
Use SEMCO Nu-Lift Cleaner and Stone Soap to remove any mineral deposits or efflorescence Use SEMCO Power Cleaner and SEMCO Nu-Lift Cleaner if there is any oil or grease Ensure your surfaces are fully cleaned and dried. Gather all the products and tools needed for your project.If you need assistance with which cleaners are needed for the Prep, feel free to use our live chat or call us! -
2
Masking
Mask off areas that are not receiving any coating. Remove masking tape before material has fully cured. -
3
Titan Shield Application
Use a 1/2" woven nap roller to apply Titan Shield Gloss. Apply the first coat and allow the sealer to dry for at least 30 - 45 minutes, up to 2 hrs in high humidity conditions, or until surface is completely dry. Repeat the application to a minimum of 3 coats or a total thickness of 15-20 mil. Additional coats may be required depending on the porosity of your substrate. For larger areas Titan Shield Gloss can be applied with an airless sprayer with tip size 17. Adjust the sprayer to the lowest possible air setting and try out on a test area first.Apply each coat in alternate directions to the last coat to ensure even coverage. -
4
Additional Information
For clean up use warm water to clean brush or roller right after use. For optimal bonding we highly recommend preparing the surface as mentioned above for best results. Stir up the product well before use in order to mix up the color pigments. Avoid application in direct sun light in the afternoon or temperatures of over 85F as it might cause the product to dry too fast before it can adhere to the substrate It can not be applied to wet substrates or substrates still containing moisture, else it will not cure correctly and stay tacky. Max. rest moisture in substrate can be up to 3%. If you are unsure about the moisture content, have it measured prior to application. Ensuring that a surface is pH balanced before applying a coating is crucial for optimal adhesion and performance. Therefore we recommend our preparation methods for optimal adhesion. We do not recommend acid washes. It is always advisable to apply a small test patch in an inconspicuous are to ensure adequate adhesion prior to full application.
-
1
Prepare your space and Gather your materials
Use SEMCO Nu-Lift Cleaner and Stone Soap to remove any mineral deposits or efflorescence Use SEMCO Power Cleaner and SEMCO Nu-Lift Cleaner if there is any oil or grease Ensure your surfaces are fully cleaned and dried. Gather all the products and tools needed for your project.If you need assistance with which cleaners are needed for the Prep, feel free to use our live chat or call us! -
2
Masking
Mask off areas that are not receiving any coating. Remove masking tape before material has fully cured. -
3
Titan Shield Application
Use a 1/2" woven nap roller to apply Titan Shield Gloss. Apply the first coat and allow the sealer to dry for at least 30 - 45 minutes, up to 2 hrs in high humidity conditions, or until surface is completely dry. Repeat the application to a minimum of 3 coats or a total thickness of 15-20 mil. Additional coats may be required depending on the porosity of your substrate. For larger areas Titan Shield Gloss can be applied with an airless sprayer with tip size 17. Adjust the sprayer to the lowest possible air setting and try out on a test area first.Apply each coat in alternate directions to the last coat to ensure even coverage. -
4
Additional Information
For clean up use warm water to clean brush or roller right after use. For optimal bonding we highly recommend preparing the surface as mentioned above for best results. Stir up the product well before use in order to mix up the color pigments. Avoid application in direct sun light in the afternoon or temperatures of over 85F as it might cause the product to dry too fast before it can adhere to the substrate Ensuring that a surface is pH balanced before applying a coating is crucial for optimal adhesion and performance. Therefore we recommend our preparation methods for optimal adhesion. We do not recommend acid washes. If SEMCO Liquid Membrane has been applied prior, let it cure for a minimum of 4 days prior to applying Titan Shield.
Download as PDF
-
1
Prepare your space and Gather your materials
Use SEMCO Nu-Lift Cleaner and Stone Soap to remove any mineral deposits or efflorescence Use SEMCO Power Cleaner and SEMCO Nu-Lift Cleaner if there is any oil or grease Ensure your surfaces are fully cleaned and dried. Gather all the products and tools needed for your project.If you need assistance with which cleaners are needed for the Prep, feel free to use our live chat or call us! -
2
Masking
Mask off areas that are not receiving any coating. Remove masking tape before material has fully cured. -
3
Titan Shield Application
Use a 1/2" woven nap roller to apply Titan Shield Gloss. Apply the first coat and allow the sealer to dry for at least 30 - 45 minutes, up to 2 hrs in high humidity conditions, or until surface is completely dry. Repeat the application to a minimum of 3 coats or a total thickness of 15-20 mil. Additional coats may be required depending on the porosity of your substrate. For larger areas Titan Shield Gloss can be applied with an airless sprayer with tip size 17. Adjust the sprayer to the lowest possible air setting and try out on a test area first.Apply each coat in alternate directions to the last coat to ensure even coverage. -
4
Additional Information
For clean up use warm water to clean brush or roller right after use. For optimal bonding we highly recommend preparing the surface as mentioned above for best results. Stir up the product well before use in order to mix up the color pigments. Avoid application in direct sun light in the afternoon or temperatures of over 85F as it might cause the product to dry too fast before it can adhere to the substrate It can not be applied to wet substrates or substrates still containing moisture, else it will not cure correctly and stay tacky. Max. rest moisture in substrate can be up to 3%. If you are unsure about the moisture content, have it measured prior to application. Ensuring that a surface is pH balanced before applying a coating is crucial for optimal adhesion and performance. Therefore we recommend our preparation methods for optimal adhesion. We do not recommend acid washes. If SEMCO Liquid Membrane has been applied prior, let it cure for a minimum of 4 days prior to applying Titan Shield. Cure times are displayed in our curing chart.
-
1
Prepare your space and Gather your materials
Use Nu-Lift Cleaner and Stone Soap to remove any mineral deposits or efflorescence Ensure your surfaces are fully cleaned and dried. Gather all the products and tools needed for your project.If you need assistance with which cleaners are needed for the Prep, feel free to use our live chat or call us! -
2
Masking
Mask off areas that are not receiving any coating. Remove masking tape before material has fully cured. -
3
Natural Shield Application
Use a 1/4" woven nap roller to apply Natural Shield. Apply the first coat and do not allow sealer to completely dry before applying second and third coats.Repeat the application to a minimum of 3 coats. Additional coats may be required depending on the porosity of your substrate. For larger areas Natural Shield can be applied with an airless sprayer with tip size 17. Adjust the sprayer to the lowest possible air setting and try out on a test area first. -
4
Additional Information
For clean up use warm water to clean brush or roller right after use. No existing coating can be on the surface else Natural Shield cannot penetrate into the substrate. Ensuring that a surface is pH balanced before applying a coating is crucial for optimal adhesion and performance. Therefore we recommend our preparation methods for optimal adhesion. We do not recommend acid washes. Avoid application in direct sun light in the afternoon or temperatures of over 85F as it might cause the product to dry too fast before it can adhere to the substrate
-
1
Prepare your space and Gather your materials
Use Nu-Lift Cleaner and Stone Soap to remove any mineral deposits or efflorescence Use Power Cleaner and Nu-Lift Cleaner if there is any oil or grease Ensure your surfaces are fully cleaned and dried. Gather all the products and tools needed for your project.If you need assistance with which cleaners are needed for the Prep, feel free to use our live chat or call us! -
2
Masking
Mask off areas that are not receiving any coating. Remove masking tape before material has fully cured. -
3
Natural Shield Application
Use a 1/4" woven nap roller to apply Natural Shield. Apply the first coat and do not allow sealer to completely dry before applying second and third coats.Repeat the application to a minimum of 3 coats. Additional coats may be required depending on the porosity of your substrate. For larger areas Natural Shield can be applied with an airless sprayer with tip size 17. Adjust the sprayer to the lowest possible air setting and try out on a test area first. -
4
Additional Information
For clean up use warm water to clean brush or roller right after use. For optimal bonding we highly recommend preparing the surface as mentioned above for best results. No existing coating can be on the surface else Natural Shield cannot penetrate into the substrate. Ensuring that a surface is pH balanced before applying a coating is crucial for optimal adhesion and performance. Therefore we recommend our preparation methods for optimal adhesion. We do not recommend acid washes. Avoid application in direct sun light in the afternoon or temperatures of over 85F as it might cause the product to dry too fast before it can adhere to the substrate
-
1
Prepare your space and Gather your materials
Ensure your surface is free of any debris. Gather all the products and tools needed for your project.If you need assistance with which cleaners are needed for the Prep, feel free to use our live chat or call us! -
2
WASHING PROCESS
Mix 1 part Stone Soap with 4 parts of water Slightly dampen the surface with water. This will prevent cleaners to penetrate deep into the pores of the substrate Apply the Stone Soap mixture lightly with a pump sprayer and allow to sit for 2-3 minutes Scrub the surface using a scrub machine or nylon brush Rinse the surface off well and ensure no residue is left -
3
Additional Information
Always let surface completely dry prior to application of sealers Do not use Muriatic Acid to prep surfaces as residue may lead to adhesion problems Ensuring that a surface is pH balanced before applying a coating is crucial for optimal adhesion and performance. Therefore we recommend our preparation methods for optimal adhesion. We do not recommend acid washes.
-
1
Prepare your space and Gather your materials
Ensure your surface is free of any debris. Gather all the products and tools needed for your project.If you need assistance with which cleaners are needed for the Prep, feel free to use our live chat or call us! -
2
WASHING PROCESS
Mix 1 part Stone Soap with 4 parts of water Mix 1 part POWER CLEANER with 4 parts of water Slightly dampen the surface with water. This will prevent cleaners to penetrate deep into the pores of the substrate Apply the POWER CLEANER mixture lightly with a pump sprayer and allow to sit for 2-3 minutes Scrub the surface using a scrub machine or nylon brush Rinse the surface off well and ensure no residue is left Repeat all steps in this task with Stone Soap to clean chemical residue -
3
Additional Information
Always let surface completely dry prior to application of sealers Do not use Muriatic Acid to prep surfaces as residue may lead to adhesion problems
-
1
Prepare your space and Gather your materials
Ensure your surface is free of any debris. Gather all the products and tools needed for your project.If you need assistance with which cleaners are needed for the Prep, feel free to use our live chat or call us! -
2
WASHING PROCESS
Mix 1 part POWER CLEANER with 4 parts of water for POWER CLEANER SOLUTION 1 Mix 1 part POWER CLEANER with 9 parts of water for POWER CLEANER SOLUTION 2 Mix 1 part Nu-Lift CLEANER with 1 part of water Slightly dampen the surface with water. This will prevent cleaners to penetrate deep into the pores of the substrate Apply the POWER CLEANER SOLUTION 1 mixture lightly with a pump sprayer and allow to sit for 2-3 minutes Scrub the surface using a scrub machine or nylon brush Rinse the surface off well and ensure no residue is left Apply Nu-Lift Cleaner solution and repeat all steps. Apply POWER CLEANER SOLUTION 2 and repeat steps for the procedure -
3
Additional Information
Always let surface completely dry prior to application of sealers Do not use Muriatic Acid to prep surfaces as residue may lead to adhesion problems
-
1
Prepare your space and Gather your materials
Ensure your surface is free of any debris. Gather all the products and tools needed for your project.If you need assistance with which cleaners are needed for the Prep, feel free to use our live chat or call us! -
2
WASHING PROCESS
Slightly wet surface with water prior to applying Nu-Lift Cleaner Apply undiluted Nu-Lift Cleaner on to the surface. and allow to sit for 2-3 minutes Scrub the surface using a scrub machine or nylon brush Rinse the surface off well and ensure no residue is left Mix 1 part Stone Soap with 4 parts of water and allow to sit for 2-3 minutes Scrub the surface using a scrub machine or nylon brush Rinse the surface off well and ensure no residue is left -
3
Additional Information
Always let surface completely dry prior to application of sealers Do not use Muriatic Acid to prep surfaces as residue may lead to adhesion problems
-
1
Prepare your surface and Gather your materials
Use SEMCO Nu-Lift Cleaner and Stone Soap to remove any mineral deposits or efflorescence Use SEMCO Power Cleaner and SEMCO Nu-Lift Cleaner if there is any oil or grease Ensure your surfaces are fully cleaned and dried. Gather all the products and tools needed for your project.If you need assistance with which cleaners are needed for the Prep, feel free to use our live chat or call us! -
2
Masking
Mask off areas that are not receiving any coating. Remove masking tape before material has fully cured. -
3
PRESTAIN APPLICATION
Apply PreStain Color with sponge, brush, foam roller or airless sprayer with tip size 17 Apply thin and even coats on to concrete. Do not overload application tool with product and avoid leaving puddles on the surface. Repeat application if more color saturation is required. Let it dry for 12 - 24 hours depending on temperature before applying sealer for added protection. -
4
Additional Information
Must apply between 40-90˚F (4.5-32˚C). Do not use if rain is expected within 24 hours. The concrete surface must be completely dry before application. Work in small sections lightly saturating the surface and immediately back-brush or use pad applicator to eliminate puddling, remove excess and evenly distribute PreStain. Over application of stain will lead to surface failure including peeling and cracking. Stir up the product well before use in order to mix up the color pigments. For areas with furniture or heavy foot traffic we recommend using Titan Shield Sealer to protect the surface.
-
1
Prepare your Non-Skid Additive
Lightly shake the Non-Skid container prior to mixing Empty Non-Skid container into Titan Shield Gloss sealer and mix up well.If you need any assistance, feel free to use our live chat or call us! -
2
Titan Shield Application
Use a 1/2" woven nap roller to apply Titan Shield Gloss. Apply the first coat and allow the sealer to dry for at least 30 - 45 minutes, up to 2 hrs in high humidity conditions, or until surface is completely dry. Repeat the application to a minimum of 3 coats or a total thickness of 15-20 mil. Additional coats may be required depending on the porosity of your substrate. For larger areas Titan Shield Gloss can be applied with an airless sprayer with tip size 17. Adjust the sprayer to the lowest possible air setting and try out on a test area first.Apply each coat in alternate directions to the last coat to ensure even coverage. -
3
Additional Information
If Non-Skid Additive is used with clear Titan Shield, spray application is recommended For roller application Titan Shield with color is recommended Avoid application in direct sun light in the afternoon or temperatures of over 85F as it might cause the product to dry too fast before it can adhere to the substrate It can not be applied to wet substrates or substrates still containing moisture, else it will not cure correctly and stay tacky. Max. rest moisture in substrate can be up to 3%. If you are unsure about the moisture content, have it measured prior to application. Cure times are displayed in our curing chart.
-
1
Easy Application
Ensure your surface is free of any debris. Gather all the products and tools needed for your project. If there are any existing wax coatings, please remove prior to application Use household microfiber mop for application Pour small amount onto clean surface apply thin coat with microfiber mop. Apply small sections at a time. On wood floors or laminate flooring, apply in the directions of the individual planks.If you need assistance with which cleaners are needed for the Prep, feel free to use our live chat or call us! -
2
Additional Information
If you miss a spot, wait until floor is dry and pour Crystal Coat onto clean microfiber cloth and touch up spot. Only use when temperatures are above 50F. Allow to dry for 45 minutes before walking on the floor. Only place heavy objects once surface has cured for 24 hours. A 2nd coat can be applied if desired. Apply only once floor is dry enough to walk on without any imprints.
-
1
Prepare your surface and Gather your materials
For Cement / Hardiebacker board applications, ensure that boards are properly installed and sound. -
2
Fabric Reinforcement
For any joints between the boards and the joint between floor and wall, we recommend using the Fabric Reinforcement. To apply the Fabric Reinforcement, apply a generous coat of SEMCO Liquid Membrane™ over the crack. Put the Fabric Reinforcement on a press it flat, after 10-15 min apply another coat of SEMCO Liquid Membrane™ over the Fabric Reinforcement to encapsulate it. Let it dry to the touch before applying SEMCO Liquid Membrane™ over the entire surface. -
3
Masking
Mask off areas that are not receiving any coating. Remove masking tape before material has fully cured. -
4
APPLYING COAT
Use a 1/2" nap roller. Allow any pre-treated areas to fully dry. Apply a thin coat (0.015 inch per coat) of SEMCO Liquid Membrane™ with brush or roller over substrate including pre-treated areas. Once you can walk on the surface and not get any residue on your shoe or feet or cannot leave a fingerprint impression it is ready to re-coat. Apply another thin coat of SEMCO Liquid Membrane™ in an alternate direction over the first coat of SEMCO Liquid Membrane™. Let topcoat dry to the touch, approximately 1–2 hours at 70 °F (21 °C) and 50% RH. When last coat has dried to the touch, inspect final surface for pinholes, voids, thin spots or other defects.SEMCO Liquid Membrane™ will dry to a lighter color when it’s dry to touch. Use additional SEMCO Liquid Membrane™ to seal the defects. Required total thickness is 0.03 - 0.04 inches for non submerged applications. -
5
Curing Time
Curing time depends on temperature, humidity and airflow, however typically initial cure is within 6 - 7 days as per specific product recommendations. If SEMCO Liquid Membrane is used as a primary waterproofing, you can tile over the next day with regular tile adhesive of your choice.
-
1
Prepare your surface and Gather your materials
For metal surfaces we recommend our Preparation D in order to chemically etch the surface prior to application. For this you will need the following cleaners : Nu-Lift Cleaner and Stone Soap Ensure your surfaces are fully cleaned and dried. Gather all the products and tools needed for your project.If you need assistance with which cleaners are needed for the Prep, feel free to use our live chat or call us! -
2
Fabric Reinforcement
If you have any joints, Fabric Reinforcement is needed to bridge the joint. To apply the Fabric Reinforcement, apply a generous coat of SEMCO Liquid Membrane™ over the crack. Put the Fabric Reinforcement on a press it flat, after 10-15 min apply another coat of SEMCO Liquid Membrane™ over the Fabric Reinforcement to encapsulate it. Let it dry to the touch before applying SEMCO Liquid Membrane™ over the entire surface. -
3
Masking
Mask off areas that are not receiving any coating. Remove masking tape before material has fully cured. -
4
APPLYING COAT
Use a 1/2" nap roller. Allow any pre-treated areas to fully dry. Apply a thin coat (0.015 inch per coat) of SEMCO Liquid Membrane™ with brush or roller over substrate including pre-treated areas. Once you can walk on the surface and not get any residue on your shoe or feet or cannot leave a fingerprint impression it is ready to re-coat. Apply another thin coat of SEMCO Liquid Membrane™ in an alternate direction over the first coat of SEMCO Liquid Membrane™. Let topcoat dry to the touch, approximately 1–2 hours at 70 °F (21 °C) and 50% RH. When last coat has dried to the touch, inspect final surface for pinholes, voids, thin spots or other defects.SEMCO Liquid Membrane™ will dry to a lighter color when it’s dry to touch. Use additional SEMCO Liquid Membrane™ to seal the defects. Required total thickness is 0.03 - 0.04 inches for non submerged applications. -
5
Curing Time
Curing time depends on temperature, humidity and airflow, however typically initial cure is within 6 - 7 days as per specific product recommendations. -
6
Additional Information
For clean up use warm water to clean brush or roller right after use. For optimal bonding we highly recommend preparing the surface as mentioned above for best results. Stir up the product well before use in order to mix up the color pigments. Avoid application in direct sun light in the afternoon or temperatures of over 85F as it might cause the product to dry too fast before it can adhere to the substrate Suitable for light foot traffic.For heavy foot traffic or vehicle traffic, we recommend using SEMCO Titan Shield Gloss. It can not be applied to wet substrates or substrates still containing moisture, else it will not cure correctly and stay tacky. Max. rest moisture in substrate can be up to 3%. If you are unsure about the moisture content, have it measured prior to application. Ensuring that a surface is pH balanced before applying a coating is crucial for optimal adhesion and performance. Therefore we recommend our preparation methods for optimal adhesion. We do not recommend acid washes. For applications where the product is fully submerged, 3 coats @20mil each is required and allow a curing time of minimum 6-7 days.Also application must coat entire surface to above the waterline. Application on non porous surfaces such as metal or fiberglass : Apply thin coats as this will allow for the product to cure faster. Cure times are displayed in our curing chart. However if coats have been applied too thick, the surface might feel tacky. This is a sign of trapped moisture. If you have left over product, apply a very thin coat over the entire surface. The surface needs to be fully cured and hard before permitting water. For applications where SEMCO Liquid Membrane™ is applied on pool plaster, extended curing times might occur as plaster holds more moisture which needs to breath out first. A slight color change may occur when being in contact with water when the product has not fully cured yet. This however will not affect the performance of the SEMCO Liquid Membrane™. It is always advisable to apply a small test patch in an inconspicuous are to ensure adequate adhesion prior to full application. If you have multiple containers of SEMCO Liquid Membrane™, we highly recommend to either mix them together or use one container for the last layer to get color consistency.
Need Assistance?
OUR TEAM OF EXPERTS ARE STANDING BY TO HELP MAKE SURE YOUR PROJECT IS A SUCCESS.
CALL OR EMAIL US AT: 1-833-211-2297 info@semcoworks.com
CALL OR EMAIL US AT: 1-833-211-2297 info@semcoworks.com
