SEMCO field notes
fabric reinforcement guides.
Prep, application and troubleshooting for basements, roofs, showers, pools and more, written by the team that makes SEMCO.
8 articles
basementBasement Waterproofing Before Winter: A 7-Point Freeze-Thaw Checklist
A 7-point freeze-thaw checklist for basement waterproofing before winter: grading, cracks, reinforcement and a flexible membrane before the ground freezes.
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basementCrawl Space Waterproofing and Encapsulation: A DIY Liquid Membrane Guide
A full DIY crawl space waterproofing and encapsulation walkthrough: sealing foundation walls and cracks, installing the ground vapor barrier, handling vents and...
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fabric reinforcementWhat Is SEMCO Fabric Reinforcement and When Do You Actually Need It?
SEMCO Fabric Reinforcement adds tensile strength at floor-to-wall joints, corners, coves, and cracks over 1/4 inch, the spots a waterproofing coating fails...
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bathroomWhat Does It Cost to Waterproof a Shower Before Tiling? 2026 DIY vs Pro Breakdown
Professional shower waterproofing runs $450 to $2,500 depending on scope. A DIY liquid membrane and fabric reinforcement costs about $150 to $200...
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bathroomShower Waterproofing Membrane: What Actually Stops Leaks Behind the Tile
Grout isn't what stops a shower leak. See the 3 spots where showers actually fail, and how to waterproof them with a...
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bathroomWater-Based Membrane vs Silicone-Based Coating: Which Belongs in a Shower
Silicone-based coatings and a water-based liquid membrane both waterproof a shower before tile. Here's how they compare, by scenario, cure time, and...
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comparisonSilicone-Based Waterproofing Coatings vs Water-Based Membranes: A DIYer's Guide
Silicone-based waterproofing vs water-based membranes compared on cure time, adhesion, elongation, and cost, so you use the right one for your project.
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bathroomShower Waterproofing Membrane: The Complete DIY Guide Before Tiling
Tile and grout aren't waterproof on their own. Here's how to waterproof a shower before tiling with a DIY liquid membrane, seam...
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