Pool deck · SEMCO Liquid Membrane
Projects › Pool Decks & Patios
Wet, barefoot and in full sun. Your deck has to handle all three.
Most concrete coatings are built for one of those. A pool deck gets all three at once, plus chlorinated splash-out — so it needs grip when wet, a color that stays cool, and water kept out of the slab.
A weekend around the pool
Four steps. Barefoot-ready.
A pool deck is walked on wet, barefoot, in full sun. That combination sets everything about how you coat it.
Clean and kill the growth
Pressure wash, treat algae in the shaded areas, then Prep D. Fill the control joints and any cracks that have opened.
Bridge cracks and the coping joint
Fabric Reinforcement into cracks over ¼" and along the joint where the deck meets the coping — that’s the one that moves.
Two coats of membrane
Seals the slab against splash-out, pool chemistry and freeze-thaw. This is also the layer that carries the color.
Sealer with non-skid
Three coats of Titan Shield or two of Sealer MATTE, with Non-Skid Additive mixed in. On a wet barefoot surface this isn’t optional.
Non-skid isn’t optional on a pool deckA sealed deck is walked on wet, barefoot, often by children. The additive mixes into the sealer before you roll it, so it has to be decided now — it can’t be added afterwards. One customer specifically avoided a gloss finish elsewhere over exactly this concern.
Your deck
What does your deck need?
Tell us what you want it to do, then the surface and the area. Lighter colors run measurably cooler underfoot — the swatches show the SRI.
What do you want it to do?
The sealer alone gives you color, grip and protection. Adding the membrane underneath is what actually waterproofs the slab.
What is the deck?
Textured and exposed-aggregate surfaces have more real surface than their footprint, so they use more.
How big is it?
Length × width. If you’re coating the coping too, add its area in here.
Sealer finish
Matte is the more common choice around a pool — less glare off the water in full sun.
Tell us the surface and the area — we’ll size the whole job.
Untick anything you already have. Quantities are editable.
What it fixes
Hot underfoot, and slowly falling apart.
The biggest practical win. One owner reported his deck no longer feels as hot barefoot in summer — a lighter color reflects far more solar heat. White tests at SRI 64 against roughly 20 for weathered dark concrete.
Choose a light colorChlorinated water lands on the deck every day and soaks into unsealed concrete, taking salts with it.
Membrane + sealerWater in the pores expands and takes the surface off a layer at a time. Sealing stops the water getting in.
Membrane + sealerOne customer covered a patio stained by twenty years of indoor-outdoor carpet with three coats of Titan Shield in Sandy Beige.
Prep D, then colorWorks on pavers and brick, and on worn coping around the pool edge — a customer coated bare coping and said it made the whole pool look new.
Prep D: Nu-Lift + Stone SoapA slab that is heaving, sinking or badly spalled through. Resurface or replace first — a coating follows the shape it is given.
Real decks
Surfaces you can actually stand on.
“It doesn’t feel as hot barefoot on the deck as it used to.”
We have applied the sealer to our pool deck and it came out beautiful. Also in summer it doesn’t feel as hot barefoot on the deck as it used to.
“Stained from indoor/outdoor carpet for 20+ years.”
Titan Shield in Sandy Beige did an amazing job on my very aged back cement patio. It was stained from having an indoor/outdoor carpet covering it for 20+ years, and therefore ordered this hoping it would cover most of it. In chatting with one of SEMCO Works staff, they suggested Titan Shield, advising I would need 3 coats.
“10 gallons for the pool, 3 for the deck.”
Bought 10 gals of the Membrane for my pool and 3 gals of the Titan Shield for my pool deck as advised by their technician. I followed all the instructions including the preparation using their cleaners and I was able to apply it with no issues whatsoever. Happy with the results.
“I did a three coat system. Finish job looks great!”
I was in need of a waterproofing material to apply on my front porch floor and stairs. Application was easy, I did a three coat system. Finish job looks great! I’m excited to see how this product holds up with the different seasons.
“Really made the pool look nice.”
Used this product on a worn coping around an in ground pool. It applied and covered very well. Luckily prepping was super easy as it was bare, so no removing of old paint. So far very happy — really made the pool look nice, and I love the color I chose.
“So much easier to clean now.”
Did the playground for my kids in the backyard with the Titan Shield on pavers and it holds up great! Also did my garage with it and it is holding up fine. So much easier to clean now.
Why pool decks are their own problem
Wet, barefoot, and in full sun all day.
Most concrete coatings are specified for one of those conditions. A pool deck has all three at once, plus chlorinated splash-out and a freeze-thaw cycle in winter. So the finish has to grip when wet, stay cool enough to walk on, and keep water out of a slab that gets soaked every afternoon.
That’s why the answer here is two layers and a color decision. The membrane keeps water out of the concrete and carries the color; the sealer takes the traffic with non-skid mixed in; and choosing a lighter color is the difference between a deck people use in July and one they hop across.
Pool deck questions
The ones worth asking.
Will it be slippery when wet?
Not with Non-Skid Additive, which is why it’s ticked by default here. It mixes into the sealer before you roll, so it has to go in at the time — it can’t be added later. Matte also reads less slick than gloss around a pool.
Will it make the deck cooler?
A lighter color will. White tests at SRI 64 under ASTM E1980 against roughly 20 for weathered dark concrete, so it reflects far more solar heat. One owner reported his deck no longer feels as hot barefoot in summer after sealing it.
Do I need the membrane, or just a sealer?
If the deck is sound and you only want protection and color, the sealer alone will do a lot. The membrane underneath is what actually waterproofs the slab against splash-out and freeze-thaw — worth it on an older deck, or anywhere that freezes.
What about the coping?
Same system. A customer coated worn bare coping around an in-ground pool and said it made the pool look new. Add the coping area in the calculator.
Will pool chemicals affect it?
Normal splash-out is fine. What to avoid is concentration — don’t let undissolved tablets or granules sit on the deck surface, as a high local concentration can discolor the finish in that spot.
Can I do pavers or flagstone?
Yes. Pavers, brick and flagstone all work, and one customer used Titan Shield on pavers for a children’s play area. Textured surfaces use noticeably more material than their footprint suggests.
How long before we can use the pool again?
The deck needs the membrane fully cured — at least 7 days, longer with thick coats or humidity — before the sealer goes on, and the sealer needs its own cure after that. Plan the job for a stretch you’re not using the pool.
Not sure about your deck? Call 1-833-211-2297 — the team will check the surface and the color choice before you order.
Stop hopping across it. Seal it, and go lighter.
Cooler underfoot, grip when wet, and a slab that stops drinking chlorinated water every afternoon.
Size my deck