Q: How long does an overlay last?
Properly installed and resealed every 2 to 4 years, an overlay lasts the life of the underlying slab, typically 15 to 25 years for outdoor work and indefinitely indoors. The sealer is the wear layer. When it dulls or starts to wear thin in traffic lanes, we strip and reapply, which costs a fraction of a new install.
Q: Will the overlay crack?
If the slab below it cracks again, yes, the overlay will eventually mirror that crack. That is why we cut control joints in the overlay over existing joints in the concrete and use crack-isolation membranes over hairline cracks that are not actively moving. New cracks the slab develops after install are not the overlay's fault, they are the substrate moving. We do not warranty cosmetic cracks for that reason, but the bond and the finish itself are warranted.
Q: Can you overlay over an existing pool deck or cool deck?
Yes. Most cool deck and Kool Deck surfaces from the 80s and 90s are polymer-modified toppings themselves, and we can grind them off or, if they are still well-bonded, scarify and overlay right over them. We test the bond first by chipping a small area. If the old deck pops loose easily, it has to come off before we overlay. If it is solid, we can layer over it.
Q: How is an overlay different from resurfacing?
Overlap a lot, but overlays are usually thicker and more decorative. Resurfacing is the catch-all term for putting any new layer over old concrete, often a thin spray-on coat for color uniformity. An overlay specifically refers to a polymer-modified cementitious topping applied at 1/16 to 1/2 inch with a structural bond. If you want stamped patterns, scored designs, or a polishable surface, you want an overlay, not a basic resurfacing.
Q: What about hot Orange County summers, will the overlay handle the sun?
Yes, with the right sealer. UV-stable acrylic sealers hold their color for 2 to 4 years before they need a maintenance coat. We avoid darker integral colors on south-facing pool decks because they get genuinely hot underfoot in July and August. Lighter tans, grays, and creams stay cool enough to walk barefoot. We will steer you to a palette that works for your exposure.
Q: Can I walk on it the same day?
Light foot traffic in 24 hours, normal use in 48 to 72 hours, vehicle traffic on driveways at 7 days. Sealer cure adds another 24 to 48 hours before pool water, sprinklers, or rain should hit the surface. We give you a written cure schedule when we leave.
Q: Is an overlay slippery when wet?
Smooth microtopping can be slick when wet, which is why we add a fine grit aggregate (Shark Grip or similar) to the final sealer coat on any pool deck, patio, or wet-area floor. Stamped and textured overlays have natural slip resistance from the pattern. We always finish exterior work with a non-slip additive, that is not optional.