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In places around the pool the cool deck has flaked off and I can see the bare concrete. The previous owner tried to patch it in places but it looks horrible because the texture AND color don't match.

Is there some kind of cool deck spary texture, like the kind of texture you can get for drywall? Also, can I paint all of the cool deck and will it last more than a year?

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3 Answers 3

up vote 6 down vote accepted

To repair cool deck flaking (not cracks in concrete):

Step One: All of the flaking or cracked texture needs to be removed. This is accomplished by using a scraper in conjunction with a high pressure washer. If the flaking is excessive and severe it may not be necessary to use the pressure washer. Bottom line is the old patch needs to be removed to expose the underlying cement. The cement also needs to be cleaned and all loose dirt or sand needs to be removed. On areas where the patch is solid and sticks firmly to the cement the sides of those areas should be smoothed at 90 degree angle to prepare for the new cool deck coating.

Step Two: After the removal of the old texture, wash off the exposed concrete and make sure all loose material is also removed. Using a mixture of half muriatic acid and half water, scrub the exposed cement to "score" the cement and also to clean off contaminants. After 3 or 4 minutes completely rinse off concrete and scrub with a hard brush to ensure all acid is removed. Again, a high pressure washer is always recommended for the best removal of all acid and residue. I let the concrete dry completely before moving on to the next step. I've found that any moisture remaining in the concrete will cause the new decking to flake and peel within a few years.

Step Three: Several products exist on the market for cool decking. The easiest is a product I've found is by a company by the name of E-Z Patch. My best advise is to use the internet to find a store that carries the product. The coating product is applied directly to the concrete with a roller. Two coats are typically required. Dry time is normally 3 to 4 hours depending on the day.

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It looks like the manufacturer sells a repair kit. Perhaps that will work for you: http://www.mortex.com/products/kxrk.html

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E-Z Patch 2 patching compound has a wide variety of colors to pick from. I don't think it's spray-on though.

Posts in this forum mention that Behr 1-Part Epoxy can be used on cool decks for pools. However, also note that this will cause loss of functionality of your deck - it won't stay as cool as when it was unpainted.

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Good point about how painting it will mean it's not a "cool deck" anymore. I don't like the idea of paint anyway . . . it's a temporary solution though I guess everything is temporary but real cool deck will last longer than paint/epoxy. –  tooshel Feb 8 '11 at 22:59

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