Concrete deactivator or retarder is used to prolong the curing process of concrete. Sometimes, when large amounts of concrete are pored during the summer months, deactivator is added to slow the curing process to allow the concrete to be properly finished before it dries. It’s also used to give concrete the exposed aggregate look. Deactivator is applied to the concrete with a pump sprayer, then the top layer is pressure washed off to show the exposed aggregate. On most pool decks, deactivator is applied then pressure washed off to remove the top layer of the concrete. Then a product called Kool Deck is applied to keep the decks surface cool enough to walk on.
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