Yes, installing DekTek Tiles over your existing concrete slab is a great way to dress up your outdoor living space and really give your outdoors a classy elegant look. Depending on the condition of your slab there are a few different options. If your concrete slab is in good condition, you can Thinset the tiles down over the existing concrete and grout them in.
If your existing concrete patio or staircase is not in good condition and is cracked or busted up, we recommend installing a sleeper system 1" x 4" or 2" x 4" sleepers directly on the concrete and then set the tile on the sleepers. This will enable the wood sleepers to float over the cracked/damaged concrete without damaging the tile. This will give your deck and patio area the maximum longevity.