Aug 25, 2015 · It’s fine to install porcelain tile over a concrete patio but there are some things that are different when tiling outside. For starters, you want to make sure that your tile has a rough enough surface so that you won’t slip. This is called a MOHS rating and you’ll want to find one that is rated for outdoors. 2 Measure the length and height of the niche. 3 Cut the tile trim. 4 Install the trim. Step 1. Check the thickness of your tiles. Once you’ve installed the tile niche, the next step is to install the tile trim around the edge. It’s important to select the tile trim according to the thickness of your tiles.
Choose ceramic tile, porcelain tile, or quarry tile, which are all part of the ceramic tile family and are ideal for areas exposed to water. This sounds obvious — of course, you want your shower and bathroom to be waterproof.