How Do You Install A Porcelain Tile Floor Over A Concrete Slab?
Porcelain tile is basically a harder, higher-quality version of ceramic tile. Both are clay-based, and both require a very strong, solid underlayment to prevent cracking after the tile is laid. If you’re tiling a wood subfloor, you should lay cementboard over the plywood to get that solid surface, but if you’re tiling a concrete slab, you’ve already got just about the best underlayment you could want. It’s important that the slab isn’t cracked or crumbling, and is very clean, dry and free of obstructions before you start. Mark the middle of each wall at the concrete floor, using your pencil and tape measure. With a helper, stretch a chalk snap line over the middle of the floor in one direction, between two opposing marks. Snap the line. Stretch the snap line in the opposite direction, intersecting the first line. Lay a carpenter’s square at the intersection of the string and the previously snapped line, to ensure the two lines are at 90 degrees (a right angle). Reposition the string if
