Floor tiles are usually ½ to ¾ inch thick and attached to a wood or concrete subfloor with mortar. Grout fills the gaps between tiles.
A tile floor can last 100 years or more. A flat, stable, dry subfloor prevents cracking. Grout is porous, so water can stain it, and dampness encourages mold. If water gets through, it can damage the subfloor.
Lifespan: 100+ years