How do you install porcelain tile?

Answer 1

Basically, there are a few acceptable substrates for porcelain floor tile. Cementitious backerboard is usually preferred. Avoid using interior-grade plywood, OSB, multi-layer sheet flooring.

A growing trend with porcelain tile is larger tiles and smaller grout joints, both of which require a very flat floor. For this reason, you may have to use a self-leveling compound. Most self-leveling compounds make an outstanding substrate, but it's wise to use a product from the same manufacturer as the rest of your setting materials to avoid compatibility issues.

Use a premium thinset with strong bonding agents that are modified with latex - either premixed or as an additive during mixing.

Allow enough time for the thinset to dry (typically 24 hours) before grouting.

Forget traditional carbide cutting tools when cutting porcelain - you'll want drill bits, hole saws and saw blades with diamond edges.