How do I install tile onto a plywood floor with a hydronic radiant heat system?
Make sure that the floor meets deflection and construction standards (consult TDS 152 at www.laticrete.com) and tape all board joints. Apply LATICRETE Blue 92 Anti-Fracture Membrane to the plywood surface. Install the tile or stone using LATICRETE 333 Super Flexible Additive mixed with LATICRETE 317. Grout using LATICRETE SpectraLOCK® PRO Grout, LATICRETE PermaColorTM Grout, or LATICRETE 1500 Sanded Grout gauged with LATICRETE 1776 Grout Enhancer.