Orange Subfloor For Tile

With ceramic tile you also need to limit the deflection between joists which is a function of the subfloor thickness and how it is installed.

Orange subfloor for tile. As with a wooden subfloor a concrete subfloor must be level for successful tile installation. To prepare your concrete subfloor make sure that it can accept water penetration. Ditra is an uncoupling membrane designed for ceramic and stone tile installations on floors. Additionally a steps must be taken to ensure that a concrete floor will create a solid bond.

Test by sprinkling water on various areas of the subfloor. For this reason ceramic and porcelain tile floors can be considered somewhat delicate despite the inherent strength of the material. Ditra allows for ceramic tile application over single layer plywood or osb subfloors on joists spaced up to 19 2 488 mm o c. It provides uncoupling to prevent cracked tile and grout.

It sounds like your joists are well within the acceptable limits of l 300 so your main concern is the deflection of the subfloor between joists.