Ceramic Tile Substrate Requirements

Flatness requirements the american national standards institute ansi specification for the installation of ceramic tile stipulates that deviations in sub floor flatness should be no greater than 1 4 in 10 ref.

Ceramic tile substrate requirements.

The industry requirement for the substrate preparation for tiles larger than 15 inches on one edge is 1 8 inch in 10 feet 6 mm in 3 meters and 1 16 inch in 2 feet 1 6 mm in 0 6 m from the required plane when measured from the high points in the surface. Preparing a subfloor is an essential step for installing floor tile it provides a level surface that will allow the tiles to properly stay in place. Now largely regarded as the very best underlayment for ceramic tile in any application floors walls and countertops cement based backer board goes by many names. Before the year 2010 the tile.

Ansi a108 02 4 0 4 1 4 3 1. Installing over wood. Concrete concrete is an acceptable substrate for both ceramic or vinyl tile. Substrate preparation appropriate substrates.

Divide the total span of the floor joists in inches by 360 to determine the maximum amount the floor can give in the middleunder a live load of 40 lb sq. Regardless of whether you choose ceramic glass or natural stone tiles for your kitchen backsplash the surface material requirements are the same. It is generically called cement board or backer board or it can also be referred to by one of the common brand names such as densshield hardiebacker and wonderboard. General substrate requirements all substrates must be flat smooth and free of all surface contaminants that could act as a bond breaker.

Cement based backer board. Overly absorbent as well. However numerous other materials comprise ceramic tile installation portland cement mortar dry set or latex portland cement mortar organic adhesive epoxy adhesive chemical resistant water cleanable tile setting and grouting epoxy and chemical resistant furan mortar and grout. Ft plus any long term deflection due to the weight of the floor.

Concrete masonry existing well bonded ceramic tile proper til ing underlayment over wood or steel framed construction. For example the maximum deflection for a joist span of 15 is 15 12 360 1 2. To install ceramic tile over wood the wood surface must be structurally sound enough to support the weight of the tile. There are many other things to consider when installing exterior tiles surface preparation to bring the substrate within tolerance is one of the most critical.