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.

It must be clean and dry and fully cured for at least 28 days. Ansi a108 02 4 0 4 1 4 3 1. Overly absorbent as well. 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.

This guide will show you how to prepare your subfloor for a tile installation project to ensure that it s fit to support ceramic or porcelain tile. 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. Regardless of whether you choose ceramic glass or natural stone tiles for your kitchen backsplash the surface material requirements are the same. Cement based backer board.

Installing over wood. 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. Concrete masonry existing well bonded ceramic tile proper til ing underlayment over wood or steel framed construction. Concrete concrete is an acceptable substrate for both ceramic or vinyl tile.

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. Substrate preparation appropriate substrates. For example the maximum deflection for a joist span of 15 is 15 12 360 1 2. Ft plus any long term deflection due to the weight of the floor.

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. 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. Before the year 2010 the tile.