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.

For example the maximum deflection for a joist span of 15 is 15 12 360 1 2. It must be clean and dry and fully cured for at least 28 days. Overly absorbent as well. 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.

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. 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. 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. 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.

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. Cement based backer board. General substrate requirements all substrates must be flat smooth and free of all surface contaminants that could act as a bond breaker. Chipboard cushioned vinyl flooring particle boards of any type oriented strand board osb interior grade plywood tongue and groove planking and hardwood floors are unsuitable substrates for direct installation of ceramic tile.

Substrate preparation appropriate substrates. 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. Ft plus any long term deflection due to the weight of the floor. Before the year 2010 the 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. Concrete masonry existing well bonded ceramic tile proper til ing underlayment over wood or steel framed construction. Ansi a108 02 4 0 4 1 4 3 1. Concrete concrete is an acceptable substrate for both ceramic or vinyl tile.