Tile installers Northern Virginia General Contractors NOVA CONTRACTOR NORTHERN

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Northern VA Tile Contractors cannot install tile directly to the following: Luan plywood, cushioned vinyl flooring, particle boards of any type, O.S.B. (Oriented Strand Board), tongue & groove planking, Chip board, and hardwood floors

Ceramic tile, Porcelain tile: Northern VA Tile Contractors does NOT recommend tile installation directly to plywood surfaces. Plywood has a smooth surface, and when it is exposed to moisture, it tends to swell, warp, and delaminate . Although it can be done successfully, we will not guarantee tile installations on these surfaces.

Sub Floor: Northern VA Tile Installers believes construction should consist of a double layered, 1-1/8" thick, exterior grade plywood installed over floor joists spaced a maximum of 16" on center. Face grains of first plywood layer should be installed perpendicular to joists for maximum stiffness and staggered with an 1/8" wide gap between each sheet. Install plywood panel edges 1/4" away from restraining surfaces, including perimeter walls, cabinetry, and door jambs. These are expansion gaps and should not be bridged with setting material. In addition, sub floor deflection should not exceed L/360 of span.