Expansion and control joints

Existing joints in concrete sub-floors must be carried through tile work and shall conform to architectural details and appropriate standards.

Expansion joints must be installed where the tile abuts restraining surfaces and directly over cold joints and control joints in structural surfaces and shall conform to architectural details. Make joints through tile work directly over structural joints at least as wide as structural joints.

Interior installations shall have expansion joints spaced a maximum of 20'0" x 20'0" (6m x 6m). Exterior areas shall have expansion joints spaced a maximum 15'0" x 15'0" (4.5m x 4.5m) or at centers determined by the project's structural engineer. Expansion joints shall be raked or cut through the setting bed to the supporting slab or structure.

Note: The responsibility for calculating the actual spacing and size of the expansion joints rests with the architect/engineer. Consult a reputable sealant manufacturer for recommended sealant.