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d. Fill gaps between cement board panels with latex-Portland cement mortar, and embed two inch (2") <br /> wide fiberglass mesh tape in skim coat of same mortar over joints and corners. <br /> 2. Install mortar setting bed over plywood subfloor at all tiled floors at wood frame floor systems: <br /> a. Thickness: <br /> — One inch (1") at in-floor hydronic heating systems <br /> — 5/8 inch at in-floor electrical heating systems <br /> — 3/8 inch at remainder. <br /> 3. Unless unavailable, provide and install bullnose trim pieces at all exposed tile edges. <br /> 4. Lay out tile so that no tile less than 1/2 size occurs; and so that joints are straight, uniform grout lines, <br /> parallel with walls and/or floors; or as shown on the Drawings. <br /> 5. Cut tiles with powered cut-off blade and drill holes in tiles, where required, with powered carbide-tip drill <br /> bit. Discard cut or drilled tiles having chipped or broken edges. <br /> E. Installation Methods: <br /> 1. Slab-on-Grade Concrete Floors, Thinset: Dry-set or latex-Portland cement mortar bond coat. <br /> 2. Wood Subfloors, Thickset: <br /> a. Cleavage membrane over wood subfloor <br /> b. Reinforced mortar setting bed <br /> c. Dry-set or latex-Portland cement mortar bond coat. <br /> 3. Shower Receptors: Floor, Thickset; Cement Board Walls, Thinset: <br /> a. Waterproof inembrane over concrete or wood subfloor; tied into floor drain; up walls minimum 12 <br /> inches <br /> b. Reinforced mortar setting bed, sloped to drain <br /> c. Dry-set or latex-Portland cement mortar. <br /> 4. Gypsum Board Walls Subject to Moisture, Thinset: Dry-set or latex-Portland cement mortar bond coat. <br /> 5. Gypsum Board Walls Not Subject to Moisture, Thinset: Organic Adhesive. <br /> 6. Cement Board Walls and Ceilings, Thinset: Dry-set or latex-Portland cement mortar bond coat. <br /> F. Ti1e Schedule: <br /> 1. <br /> , <br /> 633 SPECIFICATIONS <br /> Page 54 <br />