USG Tile & Flooring Solutions USG DUROCK® BRAND CEMENT BOARD WITH EDGEGUARD™ Installation Guide
USG DUROCK® BRAND CEMENT BOARD WITH EDGEGUARD™ For more than 30 years, USG Durock® Brand Cement Board has set the standard for proven performance in the backerboard category. The new USG Durock® Brand Cement Board with EdgeGuard™ offers enhanced, proprietary edge performance and minimizes spin-out and crumbling. USG Durock® Brand Cement Board with EdgeGuard™ installs quickly and easily, while maintaining the brand’s tradition of quality and reliability.
WHAT YOU’LL NEED Floors thickness 1/4 in. (6 mm), 1/2 in. (12.7 mm), 5/8 in. (16 mm) Subfloor should be minimum 5/8 in. (16 mm). APA spanrated plywood or OSB with an Exposure 1 classification or better. Countertops 1/4 in. (6 mm), 1/2 in. (12.7 mm), 5/8 in. (16 mm) thickness Minimum 3/4 in. (19 mm). APA span-rated plywood or OSB with an Exposure 1 classification or better. Cover base with USG Durock™ Brand Tile Membrane, 15 lb. (6.8 kg) felt or 4-mil polyethylene and attach with 1/4 in.
Floor Installation 1/4 in. (6 mm), 1/2 in. (12.7 mm), 5/8 in. (16 mm) POSITIONING Fit ends and edges of panels closely but not forced together, maintaining 1/4 in. (6 mm). space between panels and perimeter walls. Stagger joints a minimum 16 in. (406 mm) so four corners never meet. Offset panel joints a minimum 8 in. (203 mm) from subfloor joints. 1/4 in. gap cut edge 16 in. factory edges underlayment 16 in. FASTENING Secure panels while adhesive is still wet. Space fasteners 8 in. (203 mm) o.c.
Countertop Installation Wall & Ceiling Installation Cover plywood base with USG Durock™ Brand Tile Membrane, 15 lb. (6.8 kg) felt or 4-mil polyethylene and attach with 1/4 in. (6 mm) galvanized staple. FASTENING Fasten to studs spaced 16 in. (406 mm) o.c. Space fasteners 8 in. (203 mm) o.c. for walls, 6 in. (152 mm) o.c. for ceilings. Fit ends and edges of panels closely but not forced together. 1/4 in. (6 mm), 1/2 in. (12.7 mm), 5/8 in. (16 mm) 1/2 in. (12.7 mm) & 5/8 in.
1/4 in. (6 mm), 1/2 in. (12.7 mm), 5/8 in. (16 mm) POSITIONING Where tile will not cover entire wall surface, such as above tub and shower surrounds, determine where you want the tile to end and draw a level line at this height. Be sure to allow for height of tile cap, if applicable. cap height of tile Use this first row as a guide to keep tiles and grout lines level and ensure alignment with tiles of adjacent tub or shower surround.
Installing Ceramic Tile Apply latex-fortified mortar or Type 1 organic adhesive with a notched trowel. Hold trowel at an angle to maintain uniform thickness. Refer to setting material manufacturer for specific information related to trowel type and size. Working a small area at a time, press tile into place with a slight twisting motion to seat properly. Prevent adhesive buildup on tile edge and in grout space. If adhesive squeezes from under tile, remove excess before it dries.
CUSTOMER SERVICE 800 621-9523 TECHNICAL SERVICE 800 USG.4YOU (874-4968) PRODUCT INFORMATION See usg.com/edgeguard for the most up-to-date product information. DANGER Causes skin irritation. Causes serious eye damage. May cause an allergic skin reaction. May cause respiratory irritation. May cause cancer by inhalation of respirable crystalline silica. Do not handle until all safety precautions have been read and understood. Avoid breathing dust.
