Apply 1/8 to 1/4 thick latex- fortified portland cement to solid surface—never on top of carpeting or padding. Fasten DUROCK Brand Cement Board with 1-1/4 hot-dipped galvanized roofing nails or 1-1/4 DUROCK Brand Screws, spaced 8 o.c. in both directions, penetrating floor a minimum of 3/4.
What kind of screws do you use on durock?
C. DUROCK Steel Screws, 32 mm (1-1/4) long, are used for applying 12.7 mm (1/2) DUROCK Cement Board to walls or ceilings. D. DUROCK Steel Screws, 42 mm (1-5/8) long, are used for applying 15.9 mm (5/8) DUROCK Cement Board to walls or ceilings.
Can you put screws in cement board?
Cement board attached to plywood or similar underlayment will hold with only 1 1/4-inch screws; for thick or heavy metal fixtures, use 1 5/8-inch screws. In general, 1 1/2-inch galvanized nails will hold the board firmly in place. … Even if you use this extra adhesive, you should still apply the nails or screws.
Do you need special screws for cement board?
To attach the cement board to the studs, you’ll need special 1-1/4 in. cement board screws (see Fig. B). These screws have a coating to resist corrosion, a special wide head with cutting flutes and hi-low threads for a strong grip. If you can’t find them at a home center, call tile specialty stores.
Do you nail or screw cement board?
Fasten HardieBacker cement board with specified nails or screws (as listed in “Materials Required”) every 8” over the entire surface. Keep fasteners between 3/8″ and 3/4″ from board edges and 2″ from board corners. Prior to setting the tile, fill all joints with the same mortar used to set the tiles.
Do you need Thinset under durock?
However, many manufacturers including, both Durock and Hardiebacker not only recommend that you use thinset under their backerboard, but they specify it and will void the warranty on their product if it’s not used.
What do you put on durock seams?
Fill joints with latex-fortified mortar or Type 1 organic adhesive and immediately embed alkali-resistant, fiberglass mesh joint tape. Install tile. Note: Because cement board fasteners may protrude through the plywood base when 1/4″ cement board is used, 1/2″ or 5/8″ cement board is preferred in this application.
Can I use drywall screws on durock?
All About Fasteners, Episode 6: Special screws for cement backer boards (VIDEO) You don’t want to use regular drywall screws for cement boards. They can corrode, they can break down the edges of the boards, and they won’t drive in flush properly. Use ITW’s ROCK-ON and BACKER-ON screws instead.
How far apart do you screw durock?
Fasten panels to subfloor while the adhesive is wet with 32 mm (1-1/4″) CGC Durock Wood Screws or 38 mm (1-1/2″) hot-dipped galvanized roofing nails spaced 203 mm (8″) o.c. in both directions.
What Thinset do I use for cement board?
Installing cement board over a wood subfloor
The good news is that, basically, any thinset mortar will work for this. Some manufacturer’s instructions say to use a modified mortar and you should follow those instructions.
Can you use Liquid Nails on cement board?
LN-907 Liquid Nails is recommended for cement board and most other common building materials. The application temperature is from 22 to 120 Fahrenheit and the service temperature is -20 to 140 degrees Fahrenheit. This makes it ideal for just about any DIY project and on most construction projects.
How far apart should screws be in cement board?
Secure Backerboard with Screws
Drill cement board screws through the backerboard sheets every 6 to 8 inches. Position the screws at least 1/2-inch, but no more than 2 inches, from the edge of the sheet.
Can you nail durock?
Fasten DUROCK Brand Cement Board with 1-1/4 hot-dipped galvanized roofing nails or 1-1/4 DUROCK Brand Screws, spaced 8 o.c. in both directions, penetrating floor a minimum of 3/4.
Is it OK to walk on cement board?
Some cement boards are “softer” than others, so dragging a refridge over it will crush or damage some. the main thing is just be carefull of it.