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.
Do you need special screws for backer board?
Backer-On screws can be installed with a standard impact or drill/driver and T-25 Star drive bit (included with product) for cement board fastening done right. Backer-On 1-5/8 in. Cement board screws are designed for attaching hardback or equivalent fiber cement Backer-On to wood or light gauge steel studs.
Can I use stainless steel screws on cement board?
If your screws were permanently bombarded with moisture then yes stainless would probably the route to take but if there was that much moisture then tanking would be required.
What kind of screws do you use for Hardie board?
James Hardie recommends 1-1/4” long galvanized or STAINLESS steel roofing nails or 1-1/4” long ribbed waferhead screws in compliance with the tile industry. It is 8-18 x 3/8” HD.
Can you use deck screws for cement board?
The screws should be alkali resistant, galvanized deck screws don’t qualify. The issue is corrosion from the cement products.
What kind of screws do you need for cement?
Concrete screws come in 3/16- and 1/4-inch diameter, in lengths up to 3-3/4 inches. Both hex-head and Phillips-head styles are available. They can be used in poured concrete, concrete block, and brick. Expect to pay about $15 for a 100-count box of 1¾-inch-long screws.
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.
Can I just screw down backer board?
Screw and Joints
Do not use drywall screws as they are not recommended to be used to hold the backer board in place. All of your backer board pieces should be cut before they are placed on the floor. … Double the screws in those areas just to be sure it is attached properly.
Will Hardie board hold a screw?
What type of fastener do you recommend for floor and wall applications of HardieBacker® cement board? In compliance with the tile industry, James Hardie recommends 1-1/4” long galvanized or stainless steel roofing nails (0.121” shank x 3/8” HD) or 1-1/4” long corrosion resistant ribbed waferhead screws (No.
Can I screw into hardiplank?
James Hardie Building Products recommends keeping nails or screws at least 3/8 inch from the end of a plank. … Drill pilot holes, at each mark, one-quarter to one-half inch deep, to make it easier to insert screws and prevent cracking the siding.
How do you drill a hole in cement board?
You can also cut holes using a jigsaw with a metal-cutting blade or a drill fitted with a carbide-grit hole saw. When using a jigsaw to cut a round or square hole, start by drilling a hole through the backer board with a 3/8-inch-diameter masonry drill bit. Then insert the jigsaw blade into the hole and start cutting.
What do you do with a gap between tub and cement board?
Ideally, you would leave a 1/8 inch gap which would then have the sealant applied to it. Either stopping the cement board above the tub flange or alternately shimming it out and dropping it down near the tub would both be good options.
How many screws do I need for cement board?
You will use approximately 55 screws per 3′ x 5′ cement board and 150 screws per 4′ x 8′ cement board. In wall applications, screws should be placed every 8″” when connecting to the wall studs.
Do you have to waterproof cement board?
Contrary to popular thought, tile and grout are not waterproof, and some moisture will penetrate even if sealant is used. … However, if you choose to use concrete backerboard, which is much stronger and more durable than gypsum board, a water vapor membrane must be placed underneath it or a sealant applied on top of it.