should i use 1/4 or 1/2 cement board
L360 deflection for a 16 center wall stud is very low under 116. The only reason to use one size over the other is if one thickness will work better than the other.
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For example 14-inch board weighs less is easier to affix to the substrate with either screws or nails and is easier to cut.
. Cement board attached to plywood or similar underlayment will hold with only 1 14-inch screws. Drive the screws in so that the heads are slightly below the surface of the backer board sheet. If you want to be really safe you can go 1 subfloor plus 12 backer and this would be OK for 98 of the homes built in the late 70s assuming they met building codes then.
TECHNICAL DATA Property ASTM Test Reference 14 Value Flexural strength C947 1000 psi Indention strength D2394. Tear the shims out. Even if you manage long screws they arent going to go deep enough.
Normally these can easily be screwed tightly with wall studs. If it is indeed 14 couldnt he shim out the studs use 12 wonder board and then end the tile with bullnose the end pieces that step down 12 Upvote 7 05-20-11 0100 PM H HeresJohnny Member. The cement board is the much heavier of the two.
For flooring or wall installation some builders choose to apply a thin layer of thinset mortar under the cement. They use 14 drywall. Most cement boards come in three different thicknesses.
What thickness cement board should I use. Ive never seen 14 used in conventionally built houses new construction unless it was double laminated for a radius wall. If the studs are thick or metal opt for 1 58-inch screws instead.
Drill cement board screws through the backer board sheets every 6 to 8 inches. They are ¼ inch ½ inch and ⅝ inch respectively. What kind of backerboard are you going to use.
But this doesnt help your transition issue. Secure Backer Board with Screws. BuilderGCRemodeler Joined May 11 2006 7556 Posts 7 Feb 24 2008 Edited Use 12 Cement board in your shower wall area.
Then check the sag on a 12 board. With this in mind you should use 1 ¼-inch screws for ½ inch cement board that is attached to wood framing or a similar material. But drywalls have their own thickness.
Oldest bill_vincent 14 years ago Not exactly orthodox but yeah I imagine you could double them up SO LONG as you thinset one to the other to make one solid sheet as well as screwing them to the studs. Youll need to use 12. If you have a piece of cement board and a piece of plywood both of the same size then you can expect the cement board to weigh between 100 and 150 more than the plywood.
One thing that do-it-yourselfers should consider is the difference in manageability between 12-inch and 14-inch cement board. While some experts suggest using 2-inch screws this may be overkill depending on the application. Shadow700 14 years ago.
One thing that do-it-yourselfers should consider is the difference in manageability between 12-inch and 14-inch cement board. Position the screws at least 12-inch but no more than 2 inches from the edge of the sheet. For thick or heavy metal fixtures use 1 58-inch screws.
This is very hard to meet with any backer board. For example on an installation where one floor covered with thin ceramic tile meets another tiled with thicker tiles. Use the thin board under the thick tile and the thick board under the thin tile so that both floors have an equal finished height.
The industry standard is to use 12-inch-thick backer board on wall tile installations such as a tub surround. 14 will not be strong enough for wall tile. For wall or ceiling applications use 12 or 58 USG Durock cement board.
Either can be used on floors but only 12 can be used on walls. The board should not flex inward more than 14 between 16 on center walls studs. 14 USG Durock cement board should not be used for wall or ceiling applications.
Thats why drywalls are best removed before installing the cement boards. 2 Aug 8 2009 Durock 14 is made for floors. Dont forget you MUST install the cement board in a bed of fresh thinset - ALL manufacturers require it.
Yes it is that heavy and this means that it usually always takes two people to move lift and install it. That way the difference will only be 18. In general 1 12-inch galvanized nails will hold the board firmly in place.
With this in mind you should use 1 ¼-inch screws for ½ inch cement board that is attached to wood framing or a similar material. On the other hand 12-inch board can be a real bear to cut and manage at the job site. You could lose maybe 14 by putting a membrane.
I would mock up a test and then add 100 lbs of weight on your mock up. Embed the cement board and screw it to the underlayment with special 1-14 in. 14x2 12 Casey Sort by.
Cement Board Thickness Cement backer board comes in two standard thicknesses 12 inch and 14 inch.
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