should i use 1/4 or 1/2 cement 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. Instead USG provides a detailed construction handbook for using cementboard wherein it advocates using only 12-inch-thick boards.
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Thats why youve to find the wall studs first.
. On the other hand 12-inch board can be a real bear to cut and manage at the job site. If youre installing backer board over an existing subfloor 14 inch is sufficient. Use the thin board under the thick tile and the thick board under the thin.
12 plywood is for temporary applications exterior sheathing and used as gigantic shims. Cement-fiber or similarly reinforced backer board comes in standard 14 inch and 12 inch thicknesses. While some experts suggest using 2-inch screws this may be overkill depending.
It should be almost unnoticeable if done right. When to use 12. Yes it is that heavy and this means that it usually always takes two people to move lift and install it.
For example 14-inch board weighs less is easier to affix to the substrate with either screws or nails and is easier to cut. If youre installing backer board in new construction attaching it directly to floor joists opt for 12 inch sheets. This is why if you screw cement boards on drywall its likely to break down.
For thick or heavy metal fixtures use 1 58-inch screws. It does not belong as a floor or a roof. One thing that do-it-yourselfers should consider is the difference in manageability between 12-inch and 14-inch cement board.
In general 1 12-inch galvanized nails will hold the board firmly in place. I am however concerned and contemplating 14 or 12 Hardibacker sheets. Would it be okay to use 14 if we put extra 2x4s in the wall.
Drill cement board screws through the backer board sheets every 6 to 8 inches. Drywalls are weaker and cant bear too much weight. Cement board attached to plywood or similar underlayment will hold with only 1 14-inch screws.
The only reason to use one size over the other is if one thickness will work better than the other. Secure Backer Board with Screws. Locate the Wall Studs.
Can I Put 14 Backer Board Over Drywall. For example on an installation where one floor covered with thin ceramic tile meets another tiled with thicker tiles. What subfloor should HardieBacker board be installed over.
The cement board is the much heavier of the two. For wall or ceiling applications use 12 or 58 Durock cement board. If so how close would they need to be.
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. I used 3 screws and Liquid Nails subfloor glue. Youd need about ¾-inch of screw thread to screw into a 2 x 4.
One example is in a bathroom when you want to create a seamless surface for painting. It is also used in closets with rough walls. The minimum subfloor specified is 58 exterior grade plywood or 2332 exterior grade OSB subflooring.
Drive the screws in so that the heads are slightly below the surface of the backer board sheet. Position the screws at least 12-inch but no more than 2 inches from the edge of the sheet. Minimum 58 exterior grade.
For flooring or wall installation some builders choose to apply a thin layer of thinset mortar under the cement. If you have 38 sheetrock use 12 cement board and feather out the joint to approx 10 to 12. They are generally used in place of drywall when the walls are not quite smooth.
14 Durock cement board should not be used for wall or ceiling applications. Should I use 12. I have a couple very minor soft spots that my wife does not even notice.
If you have a lot of drywall to cover you can use a 14 backer board. This would in turn crack the grout and tiles ruining your work. Especially if its a wall.
The reason I ask is that weve got 8 sheets left from our last project and Id like to use them on our upcoming bathroom. I know 12 cement board is the spec for shower walls due to the deflection of 14 Hardibacker. I know Hardibacker is not structural but I am thinking 12 would be the better choice.
The first and foremost task before you get started is to locate the wall studs. If the studs are thick or metal opt for 1 58-inch screws instead.
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