should i use 1/4 or 1/2 cement board
It does not belong as a floor or a roof. Just the other day I saw a video featuring someone fastening Hardibacker directly to the subfloor with nothing underneath it.
Durock Brand 1 2 In X 3 Ft X 5 Ft Cement Board Outdoor Kitchen Appliances Cement Wall Waterproofing
Position the screws at least 12-inch but no more than 2 inches from the edge of the sheet.
. Half-inch cement backer board is ideal for most tiling jobs including walls floors countertops and ceilings. Click to see full answer. Cement board attached to plywood or similar underlayment will hold with only 1 14-inch screws.
Im not sure in this application if you need even backer. For wall or ceiling applications use 12 or 58 Durock cement board. Later did a kitchen wallbackspash using tile mastic on 12 oriented strand board textured side out.
I use the appropriate coated screws for both floors and walls. The industry standard is to use 12-inch-thick backer board. Drill screws through the backerboard sheets every 6 to 8 inches.
The minimum subfloor specified is 58 exterior grade plywood or 2332 exterior grade OSB subflooring. Dont forget you MUST install the cement board in a bed of fresh thinset - ALL manufacturers require it. Use 12-inch or 58-inch-thick cement board not 14-inch.
In general 1 12-inch galvanized nails will hold the board firmly in place. For countertops use 34-inch plywood beneath the backer board. If the studs are thick or metal opt for 1 58-inch screws instead.
14-inch 12-inch or 58-inch thick backer board. One thing that do-it-yourselfers should consider is the difference in manageability between 12-inch and 14-inch 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.
I did a woodstove surround on 12 drywall spaced from the surrounding wall by 12 using 1 wide scraps of drywall every 8 inches. 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.
No Thinset underneath the backer board. I have been using various types of 12 cement board on tub and shower walls and 14 fiber cement boards on bathrroom floors with 18 inch gap. Use 12-inch or 58-inch-thick cement board not 14-inch.
Use 34-inch exterior-grade plywood as a base. On the other hand 12-inch board can be a real bear to cut and manage at. 14-inch 12-inch or 58-inch-thick panels are all suitable for countertops.
Use 58-inch exterior-grade OSB or plywood as a base. 12 plywood is for temporary applications exterior sheathing and used as gigantic shims. Used mastic and 14 tile.
A 14-inch minimum thickness is needed but thicker panels are also fine. For example a 14-inch board weighs less is easier to affix to the substrate with either screws or nails and is easier to cut. 14 USG Durock cement board should not be used for wall or ceiling applications.
For flooring the backer board should be installed over a 58-inch thick OSB or plywood base. You should also be undercutting you jambs and casings to accept the tuck of the cement board and the tile AND the two layers of. One thing that do-it-yourselfers should consider is the difference in manageability between 12-inch and 14-inch cement boards.
For thick or heavy metal fixtures use 1 58-inch screws. On the other hand a 12-inch board can be a real bear to cut and manage at the job site. For example 14-inch board weighs less is easier to affix to the substrate with either screws or nails and is easier to cut.
First its super lightweight compared with the rest. It should be almost unnoticeable if done right. Youd need about ¾-inch of screw thread to screw into a 2 x 4.
Cement backer board comes in two standard thicknesses 12 inch and 14 inch. 7 Feb 24 2008 Edited Use 12 Cement board in your shower wall area. Grout the 18 gap.
Minimum 58 exterior grade. That way the difference will only be 18. 12-inch or 58-inch thick backer board.
And second since its foam the board is super easy to cut with just a utility knife. TECHNICAL DATA Property ASTM Test Reference 14 Value Flexural strength C947 1000 psi Indention strength D2394 1250 psi Weight C473. When doing floors I use 14 x 14 notched trowel with thinset over the sub floor.
14 Durock cement board should not be used for wall or ceiling applications. Tear the shims out. Drive the screws in so that the heads are slightly below the surface of the backer board sheet.
What subfloor should HardieBacker board be installed over. Foam-core tile backing board has two big advantages over other backer boards. Either can be used on floors but only 12 can be used on walls.
For flooring or wall installation some builders choose to apply a thin layer of thinset mortar under the cement. Durock 14 is made for floors. I know 12 cement board is the spec for shower walls due to the deflection of 14 Hardibacker.
Make that up by having the tile sit over the cement board just slightly where it meets the 38 SR. For wall or ceiling applications use 12 or 58 USG Durock cement board. If so how close would they need to be.
Apply directly to the wall studs or joists with each spaced at a maximum of 16 inches on-center. Use the thin board. The extra thickness is needed when spanning the studs and it provides a solid base for the tile.
If you have 38 sheetrock use 12 cement board and feather out the joint to approx 10 to 12. While some experts suggest using 2-inch screws this may be overkill depending. I use 15 lb felt with 100 overlap over the studs on walls.
A 12-inch thick 3 x 5 foot sheet weighs just 7-12 pounds compared with 45 pounds for a similar size sheet of cement board. Cement board seams require mesh tape and thinset. 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.
And for walls and ceilings apply 12-inch or 58-inch backer board screwed. Drill cement board screws through the backer board sheets every 6 to 8 inches. Would it be okay to use 14 if we put extra 2x4s in the wall.
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