ANSWER – No there should not be a gap between the top of the bathtub flange and the backer board on the wall. … The backer board should overlap the tub flange so the tile has a stable backing to attach to. This requires shimming the backer board out from the studs so the wall is plumb.
Does cement board go over lip of bathtub?
The best approach when installing cement board or other tile backer around a tub is to keep the cement board out of the lip area. … above the lip of the tub. Then apply a generous amount of thin-set to the bottom bathtub tile and position it 1/8 in.
Do you need put plastic behind cement board shower?
plastic behind cement board with waterproofing is essentially suspenders when you already have a belt. the waterproofing is also a vapor retarder so if the red guard or kerdi product is continuous, lapping corners and all, the plastic will be unnecessary.
Does drywall go over the tub flange?
You can bring sheetrock right down to the flange just like in the picture as long as you aren’t going to tile over it. I would suggest using sheetrock over backer board on surfaces which you intend to paint.
Does cement board go over shower pan?
It requires no mud job or waterproofing membrane, but it does require direct access to the studs of the shower. … This will create a small lip at the bottom of the shower walls where tiles or an acrylic surround would bump out, leaving a gap. Therefore, the pan must be installed first.
What is a tile flange on a bathtub?
It’s a “raised rim” around the edges of the tub that will sit against the shower walls.
Does cement board need to be waterproofed?
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.
What kind of drywall goes around a bathtub?
Step 2: Cut Water-Resistant Drywall The walls surrounding the tub need to use water-resistant drywall or, preferably, cement board instead of regular drywall to protect them from moisture damage.
Do you have to put drywall behind cement board?
Because cement board can be used either for floors or walls, the surface below the cement board will vary: … In such wet areas, never install cement board directly over drywall or green board. Instead, first, remove the existing surface material, then install the cement board over the studs and membrane, as applicable.
Does backer board go over shower flange?
ANSWER – No there should not be a gap between the top of the bathtub flange and the backer board on the wall. … The backer board should overlap the tub flange so the tile has a stable backing to attach to. This requires shimming the backer board out from the studs so the wall is plumb.
Article first time published on
What side of cement board faces out?
Cement board has a smooth side and a rough side. Face the rough side out if you will be using thin-set mortar adhesive to install the tile but the smooth side out if you will be using latex mastic.
What happens if you don't use thinset under backer board?
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. … Thinset is going to create a solid surface under tile and prevent flexing that could lead to cracking.
Do I need cement board for shower ceiling?
1 Answer. You don’t have to use a backerboard on shower ceilings – especially if you aren’t tiling it. You can drywall it. If you do use a backer board I would suggest Hardieboard.
Do you need a vapor barrier with Hardie board?
Depending on your local building authority having jurisdiction (the AHJ) over your building codes, vapor barriers are almost always required, whether your builder uses James Hardie products or some other, inferior product.
Can I use cement board for shower floor?
Cement board can be used just as effectively on walls as it is on floors. Waterproofed cement board is an excellent backing for showers and bathtub surrounds. Doing this will require that you remove the existing surface material before installing backer board over the studs. … Always use cement board screws.
Is Durock cement board waterproof?
USG Durock Brand cement board with EdgeGuard offers architects, builders and tile contractors a strong, water-durable tile base for tub and shower areas. Also an ideal underlayment for tile on floors and countertops in new construction and remodeling.
Do you need to waterproof durock in shower?
Durock (USG): If waterproofing is desired, use USG Durock™ Tile Membrane or USG Durock™ Brand Waterproofing Membrane. … retarding membrane is optional unless the local building code requires it.
Which is better cement board or Hardibacker?
Durock is a reliable cement product that contains glass mesh. It is the heavier of the two materials, which means it is more difficult to use and maneuver. … HardieBacker is much more light, and it is also the best selling brand of cement board available. It is much cleaner because it does not have any glass in it.
Can you just screw down cement 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. … It is important to highlight that screws shall not be installed all the way down to the floor joists.
Does cement board need to be primed before tiling?
No you shouldn’t need to prime the boards for the tile adhesive to bond to them.
Will Thinset stick to tub flange?
By using the right kind of materials and tools, it is possible for you to tile over the tub flange with ease and efficiency. … You can also apply the thinset mortar effectively over the whole wall so as to make sure that the bond for the tiles is a long lasting one.
Do you need a tile flange on a bathtub?
A tile flange is necessary for a tub that will be also be used as a shower, so as to be able to redirect the shower spray runoff correctly back in to the tub without moisture damage to the walls. It’s not necessary for a drop in soaking or jetted tub that has a separate shower.
Can you add tile flange on bathtub?
Sophie Wheeler. If it’s an acrylic tub, the short answer is “technically yes“. … They are designed for the flange to fit against the wall, and the wall of the tub to be directly below it to funnel the overspray back into the tub.
How do you waterproof drywall above a shower?
Prime the drywall with oil- or shellac-based primer. These coatings protect against moisture better than water-based primer, but they are noxious, so wear a respirator while using them. Spread the primer with a paintbrush or roller and let it dry before painting.
Can you tile directly onto cement board?
12mm HardieBacker cement boards, holding up to 200kg, can be used instead of plaster or plasterboard which typically holds 20-32kg, so almost any tile can be fixed. When tiling with a cementitious-based tile adhesive, prime the face of the board with one coat of BAL Primer – diluted 1:1 by volume of water.
Do you need Thinset under cement board?
Not only is thinset a critical component underneath cement board but the other critical component is the fasteners. And you won’t have the fasteners if you are trying to install it over concrete.
Can I screw cement board to drywall?
Therefore, drywall screws or nails will not work for cement boards. The fasteners designed for use with drywall do not feature the corrosion- and alkali-resistant coating that enables the cement board or galvanized fasteners to last.
What can you use for walls around bathtub?
- Summary.
- Vinyl Wallpaper.
- Paint.
- Tile.
- Beadboard.
- Tileboard.
Which is better green board or cement board?
Cement board will give you better service in a shower. Green board is good for lightly damp places like at the sink. It is not as good as cement board but a heck of a lot better than dry wall.
What is the best backer board for a shower?
Cement board is a good, reliable backer board that works well on both floors and walls. Keep in mind that most tile setters err on the side of caution and brush a waterproofing membrane on top of cement board when it is in wet areas like showers or tub surrounds.
