Cement Board Detail Apply it to the wall with the bottom edge about 1/4 in. 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. above the tub.

How close should cement board be to shower pan?

Wallboard needs to have an expansion joint of 1/8 inch around the perimeter of the shower and between each board. This is to allow for movement of the studs. The wallboard must be installed 1/8 inch above the shower pan.

How high should cement board be in shower?





Be sure to figure the height of your tile backer board to be a minimum of 6 feet above the shower floor. This will keep you from having any moisture problems with your drywall.

Where do you put tile backer board?

What is a backer board and why should you use them? As a building material, interior fibre cement tile backer board products are especially suited as a tiling base for tiling wet areas such as bathrooms, kitchens and showers as it is resistant to permanent water damage and does not need to be treated before tiling.

Do you need cement board behind shower surround?

Install cement board or an equivalent moisture-resistant backing material on walls behind tub and shower enclosures composed of tile or panel assemblies with caulked joints. Don’t use paper-faced backer board, i.e., paper-faced drywall, behind seamed tub and shower enclosures.

Does cement board go over lip of shower pan?

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. Apply it to the wall with the bottom edge about 1/4 in. 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.

Should cement board overlap the shower pan?





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. There should be a 1/4″ gap between the tub ledge and the backer board.

Is a vapor barrier necessary behind cement board?

If it’s a cement board, you need a vapor barrier, because cement retains moisture, which means the wood next to it is always damp. It does retain moisture, but the advice given by others here is to move the waterproofing between the tile and cement board with products like Redguard or Ditra.

Does it matter which side of cement board faces out?

No, it doesn’t matter. Regardless of which side faces out during installation, you can expect the same great performance that has made USG Durock® Brand Cement Board the preferred choice of professionals and do-it-yourselfers for decades.

How do you install cement board for a tile shower?


Quote from Youtube video: Work against the stud here on this scab. And we're against the stud here so we're gonna slide it. Down. We're against this there's no gap no gap no gap no gap. Then if we come down here.

What should I install behind my shower surround?



Quote from the video:
Quote from Youtube video: And insulate it before the shower unit goes in first I make sure there's solid blocking all the way around the flange. Area. Then I install the insulation. And the cavities behind the unit. Then I

Should you use green board or cement board in a shower?

Cement backer board such as Durock is best used for tile in highly wet applications such as shower stalls, with greenboard and other water-resistant drywall panels kept only to high-humidity areas. Greenboard’s paper facing alone does not inhibit mold growth. The facing must be treated with mold-resisting agents.

What material do you put behind a shower wall?

Rigid air barrier materials for use behind showers and tubs include fiber-cement, fiber-reinforced gypsum, glass mat gypsum, or fiber mat-reinforced cementitious backer panels.

How do you install cement board in a tub surround?



Quote from the video:
Quote from Youtube video: So then i just take cement board tape. And i cover. The porcelain part of the tub or fiberglass. Whatever it is. And press that tape down cement board tape.

How do you install Hardiebacker on shower walls?

Quote from the video:
Quote from Youtube video: Keep fasteners 3/8 inch from board edges and two inches in from sheet corners. Set fastener heads flush with the surface. Without over driving.

Can you tile over cement board in a shower?

There are several acceptable applications of cement board in the shower. All applications pair up the tile board with some kind of waterproofing material, whether a liquid membrane, plastic sheeting, an uncoupling membrane like Schluter Kerdi, or a board that is already faced with waterproofing.

Do you need to waterproof cement board before tiling?

Tile and grout are not waterproof



Cement board will not fall apart when exposed to water. But like a concrete walkway, it can soak up water. It can also dry out and be perfectly fine. The second coat of Hydroban (light green) is being applied to the top of the half-wall.

How do you waterproof cement board in a shower?



Quote from the video:
Quote from Youtube video: Use painters tape to protect the tub from the silicon and the waterproofing. Next fill the gaps between the cement board and the tub with silicone. Then allow it to dry before you begin the next.

Can I put Redgard on drywall?

Redgard waterproofing in your bathroom can help prevent problems with drywall. Drywall is for covering every room in the house and is very versatile. It can be covered with another wall covering or stomped with a unique drywall texture.

Can you use green board behind tile in shower?

So what does all this mean? It means “Greenboard” can still be used in bathrooms (and other areas), it just cannot be used as a backer for tile in a shower or tub surround. It can be used in areas not subject to direct water exposure (tub/shower surround), and areas of noncontinuous high humidity (bathrooms).

How do I waterproof my shower walls before tiling?

Quote from the video:
Quote from Youtube video: Apply a silicon sealer to all the perimeter joints as a final touch seal the grout joints with towel grout sealer.