6 votes

How can I fasten cement board against a lumpy concrete foundation wall?

The thinnest possible solution is to straighten the wall with mortar and a mesh. Then apply thinset directly to the mortar. Prepare the surface of the wall by scraping any loose paint and scarring it. ...
Cheery's user avatar
  • 5,725
4 votes
Accepted

How much does a pallet of durock 1/4" cement board weigh?

1710 lbs, 1.9 psf for each 1/4" 3'x5' sheet. You're correct about 60 pieces per unit. Durock Spec Sheet Showing my math: 3' x 5' = 15 square feet 15 square feet x 1.9 pounds per square feet = 28.5 ...
Dotes's user avatar
  • 4,809
4 votes
Accepted

How to cut thin strips of Hardiebacker

After scoring, place the sheet on the floor as usual, then cover the thin strip with a stiff board or straight stud as long as the score line. Align one edge of the board with the score. Kneel, or ...
A. I. Breveleri's user avatar
4 votes
Accepted

Kitchen Backsplash: Drywall, Cement Board, or Both?

Existing drywall is fine. Back butter your tiles. If you use something like versabond you get incredible strength. On subway tile when it is still wet you need a lever to pull off a tile. As long ...
Fresh Codemonger's user avatar
4 votes
Accepted

Cement board or purple drywall for shower surround?

I tend to view this choice in terms of the overall project cost. There's a difference in price of materials, but on the complete project scale, the cost difference is minor. With tile, it's a trivial ...
Ecnerwal's user avatar
  • 215k
4 votes

Cement board or purple drywall for shower surround?

In a perfect world, using the purple drywall should be fine for a surround. The problem is you still have to cut the surround for your valves and shower head. You might want to install a grab bar at ...
JACK's user avatar
  • 80.6k
4 votes

Is blue drywall enough behind shower wall tiles?

I would not consider blueboard to be equal to DenShield. Have the contractor provide the proof in writing, or demand that the blueboard be replaced with Denshield. Also do not make any more payments ...
RMDman's user avatar
  • 29.3k
4 votes

How can I fasten cement board against a lumpy concrete foundation wall?

Grab your dust mask! Get a diamond cup (or two or three?) for your angle grinder and grind the walls flat. Heck, you will even gain that 1" of floor space due to removing the unevenness instead ...
FreeMan's user avatar
  • 47.3k
4 votes
Accepted

What to do about the gap between the tub and the studs?

Assuming that you don't own a table saw, Home Depot sells 5/16"×1-1/2" lath. That or you can use a circular saw to cut strips of whatever thickness of plywood that you need. You should ...
popham's user avatar
  • 10.4k
4 votes

Can You Paint & Texture Cement Board/Backerboard

Mud & sand it to make it smooth, and treat it like drywall from that point forward.
Ecnerwal's user avatar
  • 215k
3 votes
Accepted

How to join seams between hardiebacker and drywall in a corner?

Don't worry as much about the drywall mud. As you said, fibatape #4. Do that first. For #3, set your bead in drywall mud. Then, finish the drywall side in drywall mud and the upper side above the ...
NPM's user avatar
  • 2,021
3 votes

Can I use Kerdi Board instead of Cement Board to thinset natural stone tile?

All cement products contain silicates, from the sand use in the cement. It won't be breathable unless you create dust by cutting or breaking the panels. That being said, I don't see instructions for ...
Sean's user avatar
  • 1,659
3 votes

Can I place cement board over existing drywall in preparation for a natural stone?

Given that this if for inside application the first thing I would state is to follow the manufacture's instructions. Depending on the stone weight you will have different install methods. However... ...
DMoore's user avatar
  • 48.3k
3 votes
Accepted

Does the side of Hardibacker cement board really matter?

According to the James Hardie Website FAQ, either side is fine to use. However, they recommend smooth side to be up and nailed every 8" on center.
Jerry_Contrary's user avatar
3 votes

Accidental drywall mud over cement board

Thinset is approved for use over sheetrock - sheetrock typically has drywall compound on it. If you were using a large format tile with a specific thinset that wasn't approved for use over sheetrock ...
Fresh Codemonger's user avatar
3 votes

Cement Board versus Mold Resistant Drywall at Top of Bath Tub/Shower Surround

That is not a really wet location I would leave it, I just hope they used a setting type joint compound. This may be an opinion as others may say omg it must be replaced but in the 50’s and 60’s it ...
Ed Beal's user avatar
  • 103k
3 votes
Accepted

Are 1-1/4" screws enough for cement board if I shim the studs with 1/2" shims?

The 1-5/8 cement board screws are much better for this purpose, as they'll go through your 3/8" shims and still have 3/4" in the stud. Even if your shims are fastened securely to the studs ...
Fredric Shope's user avatar
3 votes

Is it ok to use drywall instead of cement board on a kitchen backsplash behind the cooktop, there is no running water in the area

Is it "OK" - yes, plenty of tile is installed on drywall (assuming you are planning to retile? If not, well, you don't even need a "backsplash as such.") Plenty of kitchens with ...
Ecnerwal's user avatar
  • 215k
3 votes

remove mortar + cement board? or self level ontop? Bathroom Floor

That mortar on the floor seems quite solid. You can just pour self-leveling mortar on top of it. It is the simplest way. Plus it will also keep the whole floor intact. Take care.
Meta_Alchemy's user avatar
  • 1,015
3 votes
Accepted

How do I install Hardie Siding (Fiber Cement Siding) to Cement Backer Board?

When in doubt, read the fussy manual. Applying James Hardie® Siding over Continuous Insulation and Non-Nailable Substrates Method 1: Applying Hardie® Siding Directly through C.I. and Non-Nailable ...
isherwood's user avatar
  • 138k
3 votes
Accepted

Damaged cement board while removing a chipped tile. Can I repair it?

Cut open the wall's surface from the other side and thinset a cement board patch over all of the fractured cement board. The patch should extend a good 6" to 12" over undamaged cement board ...
popham's user avatar
  • 10.4k
2 votes

How can I build up the hardibacker if it doesn't come flush with the tub

The Hardibacker or cement board should overlap the tub flange down to about ¼" to ½" above the tub itself. Then bring your tile down to around ⅛" from the tub and finally caulk that joint for a good ...
ArchonOSX's user avatar
  • 19.8k
2 votes

How can I build up the hardibacker if it doesn't come flush with the tub

If possible I would take down the hardibacker and furr out the studs the 1/4" or so. Even with tile over it the possibility of water getting behind the tub is high and it defeats the purpose of the ...
Steven's user avatar
  • 551
2 votes

Use cement board without plywood for outdoor kitchen

For a vertical application movement is a bigger concern that weight carrying ability. If the cement board is framed well (studs every foot) with no load I think it would be fine. For what it's worth:...
Sherwood Botsford's user avatar
2 votes

Can I cut up sheets of cement board and use it as wall shingles?

Cement board and fibercement siding (such as that from GAF or Hardie) are very different things. I'd never have considered cement board as an exterior product, especially in a climate with severe ...
isherwood's user avatar
  • 138k
2 votes

Playhouse to sauna conversion

No, you do not need to remove the drywall to install the sauna. However, you will need a foil barrier (to reflect the heat back into the sauna) installed over the drywall. I'd install insulation on ...
Lee Sam's user avatar
  • 23.2k
2 votes

How to cut thin strips of Hardiebacker

There is another way that doesn't require sawing. All you need are two 2x8s with a 1/2 inch plywood spacer between them at each end, joined securely with several 3" screws, so that there is a 1/2 ...
Hans's user avatar
  • 21
2 votes

Drywall/Cement board transition for a tub surround

I would ( and i do ) use denshield instead of cement board. It is much easier to use, you score it and break it just like Sheetrock. It is textured so you want to make sure you set it so it is just ...
Alaska Man's user avatar
  • 13.6k
2 votes

can I install cement backer board over plank subfloor

Virtually all brands specify minimum 5/8" plywood or OSB as a base. I have to say, if it was my house and there were significant challenges related to plywood installation (plank removal difficult, ...
Jimmy Fix-it's user avatar
  • 35.8k
2 votes
Accepted

How to correct burying cement board into shower pan concrete?

You can read my past answers that go into pretty big detail on how I do showers - and I have done a lot but there are no hard rules in creating a working/functional non-molding shower. Yes there are ...
DMoore's user avatar
  • 48.3k

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