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 ...
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4 votes
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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 ...
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  • 4,661
3 votes
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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 ...
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  • 1,954
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 ...
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  • 1,669
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... ...
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  • 46.2k
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.
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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 ...
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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 ...
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  • 98.3k
3 votes
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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 ...
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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 ...
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  • 137k
2 votes
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Tape or corner bead where Hardi meets Drywall?

I had a similar situation where the backer board extended a few inches past my planned tiling edge in my shower. After I had finished with the tile, I taped the joint and applied joint compound over ...
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  • 131
2 votes

Is this cement board / Sheetrock still ok to use in my bathroom?

As long as the cement board is solid with no large cracks it is useable. The stains may have occurred for any number of reasons. Also the cement board should be flat and even with no ridges. And do ...
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  • 10.8k
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 ...
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  • 19.4k
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 ...
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  • 541
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:...
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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 ...
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  • 106k
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 ...
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  • 22.6k
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 ...
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  • 21
2 votes

How to cut thin strips of Hardiebacker

You can use a circular saw. There is a blade for cement board, if it is just one cut or two you can sacrifice an old blade. it will dull very quickly. This will create copious amounts of dust, it ...
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  • 13.3k
2 votes
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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 ...
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  • 46.2k
2 votes

Taping or not unexposed wall joints

Taping creates a fire barrier if there ever happened to be a fire in your wall a non taped joint could be a problem.
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  • 98.3k
2 votes

Is cement board a better soundproofing material than 5/8 drywall?

The less dense material would be better for soundproofing, the 5/8" drywall. There's a lot that goes into soundproofing and there's even professions within the construction industry that specialize ...
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  • 636
2 votes

Epoxy over cementboard

Cement board isn't intended as a finished floor. It's not as dense as concrete. You'd find high heels and chair legs punching into it in short order, leaving you with a crumbly mess. Obviously you'd ...
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  • 106k
2 votes

Should the tiny gap between exterior window trim and the window housing be caulked?

Yes for sure. The caulk is rather important there more than anywhere else because water will run down those channels and rot out the window framing and window itself (rust if metal). I suggest ...
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  • 46.2k
2 votes

Cement board under cabinet with no tile

When I did my kitchen recently, I just laid the cement board wall-to-wall, because it wasn't worth it to cut the sheets where the base cabinets would go. Plus you get a bit of waterproofing too. Don'...
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  • 2,485
2 votes

Replacing old tile kitchen with wall

The backer board is usually screwed to the studs , just like the Sheetrock although some used to use nails back in the 70’s. The problem with demolition on this side of the wall is it can cause ...
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  • 98.3k
2 votes

Underlayment for using porcelain tile outdoors?

I have tiled a few concrete slabs and have never used anything but thinset, a membrane for a shower stall is great but for outside I believe it could have more problems than straight thinset, if you ...
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  • 98.3k
2 votes
Accepted

How should I transition between cement board floor and alcove tub?

I think you have a good plan except do not fill the gap with thinset, leave a small gap between the cement board and the tub and fill with caulk. You could apply some of the Mapei on the first few ...
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  • 13.3k
2 votes

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

The places where you really want the cement board are around the tub, in case the silicone caulk dies, that's where you get water infiltration (red arrows). Also the side opposite to the shower, ...
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  • 6,677
2 votes

Can I level basement floor with cement board and self-leveling cement?

start with mortar or fine concrete screed where there's a lot to fill and then use self leveling cement to finish. where the fill needed is more than 1/4" self-levening cement is best used second....
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  • 13.8k

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