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Taping a drywall and Redgard’d cement board joint

I’m renovating a bathroom and I applied RedGard to my shower’s cement board. I decided to build out a wall and now have new drywall next to the RedGard’d cement board. Is too late to tape the joints ...
Rinnzky 's user avatar
0 votes
2 answers
54 views

Can You Paint & Texture Cement Board/Backerboard

During our remodel of our bathroom shower area, we cut out the existing wall tile and some of the textured drywall around the edges. The person doing the new wall tile is going to put new cement board ...
ptownbro's user avatar
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1 answer
54 views

What's the easiest way to remove Hardie board that's been shot down to cement flooring with a Hilti gun or the hilty gun

In a garage they shot down the Hardy board with the Hilton gun directly to the cement and now the new owners wanted up so they can repair the garage floor.
Shawn O'Neil's user avatar
2 votes
1 answer
451 views

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

I am renovating my bathroom and noticed a tile was chipped after it was installed. I carefully chiseled the tile off the wall but a thin layer of cement board came off with it, see pic below. I used 1/...
Niko's user avatar
  • 387
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0 answers
26 views

Piece of cement siding came off the house

It is January, is it too cold to reinstall piece? Also, noticed a hole on the wall/insulation. Having issues with rodents. May be the issue. How to fix the hole in insulation before reinstall of ...
MommaC's user avatar
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0 votes
1 answer
119 views

Had to shim out my tub surround walls. How to transition from tile to the drywall?

I had to shim the studs for the cement board (to install the cement board over the tub lip). Now I am left with a gap between the cement board and the drywall. On the right hand wall, The gap from the ...
Niko's user avatar
  • 387
0 votes
2 answers
125 views

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

I had a plumber help me install the bathtub in my bathroom today. Next step is to install the cement board. When facing the tub directly, The tub butts right up to the studs on the back (long side) of ...
Niko's user avatar
  • 387
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2 answers
182 views

How smooth does the subfloor need to be before installing cement board for tiling? [closed]

I have removed the previous tile and cement board from the bathroom. I knocked down all the major ridges and bumps from leftover thinset on the subfloor. What remains is a very thin layer on thinset ...
Niko's user avatar
  • 387
0 votes
1 answer
63 views

Is this thick mortar? Can i patch it and tile over it?

This was what was under the tile in my bathroom. Probably from the 50s. I think it is thick mortar? It is crumbly in places. I don't want to demo the entire thing, I'd have to hire someone to do it. ...
Sarah's user avatar
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0 votes
1 answer
75 views

What tile backing material can be embedded in concrete shower pan?

As in title. I want to glue and screw the backer board into the walls down to the slab before pouring the shower pan in a redguard shower, as I have about 1/2" spare space between the wall I'm ...
slowlygoingcrazy's user avatar
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2 answers
183 views

Do you see any concerns with this shower installation?

I am currently getting a shower redone after the last one had a leak in the base. The contractor has put up the cement board on the walls, and then mistakenly placed tile on the floor instead of the ...
halppls's user avatar
0 votes
1 answer
110 views

Have my tradies laid and fixed the drywall and flooring correctly?

I'm based in Tasmania, Australia. Bathroom and laundry reno in the works. They’ve been great so far - removed a wall, replaced floor joists, and I’ve felt respected and listened to but my tradespeople ...
bee's user avatar
  • 13
0 votes
1 answer
54 views

Can concret board be used as flooring board on an upper floor?

Does concrete board have the strength to be like flooring board spanning on joist or rafters as a second floor. That is not setting on solid ground. I think it can’t hold constant walking weight and ...
Vimla Ramsumair's user avatar
1 vote
2 answers
168 views

If using glue on shower panels instead of tile, how do you cover and seal the 1/4 inch gap between cement board and tub flange

I know cement board is installed about 1/4 inch above tub flange. The tile will cover gap. But if we aren’t using tile and just using the thin glue on panels?
Michael Reed's user avatar
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1 answer
85 views

Is 3/4" OSB, 1/2" plywood and 1/4" cement board adequate for ceramic tile?

I’m replacing a sink base cabinet that’s seen damage through the 3/4 ply underlayment, but the 3/4 OSB subfloor underneath might still be in good shape due to a vapor barrier sandwiched in between. We’...
Jack Anton's user avatar
0 votes
1 answer
23 views

How to get tile off of cement board in modular home

We have a modular home. We are attempting to remodel one of our bathrooms. The trouble is, we can not get the tile off the cement board. My husband states if we take the cement board off the wall we ...
Shannon Hardin's user avatar
2 votes
5 answers
2k views

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

I’m building an ambitious wet room style shower/bath in a 1911 basement. It happens to be in a corner with 7’ concrete walls on both sides. I need cement board on all sides, top, and bottom. I can’t ...
Jeremy P. Beasley's user avatar
1 vote
1 answer
406 views

Treated Lumber for Bathroom Half walls?

We are doing a bathroom remodel of a Florida home built in 1995. For the walls in the tub area, they used treated lumber along the concrete slab and regular 2X4 for the wall frames. We have a large ...
Kevin's user avatar
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0 answers
193 views

Is this asbestos cement board?

I accidentally broke this board in my store room, as I thought it is cardboard or gyprock as it’s already had a rough structure around it. My house was complete built in 1990. And I notice gyprock ...
Thomas Brown's user avatar
0 votes
1 answer
112 views

How to lay cement board over a small area

Hi I need to tile a small area 0.85m x 0.9m. I have laid 18mm ply over the original floor board. I now need to add cement board over it to tile. Which is the best option for laying down the cement ...
user2718378's user avatar
1 vote
2 answers
2k views

Is blue drywall enough behind shower wall tiles? [duplicate]

We live in Texas. My builder Highland homes just used blue drywall that too just till 12 ft for shower walls. No cement board between tiles and blue drywall.I asked him and he says everything is ...
Mahesh's user avatar
  • 11
0 votes
1 answer
318 views

Using adhesive to attach Durock to subfloor?

Durock's official installation guide says that using adhesive with a 5/8" v-notched trowel is a possible means of laminating the board to the subfloor: However I'm not certain which adhesive to ...
cam.b's user avatar
  • 5
0 votes
1 answer
753 views

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

I'm building a BBQ Island that will be framed in steel studs with cement backer board. My wife is interested in having me install Hardie Siding (technically Hardie Square Channel Siding) to finish the ...
Richard's user avatar
  • 107
2 votes
1 answer
7k views

How should cement board interface with a shower pan?

I will be building up a shower pan using the Oatey Perfect Slope pre-slope system, a 40 mil liner. and then building up a dry pack mortar bed on top of the liner. My question is what is the best ...
5000fingers's user avatar
0 votes
3 answers
5k views

Cement board or purple drywall for shower surround?

I see cement board is reccomended for shower areas and not purple drywall, pretty much everywhere. However, in pretty much all those cases they are talking about where the shower area will be tiled. ...
Kevinicus's user avatar
2 votes
4 answers
7k views

Kitchen Backsplash: Drywall, Cement Board, or Both?

Starting to think about next steps in this meandering kitchen remodel project we started during quarantine. I have the new cabinetry and appliances in and am starting to think about doing the ...
Chris O's user avatar
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0 votes
2 answers
160 views

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

I have some mortar on a cement board on my bathroom floor it seems. I want to put luxury vinyl over this. Is my best bet removing the mortar + cement board and then redoing that process? or using some ...
excelguy's user avatar
  • 101
1 vote
0 answers
203 views

Shorter Screws for Hardie Board

The floating (unattached to subfloor) hearth I am building for my wood stove is going to be constructed in this order: 1/2 plywood Layer of thinset 1/4 Hardie board Thinset Tiles The recommended ...
jhickok's user avatar
  • 203
1 vote
1 answer
497 views

In what order should I install backerboard, a mortar skim coat, and liquid waterproofing?

So, we bought a house with the intention of doing most of the finishing levels of renovation ourselves and hiring to have structural work done. The contractor put up cement board after repairing some ...
user2934942's user avatar
0 votes
1 answer
4k views

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

I recently had old tile backsplash removed down to the studs. Is it ok to use drywall instead of cement board on a kitchen backsplash behind the cook top, there is no running water in the area, the ...
Xylocarpus's user avatar
0 votes
1 answer
147 views

Can you use waterproof membrane to make the thinset adhere to the shower base

Most the procedures I have seen show how that you tape the join between cement board and the shower base and then you apply thinset over that to the point that the thinset is flush with the cement ...
MiniMe's user avatar
  • 3,402
0 votes
1 answer
158 views

Installing fiberglass fabric before the second layer of waterproof membrane?

In this video the guy is installing a fiber glass fabric before the second layer of insulation. I think I have seen something similar in the Kerdi videos. Is this something I should use with cement ...
MiniMe's user avatar
  • 3,402
0 votes
2 answers
2k views

Partially cracked cement board for bathroom corner Should I use it or replace it?

Let me start by saying that cement board is the biggest piece of .... invented by the construction industry. I do not know when this cracked but it developed by repeated manipulations of the biggest ...
MiniMe's user avatar
  • 3,402
0 votes
0 answers
284 views

What should I use to fill in a gap created behind cement boards after making the wall plumb?

Because I had to plumb a wall I had to sister the studs and that left me with two gaps in the corner like in the picture below. One corner is cement board(E) with existing cement board(D) , the other ...
MiniMe's user avatar
  • 3,402
2 votes
1 answer
134 views

How to ensure a Cement board wall that is only supported on the floor (without ceiling fixing) is stable?

I have a client that is requesting to construct a 1.8m (6ft) high wall around the back entrance of an apartment. This wall will be in a U-shape (Plan wise) with 2m (6ft) length sides and 5m(16ft) ...
Adam's user avatar
  • 21
1 vote
0 answers
269 views

Transitioning from cement board to drywall on a corner -what options do I have?

In the diagram below I need to transition from cement board to drywall (on the edge marked with red) Do I need anything special for this? That outside corner will be covered in tiles as the ...
MiniMe's user avatar
  • 3,402
1 vote
1 answer
629 views

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

Due to an offset between the plumbing and the shower drain I need to float the wall on the short side of the shower base with like 3/4-1/2" so I am using top to bottom shims. I am not sure if the ...
MiniMe's user avatar
  • 3,402
0 votes
1 answer
863 views

Hardietrim/fiber cement for window trim on stucco

I have some leftover hardietrim from a side of a wall we accented with hardieplank. The rest of our house is stuccoed. We'd like to accent our windows that are on these stucco walls with trim. In lieu ...
Harryhermit's user avatar
1 vote
1 answer
2k views

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

I have about a 1" height difference on my concrete basement floor. My understanding this was for drainage in case of flooding. I have a wall in the way of where anything could potentially drain ...
Joe Phillips's user avatar
  • 2,266
1 vote
2 answers
5k views

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

The drywall installers ran short of cement board, so they used a small piece of mold resistant drywall at the top of the wall where the shower head is located (see upper right of first picture). I ...
Matthew Rankin's user avatar
1 vote
1 answer
850 views

Attach stone veneer evenly to irregularly shaped foundation

I'm planning to attach stone or stone veneer to the bottom 2–3' of my house. At the front of my house, the poured concrete foundation is about 3' tall. Halfway from the front (toward the back), the ...
Matthew's user avatar
  • 135
0 votes
0 answers
266 views

waterproof shower: waterproof pan or not?

I have a question about waterproofing our shower. We have a pre-slope, then the PVC liner, then the final mud bed. We are going to use the Aquadefense liquid waterproof membrane. We installed our ...
Laurie Wisecup's user avatar
0 votes
0 answers
78 views

Installed Hardie board with tin roof

Installed Hardie board, silver side down as ceiling with tin applied as roof. Can this type of application withstand being the roof/ceiling in an outdoor kitchen with no side walls?
Michelle's user avatar
0 votes
0 answers
33 views

How to finish joint of cement board

When cement board meets a block is expanding metal sufficient to put over the joint to stop it cracking before I scratch coat? And do I need to put scrim on the joints of the cement board as well as ...
Brian Baby's user avatar
0 votes
1 answer
2k views

Proper way to repair old plasterboard walls?

my basic question is: what is the proper material and method for repairing defects on the walls in my old house? To give context, I am in Virginia, United States and the house is a concrete block ...
thkemp's user avatar
  • 101
-1 votes
2 answers
5k views

Best way to bore a hole in Hardieplank exterior cement board

I need to drill through Hardieplank cement fiber board for a 1” PVC irrigation pipe. Common bi-metal hole saws will be dulled from even a single hole and likely wouldn’t even complete the hole. ...
Ethan's user avatar
  • 9
1 vote
1 answer
2k views

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

Remodeling a bathroom and about to put in the floor. I have a plywood subfloor, and I'm about to install 1/2-in cement board on top, bedded in modified thinset spread with a quarter inch notched ...
Uncle Woody's user avatar
0 votes
1 answer
1k views

What are your drywall/cement board/framing flatness tolerances for tile supporting walls?

What are your drywall/cement board/framing flatness tolerances for tile supporting walls? I am rebuilding half of a frame and it is a challenge to bring all the studs in the same plane. I do know ...
MiniMe's user avatar
  • 3,402
0 votes
1 answer
82 views

How do steel studs compare to traditional lumber in holding strength? [closed]

How can steel studs possibly compare to traditional lumber in holding strength? The fasteners will at best engage with a minuscule amount of metal of X wall thickness and then break through into empty ...
John Kowski's user avatar
0 votes
0 answers
75 views

What is this under the backerboard?

I am currently working on demoing our kitchen and am not sure how to proceed. I recently did our bathroom and for the floor I left the old backerboard, chiseled remaining thinset, applied a self-...
brosquad's user avatar