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Questions tagged [cement-board]

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0answers
29 views

What to use as void filler behind between shower's studs & cement underlayment board?

I am in the middle of remodeling my bathtub/shower surround. For my tile underlayment I chose hardibacker, and the appropriate hardi screws. A youtube video series that I am using as my tutorial is ...
2
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1answer
54 views

Does the side of Hardibacker cement board really matter?

I saw somewhere that the rough side should face out in case of thinset and smooth in case of mastic. I hung some boards randomly before knowing so some smooth sides are facing out and I'll be using ...
2
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0answers
126 views

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

Cement board has a higher density than 5/8 drywall. It also probably, and this is just a guess, probably has a lower resonance as well (being cement), so less sound should get through. 5/8" drywall ...
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0answers
26 views

How to build up subfloor to 1 3/8" finished height with tile?

My 1960's bathroom floor is down to the 3/4" deck boards that are attached at a 45 degree angle to the joists. There was about 1-1/4" of lath and mortar on these boards for almost 60 years. All the ...
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2answers
38 views

Taping or not unexposed wall joints

I have some joints between drywall and drywall and also drywall and cementboard that will not be exposed because they are behind cabinets. Do I still need to tape them together? Does taping provide ...
1
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1answer
49 views

Delineation between drywall and cementboard

This is the sink/dishwasher bay for my basement apartment. There will be a bottom and a top cabinet, corresponding approximately to below and above the green line. I want to put tile on the wall ...
1
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1answer
589 views

What is the best board to install behind a glue up tub surround?

I would think it would make sense to install a waterproof board like GoBoard or DensShield behind a fiberglass tub surround, but I can’t find an adhesive that specifically states that it is compatible ...
1
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1answer
50 views

What size should I cut my backer board?

I am hanging backer board for my shower and have a 5'x 3'2" tall space I need to cover. The backer board comes in 5' x 3' sheets. My question is should I Use one full sheet and then cut another down ...
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2answers
445 views

How to Fill Gaps Between Hardibacker and Drywall?

Trying to figure this out. I am going to be using Hardibacker for wet areas around the tub-shower above the acrylic tub/shower surround, and drywall for the rest of the room. There will be no tile. ...
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3answers
268 views

How to correct burying cement board into shower pan concrete?

I made the big mistake of burying my cement board (Hardiebacker) into the concrete of my shower pan. I now understand the risks with water wicking up into my concrete boards, and causing a moisture/...
1
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1answer
1k views

Patch Hole In HardiPlank Fiber Cement Siding

I have a hole in the siding of my home. The siding is HardiPlank fiber cement. The hole size (diameter) is that of a cable line. A cable line was run through the siding when the previous home owners ...
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1answer
1k views

Can cement backer board be used to support bluestone or slate outdoor raised patio?

We are designing a multi-level stone patio. To exit the kitchen directly onto the stone patio, the highest part of that patio would be 12 inches above the foundation. The next level would be flush ...
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2answers
633 views

Do I need to install cement backer board on the wall above a tile shower surround?

We removed a tub wall surround and want to replace it with tile. We don't plan to tile to the ceiling. Can we cut out only the drywall where the tub wall was and replace that with cement backer ...
3
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1answer
2k views

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

I am trying to figure out if I will need to make separate trips for my thinset mortar and cement board to keep within the safe operating limits of my vehicle's maximum load weight. I plan on buying ...
0
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1answer
411 views

Mudding over cement board in shower

thanks in advance for help. I'm trying to finish a shower that was in progress from a crew until we had to send them packing with the job unfinished. They installed a shower stall, with tile up the ...
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2answers
4k views

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

I'm tackling a full bathroom drywall install for the first time and trying to make sure I don't make any unfixable mistakes. I am at the taping/mudding stage. Based on my understanding, I can use ...
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0answers
56 views

Is subfloor / underlayment for tile different for a small area

Normally for plank subfloor one is supposed to add 1/2 inch of plywood plus cement backer board for underlayment. For a small area say 4 feet by four feet is all of this necessary?
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3answers
5k views

can I install cement backer board over plank subfloor

I have old plank subfloor installed at a 45 degree angle to the floor joists. How should I install cbu(cement backer board) on top of this for a tile installation? The entire area is approximately ...
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2answers
1k views

Drywall/Cement board transition for a tub surround

I am remodeling my bathroom, and intend to replace my bathtub and surround. I have started ripping the 5/8 in. drywall from around the bathtub, and I intend to install a cement board and tile all the ...
0
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1answer
333 views

broken cement board corner

i installed a cement board with a badly crushed corner. how should i proceed? This is for a shower it will be waterproofed with redguard (or equivalent). There is studs behind the screws on the ...
1
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1answer
78 views

tearing out tub/shower surround

I live in Vancouver, and my condo is about 25 years old. A couple of the tiles in the tub/shower surround are cracked, and I know that when I take them off I'm going to find soggy drywall. I'm ...
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2answers
1k views

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

I've got these split face natural stones that come in 24 x 6 panels, and I was going to install them onto Cement Board using thinset. Checking the boards out (Permabase Plus), they contain silicates ...
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0answers
115 views

how to extend wall board to window for narrower trim

We installed cement board on a wall to prep it for tiling. The gap between the window and the outline of the rough opening is anywhere between 3" to 3.5" (it's inconsistent). I want to install ...
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0answers
1k views

joint between cement board and existing drywall not flush — how to treat?

We're redoing a wall in our kitchen because it was too uneven to lay our countertop-to-ceiling tile backsplash. The base cabinets and countertops have been installed already, and there are no upper ...
0
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1answer
307 views

Playhouse to sauna conversion

I am looking at converting my kids playhouse to a wood burning sauna. It sits about 6' off the ground on 4x4 treated posts. I have two questions abut this: The floor is 5/8" treated plywood. I was ...
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4answers
2k views

How to cut thin strips of Hardiebacker

I started with Hardiebacker for the first time today for the wall of a shower, and was greatly impressed by the ease of the score-and-snap method for getting the large pieces I need. However, I also ...
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0answers
85 views

Why would there be a wooden board under cement board in tub alcove?

I'm removing the cement board to make tiling easier. I've so far removed two walls. The third wall however is the one with the shower head and controls on it. I rubbed away a bit of cement board (to ...
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0answers
511 views

Apply stucco directly to cement board

I'm fixing stucco on an old house and it appears as though they literally just added stucco onto cement board with asphalt kraft paper in between. I have to remove a piece to add in new cement board ...
0
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2answers
138 views

Installing Cement Board 16 inches on center

I'm going to be using cement board for the walls of my walk-in shower. My shower is framed 16 inches on center. It appears that most cement board measures 5 ft. x 3 ft. Does this mean I'm going to ...
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2answers
4k views

Use cement board without plywood for outdoor kitchen

For outdoor kitchen, do I need to use plywood on top of the framing, then cement board? Or can I put cement board directly mounting to the frame like this? Source: http://www.homedit.com/how-to-build-...
1
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1answer
149 views

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

I have seen lots of great fiber cement board shingled projects popping up around my neighborhood lately, and would like to do the same for my garage. Currently it is done in vinyl which I absolutely ...
1
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1answer
148 views

Properly waterproofing a shower area sharing a living room wall

My parents (live in Belgium) have a shower that has ceramic tile mounted directly on the plaster wall over cement blocks, beforehand the tile installer painted the wall with what was supposed to be a "...
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2answers
733 views

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

So I have put hardibacker on the walls around the tub and on one of the three walls the wall is not flush with the tub flange (See pic below). Not sure how to make the wall a bit thicker to go over ...
3
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1answer
14k views

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

Can I place cement board over existing drywall in preparation for a natural stone (quite heavy)installation in my living room? If it's possible, is it okay for the cement board screws to pass over ...
0
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1answer
202 views

Vaper barrier for kerdi lined shower walls

I'm using kerdi membrane for my shower area with cement backerboard. Should I still add a layer of plastic vapor barrier behind the backerboard. Normally that's required to prevent the studs and ...
2
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2answers
329 views

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

Our builders are putting up cement board in the bathroom, and we noticed the pieces on the left have some stains, they look very different to the rest that looks the same as the ones on the right of ...
0
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1answer
966 views

How to attach closet flange to sub floor

I recently removed my toilet and saw that a couple tiles underneath it were cracked, and on removing those tiles found the plywood beneath the tiles had rotted out. So I removed any tiles under the ...
2
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2answers
13k views

Tape or corner bead where Hardi meets Drywall?

I need to finish the outside corner above the shower alcove. The shower ceiling is hardibacker and the wall outside the shower is drywall. Where these two meet, what is the proper way to finish it so ...
0
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3answers
18k views

When taping cement board do I need to tape at the walls?

I am preparing to put down cement board for a bathroom tile install. I understand, I need to tape at the seams. Should I tape the edges where the cement board meets the drywall or the tub as well? ...
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3answers
33k views

How do I remove Cement Board that has been screwed in and is bonded to wood subfloor with thinset?

I am in the process of purchasing a townhome and I am looking to tear up the existing 12" ceramic tile that covers the entire main level... an area close to 600 sq. ft. to make way for laminate ...
2
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1answer
5k views

What backer board should I use in shower ceiling?

I'm tiling my shower up to about 7' and the rest of the shower and ceiling will simply be painted. What material should I use on those? I am using RedGard as my waterproofing method so there will not ...
3
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3answers
5k views

What should I do about excess flex in cement board that will be behind tile?

This is around a tub/shower. The studs are spaced at 24in, cement board is 1/2in. We're surprised at how much flex there is between the sheets of cement board. I'm worried that tiles may pop off. We'...
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1answer
9k views

Is this Asbestos?

I've found this flat panel in my garden (1 x 1.5 meters, thickness approximately 0.5 cm): Is this Asbestos? I'm in Bali where asbestos cement is still widely used. It's not friable.
3
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4answers
13k views

Can you use drywall mud on hardiboard?

I am looking at painting hardiboard or mudding and then painting. Is that OK?
7
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2answers
62k views

What cement board can I use for an outdoor bbq?

So I've built a metal frame that is going to be used as my outdoor bbq. I am ready to install siding on it and I was told to use HardiBacker. I googled it and apparently it isn't for use outdoors. ...
7
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1answer
26k views

What's the best option for cutting cement siding?

I bought some of James Hardie Trim made of fiber cement and I'm wondering what the best option is for cutting it is. Home Depot refuses to cut it because it ruins their saw blades. Scoring this stuff ...
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2answers
774 views

How do I apply tile to a small wood platform?

I have done some research and mostly I have found that putting cement board on top of plywood is the general answer to tile on wood, but it doesn't really fit my situation as much as I had hoped... I ...
2
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2answers
492 views

How do I go about making 1“ and 2” thick “boards” for concrete furniture?

I have designed a cement feeder for hogs, for my hobby sized farm. It is generally based around a professional one we already had. I have planned on different parts of it being 2 inch, 1.5 inch, and ...
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1answer
944 views

How can I smooth a seam between cement board?

I have a joint between two sheets of cement board that forms a small ridge elevated maybe 1/8" relative to the centers of either board. I was wondering if extra thinset on both sides can be used to ...
2
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2answers
2k views

How can I prepare a wall for reasonably heavy tiles in a shower area?

I'm renovating a bathroom in my apartment and would like to fit 12mm Travertine tiles in a bath/shower area. For most of the walls in this area I have used cement board (Hardibacker 500) attached ...