Questions tagged [backer-board]

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Can you put Hardy backer board on top of Mapie self leveler plus?

I have already applied self leveler in my bathroom over brand new plywood subfloor. I have got Mixed opinions if I can use Hardy backer board on top of the self leveler.
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What should I use for a smooth surface wall board for quilting layout?

For purposes of laying out a quilting project, I want to use an approx 4' by 7' wall space. I have a large piece of thin fabric that is tacky on both sides. One side goes against the wall and stays ...
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Kitchen subfloor replacement

We purchased this home three years ago and have 18x18 ceramic tile in the kitchen and foyer that is cracking. I removed a portion to see what is going on and the old plywood definitely needs replaced. ...
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1 vote
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Stone tile flooring with acoustic sound reduction requirement in condo

We just closed on a new condo and want to replace some of the old carpet with stone tiles. However, the HOA has a sound reduction requirement where the floors must pass acoustic testing with 55 IIC or ...
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1 vote
1 answer
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How do I seal shower wall if no space for seam tape?

I had to remove a section of my shower wall for plumbing repairs. The wall is currently drywall. I want to fill the hole with Fiberock. I was unable to remove the tiles from the drywall, so I had ...
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Circular walk-in shower remodel- waterproofing windows and walls with purple board?

Thanks in advance for any insight you may be able to throw my way.. my in-laws are in the process of fixing a shower due to water damage. It is a circular walk-in shower with a vaulted cedar ceiling. ...
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1 answer
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HardieBacker with Hydrodefense very difficult to drill

I'm attaching a substrate onto my new shower wall. I'm using HardieBacker with HydroDefense as the substrate (it's the red kind). I was very careful to read the instructions, and I bought the ...
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Efficiently remove backer board screws

I am replacing kitchen tile with vinyl planks or engineered hardwood. After ripping out the backer board with tile, I am left with hundreds of screws, set every two inches in a rectangular grid. Is ...
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3 answers
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Can I use this blade to cut Hardy Side-paneling

Is the saw blade in the photo appropriate to cutout a window in HardyPanel? Wood paneling? https://www.homedepot.com/p/James-Hardie-HardiePanel-HZ10-5-16-in-x-48-in-x-96-in-Fiber-Cement-Sierra-8-...
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2 votes
1 answer
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Can you “re-use” Hardi Backer?

I installed Hardi Backer under a ceramic tile floor several years back. We are planning a remodel soon. Can I remove the tile, clean up the backer board, and install new tile? That stuff has a million ...
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3 answers
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What screws should I use to screw Wedi boards into wood studs using Wedi washers?

I'm building a waterproof bath area with shower head. I have 12.5mm Wedi tile backer board and Wedi washers, for fixing the board onto wood studs. I was hoping to buy "Wedi screws" but the ...
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-2 votes
1 answer
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Kerdi Membrane over cement backerboard

When installing Schluter Kerdi Membrane over cement backerboard: Should I use Alkali Resistant Mesh Tape and thinset on the seams of the backer board (for long term durability to prevent each board ...
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Densheilds project progress with leveling issue

I have installed Densheilds tile backer boards as showed in the pictures and I noticed on the big board (5'x5') that at the corner there is a light gap (not leveled.) I'm going to install a 12"X24" ...
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Densheild boards and 12"X24" tile

Can Densheild boards hold a 12"X24" porcelain tile? ( the tiles are for shower walls ). Someone told me that the top layer of the boards are paper and installing the tiles on the higher area with ...
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1 vote
2 answers
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How do I attach natural stone to backerboard in a shower

I am making a custom shower, planning to cut my own stone slabs from stones found in my area. They will be granite, quartz, some others, that I cut with my own saw. I'm wondering how to attach the ...
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5 votes
5 answers
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Can I install heat mat and backer board over cork flooring?

I am installing a new bathroom floor. I plan on getting an electric underfloor heating mat, 2 backer boards for under the heating, screed the mat and tile over this. My question is can I place the ...
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1 vote
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Recommended joint compound for wall mounted tile backer boards

I’ve installed pro warm tile backer boards on my bathroom walls. What’s the recommended way to fill the joints before tiling over? The Marmox guides say to use waterproof tape or joint compound. I ...
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2 answers
383 views

What backer board for Kohler Choreograph in the shower - osb or greenboard?

I want to install Kohler Choreograph sheets in my shower over tub. It currently has a full fiberglass unit. Should I use osb, greenboard, or possibly cement board, and do these have to be water-...
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1 vote
2 answers
634 views

Can walls be built on top of backer board?

I am building a laundry room with a closet. I could frame the walls and then add backer board. However, it would be easier to apply backer board to the entire room and then frame the closet on top of ...
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Anchoring through shower tile & beyond

The attempted shower seat I recently tried to install a shower seat in my shower. It came with an aluminum wall bracket, and is anchored with 5 approximately 3'' screws inserted into typical plastic ...
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1 vote
1 answer
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How do I keep this old shower pan water tight

I have my shower room down to the studs. It has an old terrazzo shower pan which I hope to reuse. It had an inch high metal (lead?) edging around it. It was fairly decayed so most of it has broken ...
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1 answer
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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 ...
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2 votes
1 answer
441 views

Replacing particle board underlayment and building up floor height to lay tile

We are in the middle of updating our guest bathroom and while removing the vinyl flooring we found that it was sitting on a 1/2" particle board underlayment. Given that particle board in a wet ...
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1 vote
1 answer
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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 ...
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2 votes
3 answers
1k views

Is 15/32" Plywood okay for Subfloor under tile?

Is 15/32" plywood thick enough to be used as a subfloor under tile combined with a 1/4" hardiebacker board? The joists underneath are 2x8s that are 16" apart on center and only 4' long.
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Not level where drywall and backer board meet

In process of replacing a one piece fiberglass stall shower. Have removed it and put up backer board but line where backer board meets drywall is not level. I'd say drywall is maybe as much as 1/2" ...
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2 votes
1 answer
5k views

Removing bathroom tile from cement backerboard

I started removing what I believe to be 12x12 ceramic tiles which I’ve found out are adhered to a concrete backerboard which is adhered to a plywood subfloor. I’ve scoured the internet and have found ...
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2 votes
1 answer
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Jigsaw Blade for Hardibacker

I am cutting some 1/2" Hardibacker into some 2" x 32" sections. I tried using a 6 TPI wood jigsaw blade but the blades are not lasting very long. Does anyone know if a diamond tipped or carbide ...
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2 votes
1 answer
858 views

Would you put heavy tile floor-to-ceiling over this "blueboard"?

We have an upstairs 9x5 bathroom in wooden construction. Ceiling height is 8 feet. Our contractor used a combination of "GoBoard" (concrete-type board) for the shower area, and "blueboard" for the ...
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2 votes
2 answers
4k views

Do I need to lay plywood before I lay down cementboard?

I'm remodeling my Bathroom and I had to lay down new 2 x 6" T&G boards. I plan to lay tile so I bought Hardiebacker (cement backer board). I was planning on laying down the backer board, lay ...
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Possible application to backboard in shower

I had a mild mold issue and as I tore the bottom of the window frame (in the middle of the back shower wall) I found more and more damp wood. Noticing there was plywood instead of cement board. I tore ...
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2 answers
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Backer board bowing on 24" inch steel studs for rock ledger panel installation

I wanted to screw Hardie backer board (.42") over my drywall to the steel studs to adhere 6" x 24" x1" stone ledger panels using polymer modified thin-set, floor to ceiling is 12'. Problem is that ...
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How should I prepare subfloor for backerboard installation in bathroom tiling project?

A couple questions about installing tile in my second floor powder room. There is tile in our kitchen on the same floor. I assume because of the kitchen tile on the same floor that my engineered ...
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Backer Boards Around Bathtub [duplicate]

I am remodeling a bathroom and I am wondering whether or not I am to cut the backerboard so that it runs behind the tub or just up to the edge of the tub. Whichever is the answer I'd appreciate a ...
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1 answer
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what to do where hardibacker meets drywall?

Went to remove old tile from laundry room sink backsplash and it was placed onto textured and painted wall(believe it was an after thought of previous home owner). As the tile was removed it pulled ...
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2 votes
2 answers
4k views

How to flatten a plywood subfloor for tile?

I've got a 5/8" plywood subfloor in my bathroom. I'm prepping to install 1/4" Hardiebacker on top of that so I can install 12x24" marble tiles. In checking for flatness, I noticed there is a 1/2" drop ...
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2 votes
3 answers
9k views

Retiling a tub surround, not sure how to shim it

I just ripped out the original tile and backer board on a secondary bathroom in my home and now it's time to put the new stuff up and I'm a bit stumped. The backer board was originally installed on ...
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1 vote
3 answers
5k views

Do I need a vapor barrier on tub surround with 1 external wall?

I know variations of this question have been asked dozens times and it seems like there is no real consensus. Each post or website I look at seems to advocate something different. I understand that ...
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1 answer
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Seaming HardiBacker to Drywall

I'm rebuilding my shower and using HardiBacker (1/2" thickness) in that space. I've then got normal green-board drywall that I'll be transitioning to. I figure that I'll tile up to the edge of the ...
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3 votes
1 answer
177 views

Securing plywood underlayment to timber sub-floor

I am laying 12mm plywood on existing timber flooring (before laying Hardiebacker board & ceramic tiles). Apart from screwing the ply to the sub-floor, should I also use grab adhesive or thinset ...
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1 vote
3 answers
2k views

Nailing down hardibacker on walls

I'm in the middle of a bathroom renovation, which will be tiled with large format porcelain tiles on both the floor and walls. I put 1/4" HardiBacker on the floor, laid on top of a bed of thinset as ...
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3 votes
2 answers
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Tiling on slab or backer board

I have recently replaced the carpet in one room. I intentionally left part of the room uncarpeted that is in front of small vanity. I plan to tile it. Off to the side of the section is a bathroom ...
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2 votes
2 answers
323 views

How should I remove tiles and backer board from my bathroom?

I have a pink tiled bathroom and want to remove them. The tiles come up fairly easy but some do not and the backer board is intact mostly. What is the best way to remove the tiles and backer board if ...
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2 votes
2 answers
4k views

Should I redo this wall to avoid a mold sandwich?

Hello Internet DIYers! I'm in the process of remodeling my bathroom and I've just realized something I might have done wrong around my shower. One of the two walls of the shower is an exterior wall,...
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1 vote
1 answer
346 views

Tile Shower Surround—Cement Backerboard Location?

I'm in the process of remodeling an old bathroom and I'm coming up on the point where I'll need to drywall/install backer-board. I've been reading up on this and I just want to make sure I have my ...
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4 answers
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Is it possible to install backer-board on a curved surface?

We are replacing the carpet around our Heart Shaped tub with tile. For better waterproofing we are using cement board on the top surface. The tub is sunk in the concrete floor with a 7" step up to ...
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14 votes
1 answer
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How do I correctly install ceramic floor tile?

How do I correctly install ceramic floor tile? There's lots of talk about using backerboard and waterproofing membranes, what an acceptable floor deflection is, different grout and thinset additives, ...
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2 votes
1 answer
987 views

Where exactly does backer board need to reside in a bathroom?

I'm a little confused on where exactly backer board needs to reside in a bathroom. I know it needs to immediately cover the walls that the shower/bathtub face, but what about the rest of the walls in ...
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When installing backer board for wall tiles, do the screws need to be absolutely flush or even pushed into the backer?

I'm asking because some screws will not go in fully flush. But I'm thinking the layer of thinset then tile will surely cover any screws that aren't flush, so tiles won't 'pop' out.
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CertainTeed DiamondBack- Waterproofing needed for tile?

I picked up some DiamondBack CBU to tile a shower enclosure, as it seems like it would be a lot easier to work with than Hardibacker (I can't cut the stuff without making a huge dusty mess, so if you ...
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