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9 votes

Can I install heat mat and backer board over cork flooring?

When I am redoing a bathroom and adding the needed backer board to a subfloor assembly, I would remove all existing finish floors no matter how many to get back down to the original subfloor. Then ...
Jack's user avatar
  • 35.6k
5 votes

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

If those T&G boards are your subfloor, you'll be fine putting the cementboard panels right over them. Just screw them down to the wood subflooring with plenty of screws; don't use thinset for that....
iLikeDirt's user avatar
  • 12.6k
4 votes

How do I attach natural stone to backerboard in a shower

Normally the stone is applied directly to the backer board once the pieces are set a grout is used between the stones (today I would recommend epoxy grout). After grout a sealer can be used , I have ...
Ed Beal's user avatar
  • 103k
3 votes

Can I install heat mat and backer board over cork flooring?

I've never had to do this (install tile over cork), but I think you need to remove the cork. Backer/cement boards needs to be firmly fastened to the sub-floor. Any kind of softness, give, or "...
SteveSh's user avatar
  • 6,912
2 votes

Backer board bowing on 24" inch steel studs for rock ledger panel installation

This question is either subjective (based on opinion and personal standards of quality) or is a warranty issue. In either case it's probably off-topic. That said, here are my thoughts. Yes, adhering ...
isherwood's user avatar
  • 140k
2 votes

How should I prepare subfloor for backerboard installation in bathroom tiling project?

If you have single-layer plywood, you might want to consider Schluter Ditra membrane. It serves as crack isolation and waterproofing: Designed specifically for ceramic tile and dimension stone ...
Tim B's user avatar
  • 2,469
2 votes

How should I prepare subfloor for backerboard installation in bathroom tiling project?

1) Safe assumption. Your floor trusses are carrying the load of the entire room. A little extra tile weight isn't going to matter. 2) You want a relatively level surface but the thinset itself ...
The Evil Greebo's user avatar
2 votes

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

Plywood would be a very good choice. You should consult the ditra literature for your particular joist spacing, however, generally the bare minimum thickness for plywood/T&G subfloor under ditra ...
MG Funs's user avatar
  • 41
2 votes

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

Kohler recommends water resistant drywall or green board. Make sure you have blocking at the height needed if installing things like hand rails.
Ed Beal's user avatar
  • 103k
2 votes

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

According to this video produced by Kohler, you should use greenboard or other water resistent backer material. I wouldn't use OSB, and cement board seems like overkill but could help if you needed ...
JPhi1618's user avatar
  • 28k
2 votes

Can I install heat mat and backer board over cork flooring?

If you read James Hardie installation you need to thinset the board down with modified thinset so over cork no don't do it
user110568's user avatar
2 votes
Accepted

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

What you have is done all the time. In some cases it is set on regular drywall, a little weaker than the blueboard. The loading tests the shear strength of the screws and glue that holds the drywall ...
Jack's user avatar
  • 35.6k
2 votes
Accepted

Efficiently remove backer board screws

If the heads of screws are in good condition(clean) a drill/driver probably best bet to remove. Dirty or damaged heads, a hammer is useful, either pull them up or hammer them down. If hammering them ...
crip659's user avatar
  • 25.6k
2 votes
Accepted

HardieBacker with Hydrodefense very difficult to drill

My guess is it is just more resistance than you are used to. It is probably worth taking an extra/scrap piece of the Hardiebacker, setting it flat on a couple of 2x4s on a workbench or flat surface, ...
TylerH's user avatar
  • 1,037
2 votes
Accepted

What should I use for a smooth surface wall board for quilting layout?

You could obtain a 4'x8' piece of coated hardboard and hang that on the wall. (You could also build a frame for around it as Ed Beal suggested in his comment.) The hardboard has a smooth, white, ...
gnicko's user avatar
  • 5,615
2 votes

How should cement board interface with a shower pan?

Here are the steps I used for decades with great success (no water problems). You can use the Pre-slope, but I have used a perfect slope to get the mud bed correct and didn't use the pre-slope. Cover ...
RMDman's user avatar
  • 32k
2 votes

Using concrete patch to flatten plywood subfloor (in square recess in hardwood floor) before installation of cement board

You can install concrete over plywood if you use a fortified Portland cement like Ardex or Webcrete. You must use a primer on raw plywood. Also make sure the plywood is sound and secure, as excessive ...
Greg smitb's user avatar
1 vote

Can I install heat mat and backer board over cork flooring?

Do not ever tile over cork. Unless you poor a 5ft thick layer of concrete over it 1st. Then it might work.
Ted's user avatar
  • 11
1 vote

Can you “re-use” Hardi Backer?

The tile, if installed correctly will not come off the backer board cleanly, it will leave behind thinset or rip up chunks of backer board when you demo it. Even if it was relatively easy, keeping the ...
redlude97's user avatar
  • 1,695
1 vote

What screws should I use to screw Wedi boards into wood studs using Wedi washers?

Wedi's website indicates the wedi boards (essentially large sheets of rigid foam with concrete surface) should be attached to substrate with adhesive (wedi 320) or directly to studs with another ...
Fredric Shope's user avatar
1 vote

What screws should I use to screw Wedi boards into wood studs using Wedi washers?

Taking a look at their web site, it appears that "Wedi board" is, effectively, a foam version of drywall appropriate for both wet & dry locations. (I looked it up because I had no clue ...
FreeMan's user avatar
  • 47.4k
1 vote
Accepted

How do I attach natural stone to backerboard in a shower

What you are doing sounds like you could simply use modified thinset. If the tile will be uniform, or perhaps not you could use tile setters shims to create the joints and then use sanded grout to ...
Jack's user avatar
  • 35.6k
1 vote

Can I install heat mat and backer board over cork flooring?

You can check with the heating mat manufacture to determine if the cork is a suitable subfloor. But I don't think that cork is a good underlay for tile. It's too soft. The target finished height of ...
Charles's user avatar
  • 480
1 vote
Accepted

Possible application to backboard in shower

I would let that dry the best you can, heat or fan...once that is done, paint it with kilz or similar and, of course, wait for that to dry, then install backer board up the wall. The reason I would ...
Jeff Cates's user avatar
  • 2,372
1 vote

Can walls be built on top of backer board?

You are trying to avoid a few backer board cuts related to the closet area. However, you are also increasing the height of the floor. If your existing walls are the standard 8' height, you will have ...
Jerry_Contrary's user avatar
1 vote

Anchoring through shower tile & beyond

The tiles cracked because anything supporting the weight of a human has to be stronger than a tile and cement board. The adjacent tiles cracked because the middle tile is pulling the entire wall with ...
Joe Fala's user avatar
  • 6,374
1 vote

How do I keep this old shower pan water tight

Nothing but caulk (100% Silicone), is the hands-down best I've found. The Wonderboard would sit (actually stand-on and rest-on before screwing down) on the Terrazzo's top and back lip in a squished-...
Iggy's user avatar
  • 10.3k
1 vote

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

Most use standard drywall. If you feel better using dens shield or another WP drywall that would be fine tub surround adhesive must be used to avoid discoloring bleed through on the surround. Two ...
Kris's user avatar
  • 4,555
1 vote

What size should I cut my backer board?

The reality is that it doesn't matter all that much, and optimizing for whatever allows them to reuse the most material or minimizes cuts should be your first priority (I see you have another ...
virtualxtc's user avatar
  • 2,577

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