First Kerdi can be installed on drywall or cement board. However if installed on drywall it is only protecting one side. The back side of the drywall fails and it is just as bad or worse than if it had an issue on the tile side. All shower/tub areas should have concrete board (I prefer hardiboard).
What is better KERDI-BOARD or cement board?
Cement Board can withstand a certain amount of water. This is why when you look at Cement Board, it is considered to be water-resistant yet not waterproof. Kerdi Board, however, does really well with water and it can handle getting quite wet. Many people will even use Kerdi Board when they are doing waterproofing.
Do you need Kerdi membrane over cement board?
Kerdi is the vapor barrier, there is no need for anything behind it. Kerdi can even be installed over drywall. Cement board and grout are not water proof, if there’s Kerdi no moisture is ever going to be able to get behind it.
Is Schluter KERDI-BOARD worth it?
Great product. It takes a little longer than the traditional mud shower bed and water-proofing methods, but it is worth it. Took my old shower down to the studs and completely rebuilt it with DuraRock and then the Schluter Kerdi Shower Kit and 12×16″ tiles.
What can I use instead of a KERDI-BOARD?
Profoil is a cheaper alternative to Schluter Kerdi without sacrificing quality. It’s applied the same as Kerdi with both in and out corners available.
Can I use Kerdi-board instead of cement board?
It’s a lightweight polystyrene board faced with Kerdi that comes in various thicknesses that you can use in place of drywall or cement board.
What is the best backer board to use in a shower?
Cement board is a good, reliable backer board that works well on both floors and walls. Keep in mind that most tile setters err on the side of caution and brush a waterproofing membrane on top of cement board when it is in wet areas like showers or tub surrounds.
Can I install Kerdi membrane over Hardibacker?
Cut a section of Kerdi off the roll and dry fit it on the hardie. Mark the coverage of the Kerdi on the hardieboard. Thinset to just outside those coverage marks with the flat side of the trowel, then come back and give it a quick comb with the notched side of the trowel. Then hang the sheet.
Why is Kerdi-board not available?
We are dealing with a raw material shortage as a result of COVID, and we are unable to source part of the materials required for our Kerdi-Board production.
Does Redgard stick to Kerdi membrane?
Quote from the video:
Quote from Youtube video: And the only problem is is that of course if moisture does get behind it uh because this is a cement fiberboard it does wick up moisture it'll swell and then yes you're going to have issues with your
Do I need cement board for shower walls?
Shower walls must be backed with a waterproof backing board. Drywall is not an acceptable backer board. Even moisture-resistant drywall (green or blue varieties) will not hold up in showers. Use a true cement backer board, or try a shower backer board kit like this one.
Can you install Kerdi board directly on studs?
Quote from the video:
Quote from Youtube video: Or vertically on the framing. With appropriate screws and corresponding shrewder kerdi-board ZT washers.
Can I put Kerdi membrane over drywall?
So, is Kerdi safe to use on drywall? Yes! In fact, it’s advised to use this product on drywall in your bathroom before laying tile and other materials. Without a waterproof membrane like Kerdi, water and moisture can seep through grout, tile and other materials and end up damaging wood studs and subfloor.
Can I use Kerdi-board on shower floor?
With the KERDI-SHOWER-TT thin shower tray on a wood subfloor, you can build up the rest of the bathroom floor by installing either a 5/8″ or 3/4″ plywood/OSB panel on top of the wood subfloor along with DITRA or another Schluter®-Systems uncoupling membrane.
Is uncoupling membrane better than cement board?
Backer boards are made of concrete and fiberglass mesh, and must screwed into the subfloor to secure it. Because it’s screwed down, it can’t provide crack protection like uncoupling mats. Because of their makeup, uncoupling mats are faster and easier to install.
