Can you put Kerdi membrane over cement board?

Yes,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).

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.

How do you install Kerdi membrane on cement board?

Quote from the video:
Quote from Youtube video: To what we call burn in or key in the thinset. Into the board it gives it a little drink. Or moisture to the board. And then I'll come back and finish off with the knotch.

Can you use Schluter on cement board?

Schluter videos demonstrate putting their Kerdi membrane over standard Sheetrock walls to gain a completely moisture proof surface. FB video with Meehan shows him using concrete board as substrate only and painting on waterproof material in area that will receive direct water spray.

Do you need cement board with Kerdi membrane?

Before Kerdi membrane can be installed, you need to have a properly prepared substrate. Typically, cement board is the best substrate for Kerdi Membrane installation on walls. For more information about how to install cement board on walls, check out my “How to Install Cement Board on Walls” blog linked here.

How do you waterproof cement board for a shower?

Quote from the video:
Quote from Youtube video: Use painters tape to protect the tub from the silicon and the waterproofing. Next fill the gaps between the cement board and the tub with silicone. Then allow it to dry before you begin the next.

Do you need drywall behind Kerdi board?

Kerdi 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.

What can I use instead of 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.

Is Schluter Kerdi 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.

Is KERDI-BOARD the same as cement board?

There is a product called Kerdiboard you might want to look into. 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. It installs with screws, then you tape the joints & screw holes and install your tile.

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.

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

What do I install Kerdi membrane with?

Quote from the video:
Quote from Youtube video: The shower tray is installed using any of our schluter thinset mortars or an unmodified thinset mortar a one-quarter inch by 3 8 inch square or u-notched trowels used to apply the mortar.

Will Thinset stick to Kerdi fix?

Kerdi fix does not stick to thin-set FYI. So if you pre-treated the backs you just ruined the corner.

Can Kerdi membrane be used as shower floor?

Like the Kerdi-Board and Kerdi membrane, the Kerdi-Board-V provides a waterproof surface, when properly installed. Kerdi-Board can also be used to make a shower curb, although an actual curb is included in the product line.

Can you use Kerdi membrane on subfloor?

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.

Can you put Kerdi on the floor?

The material is equally suitable for creating level substrates in floor renovation projects e.g. residential bathroom installations designed for foot traffic. Schlüter®-KERDI-BOARD is simply cut to size with a utility knife. The gridlines printed on the surface are helpful for neat and quick installation.

How do you install a Kerdi drain on a concrete floor?

Quote from the video:
Quote from Youtube video: So we need to fill that in with some concrete or some mortar or something. But in order to do that we need to leave a little space around the pipe. So we have this coupler.

How do you install a Kerdi shower pan on concrete?

Quote from the video:
Quote from Youtube video: Apply thin set mortar over the bonding flange and within the recessed area of the shower tray surrounding the drain then comb additional mortar using the knotch side of the trowel.

How do you install a shower trap on a concrete floor?

Quote from the video:
Quote from Youtube video: You have to have a two inch drain for a shower. So what I would normally do is I would dig out as much dirt as I could until I almost got to the p-trap. And then I would do a transition to two inch.