redgard is not a code approved method of shower pan lining. use cpe liner with pre slope the mud bed then redgard the mud if you want.

Hereof, Do you need Redgard on cement board?

1. Industry standards require the use of some type of moisture proofing or waterproofing for showers. With typical cement board, that can be as simple as hanging plastic behind the cement board, or applying some type of waterproofing after the board is hung – like Redgard.

Should I use modified or unmodified thinset? It’s important to note that latex-modified thinset can still be used between the membrane and the subfloor because it is not impervious. However, unmodified thinset should be used between the membrane and the tile.


37 Related Questions Answers Found

 

Is crack isolation membrane necessary?

The rule is that the membrane over a crack should extend out the diagonal width of the tile on either side of the crack. TCNA requires that a crack isolation membrane be installed on above ground concrete floors when an ANSI A118. 4 thin set mortar is used to install large format tile.

How long does RedGard last?

4-5 months

Do I need Ditra on concrete floor?

Lay the tile directly on the concrete

Yes, writes Doug McEvers, Ditra will insulate the concrete slab from the tile and lower the potential for thermal storage. β€œThere is nothing wrong with tile laid directly on concrete providing all precautions are taken regarding moisture proofing,” he says.

What is crack isolation membrane?

On concrete floors, crack isolation membranes, also known as crack I products, are designed to absorb the stresses produced by movement in the concrete. The purpose of the membrane is to stretch with the movement of the concrete, but not allow this movement to telegraph to the face of the tile or grout joint.

What Thinset do you use over RedGuard?

Moreover, the Flexbond modified thinset (sold at HD, for example) specifically lists redgard as one of the surfaces it can be applied to and therefore, following manufacturer recommendations, a person should be using a modified thinset like flexbond over Redgard.

Can you use redguard on plywood?

Redgard can be used as an antifracture membrane over a properly prepared plywood subfloor.

Is unmodified thinset waterproof?

All portland based cementious products will allow water to pass through. The latex modified is more resistant due to the latex that is mixed in with the adhesive but that doesn;t make it “waterproof“. The latex also allows a bit more flex in the tile and substrate. As Jason described, thinset itself isn’t waterproof.

Does RedGard smell?

Do you need membrane under tile?

It can be the grout or the tile itself can pop loose if it’s the weakest link of the installation. If that happens, you have to redo the entire floor because the movement of the slab is such that the tiles will no longer fit. An underlayment membrane allows the slab to move without affecting the surface.

What is the purpose of Ditra matting?

DITRA Matting can be used on a wide range of surfaces, including: concrete, mortar screeds, gypsum based screeds, radiant heated screeds and masonry/mixed substrates. DITRA Matting is particularly useful when installing underfloor heating and provides a decoupling layer between the underfloor heating and the tiles.

Do I need to waterproof concrete floor before tiling?

Waterproofing concrete is a fairly simple procedure. Therefore, any concrete that may come into regular contact with water, such as under tile or for a pool, will need to be waterproofed. If cement is not waterproofed, it can cause issues with the mortar used between the tiles.

What is decoupling membrane?

Decoupling Membranes. Decoupling Membranes are designed to prevent newly laid tile floors from cracking if the substrate beneath them moves in any way due to natural or environmental causes.

Can you use premixed thinset over redguard?

From what I have read, the premixed thinset does not dry out to form a good adhesive bond when applied over/under a non-permeable membrane like Redguard or the Kerdi-band products. The dry mix (where you add the water on-site) does.

Should I use Ditra or cement board?

1. Ditra is waterproof, while cement board lets water through but won’t be damaged by it. With cement board, the tile is mortared to the cement board and the cement board is mortared to the substrate, so there’s a chemical bond. This difference, Ditra fans would argue, makes it more resistant to movement.

Can you paint over Red Guard waterproofing?

Manufacturer Roundtable: Crack Isolation and Uncoupling Membranes. Laying Schluter Ditra uncoupling membrane over a concrete substrate. Photo courtesy of Schluter Systems. Hydro Guard SP-1 provides a waterproof membrane that also limits the transfer of substrate cracks to the finished ceramic or stone surface.

Can you paint over Red Guard waterproofing?

redgard is not a code approved method of shower pan lining. use cpe liner with pre slope the mud bed then redgard the mud if you want.

Do you need RedGard on Hardibacker?

As long as it’s Cement Board & not some crappy “almost” cement board stuff. You really don’t need the RedGard, but the more protection the betterso go for it. And yes, you can do the boards beforehand. But, hit the filled seams & screws (your weak points) as soon as a panel is ready to give it some time to setup.

What does an uncoupling membrane do?

Using uncoupling membranes

Uncoupling membranes are usually used to uncouple the tiling layer from the substrate and thus reduce the stresses built up between substrate and tile. They can also offer waterproofing and channels for evaporation or heat exchange.

How do you install tile on a membrane?

When using the membrane:
  1. Cut the membrane to size.
  2. Apply a layer of thin-set adhesive fortified with latex to the subfloor.
  3. Roll the membrane out, and position it in place.
  4. Apply a bed of thin-set without latex additive, and set the tile in it.

What is Red Guard waterproofing?

RedGard Waterproofing and Crack Prevention Membrane is a ready-to-use, liquid formula that creates a seamless waterproof barrier and prevents common cracks from occurring in tile, stone and grout. RedGard is easy to apply and dries quickly.

How does Schluter Kerdi work?

Paint On Liquid Waterproofing Membranes
  • Redgard Waterproofing Membrane by Custom Building Products: As I have already mentioned, Redgard is the most popular and the most talked about liquid waterproofing membrane out there.
  • Mapei Mapelastic Aquadefense:
  • Laticrete Hydro Ban:

Can you use AcrylPro over redguard?

We are using AcrylPro premixed ceramic tile adhesive. Some premixed mortars cannot be used over RedGard, but AcrylPro can.

How much does a gallon of RedGard cover?

Custom says 1 gallon of Redgard should cover 35 sq. ft. when used as a waterproofing membrane with a 60 mil wet film. However, doing the math, 1 gallon at 60 mil could cover at a maximum 26.7 sq.

How much does a gallon of RedGard cover?

As long as you use a good primer, you should be OK, though. You can apply thinset over the RedGard and prime and paint over that. Joint compound is reactivated when it absorbs water and can cause problems like mold and blistering or delamination of paint film.

Do you need to tape cement board before tiling?

2 Answers. The thinset and mesh tape are to strengthen the seams. If you are going to tile over the cement board, you should tape the seams. If you just want to leave the corners untreated that will probably be fine, because that seam won’t split the center of a tile.

Do I need to waterproof shower walls before tiling?

Prepping for shower tile is different than the prepping for tile on drywall. A shower is considered a wet application, so you need to waterproof the foundation, which you’ll learn how to do in these instructions. After the waterproofing step, the instructions are the same as if you were installing tile on drywall.

Can you lay vinyl tile directly on concrete?

Vinyl tile can be installed over concrete if the concrete is clean, smooth and dry. Repair any holes or cracks.

Can I use modified thinset over Ditra?

Since DITRA is impervious, it does not deprive the mortar of its moisture. In general, we don’t recommend the use of modified thin-set mortar to set tile over the membranes because these mortars must air dry to cure properly.

What is the best waterproofing membrane for showers?

Prepping for shower tile is different than the prepping for tile on drywall. A shower is considered a wet application, so you need to waterproof the foundation, which you’ll learn how to do in these instructions. After the waterproofing step, the instructions are the same as if you were installing tile on drywall.

Can you paint over RedGard membrane?

As long as you use a good primer, you should be OK, though. You can apply thinset over the RedGard and prime and paint over that. Joint compound is reactivated when it absorbs water and can cause problems like mold and blistering or delamination of paint film.

What is an uncoupling mat?

Paint On Liquid Waterproofing Membranes
  • Redgard Waterproofing Membrane by Custom Building Products: As I have already mentioned, Redgard is the most popular and the most talked about liquid waterproofing membrane out there.
  • Mapei Mapelastic Aquadefense:
  • Laticrete Hydro Ban: