Custom Building Products RedGard 1-gal. Waterproofing and Crack Prevention Membrane-LQWAF1 - The Home Depot
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Custom Building Products

Model # LQWAF1

Internet # 100169081

Store SKU # 755504

RedGard 1-gal. Waterproofing and Crack Prevention Membrane

Custom Building Products RedGard 1-gal. Waterproofing and Crack Prevention Membrane

This item has been discontinued.
The Home Depot no longer carries this specific product.

$49.97 / each


Model # LQWAF1

Internet # 100169081

Store SKU # 755504

Store SO SKU # 1000392349

RedGard Waterproofing and Crack Prevention Membrane prevents cracks in tile and stone floors due to surface movement. The membrane also produces a moisture barrier. Suitable for use in residential and commercial tile and stone installations.

  • Designed for interior and exterior use
  • Easy to use and can be applied by roller, trowel or airless sprayer
  • Apply 1 coat to inhibit tile and stone cracking due to minor surface movement
  • Apply 2 coats to waterproof floors and countertops
  • Rated for extra heavy duty service

Info & Guides

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Assembled Depth (in.) 
9 in 
Assembled Height (in.) 
9 in 
Assembled Width (in.) 
9 in 
Product thickness (mil) 
Recommended overlap (in.) 
Roll length (ft.) 
Roll width (in.) 
Commercial / Residential 
Commercial / Residential 
Flooring Product Type 
Flooring type(s) used with 
Tile & Stone 
Moisture control included 
Package coverage (sq. ft.) 
Sound absorbing 
Subflooring type 
Warranty / Certifications
Manufacturer Warranty 
1 year product 


Rated 4.4 out of 5 by 77 reviewers.
Rated 5.0 out of 5.0 by Easy to Apply Water Isolation Barrier Not much simpler than this to apply a water barrier for showers. Oh sure the fabric membranes are nice but are you really sure you have 100% adhesion? With Red Guard there is no question if you have a good attachment of the water barrier because it's painted on directly to the concrete board. I seal the seams with fiberglass tape and Red Guard for a perfect water barrier. For now I've only used it for bathroom tile jobs but will be trying it out on a tiled floor job next week. Want to have an isolation layer similar to what tile under layment membrane would do but for less time and money. Oh yeah, got to love the bubble gum pink when you first apply it but the results speak for themselves. July 22, 2014
Rated 5.0 out of 5.0 by Awesome Product - (also providing clarification on a wrongful 1 Star review by another customer) I have used REDGARD on walls and floors, had excellent results. Even after a year with only using 7/16" OSB on top of 3/4" subfloor, my tile is still flawless. No cracks, no issues, lot's of foot traffic. I also wanted to comment on a misleading review - 'Bill from Florida' gave this 1 star review "$675 Shot. No where on the instructions or website does it say "wait 28 days for new concrete to cure". So after 4 good days we put down the Redgard and now its peeling up. And Redgard says "you should have waited". How are you to know if you don't tell me" It is known by those in the construction industry as a rule of thumb to always "wait 28 days for new concrete to cure", before applying any type of sealant. In the manufacturers defense, concrete can cure much faster or slower depending in the mix and weather. If you are going to seal concrete, see what the manufacturer or mix plant says. REDGARD or any other manufacturer can not know your variables. December 18, 2013
Rated 5.0 out of 5.0 by Easy to apply, great solution This was a great option for a water barrier. This was my first tile job but I used it for the tub surround in my master bathroom. Sealed the joints with fiber tape and applied this directly to the duroc (2 coats). Make sure the area your working in has good ventilation as it has a VERY strong odor. May 11, 2015
Rated 4.0 out of 5.0 by Smelly but easy to apply Product was extremely easy to apply. I applied it to 3/4" Concrete Board . Applied with a roller from top to bottom. let it dry (turns a slight reddish pink) and applied the second coat from left to right. When dried It turns red. After it dried I inspected the surfaces for air bubbles or gaps where it didn't cover completely and went over those areas again.... After That it was just Thinset and tile until done. The only downside to this product was the smell it puts off.. Make sure the room is well ventilated. After about 24 hours the smell is gone. October 15, 2013
Rated 4.0 out of 5.0 by Went on easily I read reviews where people had trouble installing this on Hardy Backer. I put it on Hardy Backer and didn't have any problems with it not sticking. Seems to be solid and a good moisture barrier. January 2, 2015
Rated 5.0 out of 5.0 by Easy to use Simple to use. If you can use a brush and roller, this is the stuff for you. October 18, 2014
Rated 5.0 out of 5.0 by Easy to work with Easy to work with. 4" paint roller works right inside the pail and spreads easy. coats pretty fast and dry's quick too depending on coating amount June 20, 2013
Rated 5.0 out of 5.0 by Pink Mayo! I used a primer coat 3 parts water, 1 part RedGard on top of cement board. It was a little messy because there was basically no viscosity. Also, I made way too much. I think that about 2 cups RedGard and 6 cups water would be enough for a standard 55 sf tub surround. After that, I did my first coat with a roller, but my second coat with a brush. I definitely think a brush works better. It's easier to get a nice, thick coat on there. I read all of the reviews before using this product since this was my first time using it. I thought that it was going to be rubbery and peal easy, but not at all. It's more like a hard plastic and I haven't had any issues with pealing. In fact, you can even mark on it with a pencil. Really easy to put thin coat on top of. The smell wasn't too bad, I bought a mask just in case, but didn't end up using it. If I were to use this again I would bring it down so that it overlaps with an 1/8" of the tub deck. Right now I just brought it down to just meet the top of the deck. Around the holes for the shower/tub faucet and body valve I used a product called TruGard. It's a mesh and I ordered it from their website and got it in two days. Go Get RedGard!!!! August 14, 2013
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