Custom Building Products RedGard 3-1/2-gal. Waterproofing and Crack Prevention Membrane-LQWAF3 - The Home Depot

Custom Building Products

Model # LQWAF3

Internet # 100678063

Store SKU # 934492

RedGard 3-1/2-gal. Waterproofing and Crack Prevention Membrane

Custom Building Products RedGard 3-1/2-gal. Waterproofing and Crack Prevention Membrane

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

$139.00 / each


Model # LQWAF3

Internet # 100678063

Store SKU # 934492

Store SO SKU # 1000248522

RedGard 3.5-gal. Waterproofing and Crack Prevention Membrane is a ready to use waterproofing and crack prevention membrane for tile and stone installations. Just roll it on and let it dry. The membrane dries quickly.

  • For tile and stone installations
  • Apply with a roller, trowel or sprayer (tools not included)
  • Use 1 coat for crack prevention
  • Use 2 coats for waterproofing
  • Dries quickly
  • Includes moisture control
  • Covers 385 sq. ft.

Info & Guides

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Assembled Depth (in.)  12 in  Assembled Height (in.)  12 in 
Assembled Width (in.)  12 in  Product thickness (mil)  30 
Recommended overlap (in.)  Roll length (ft.) 
Roll width (in.) 
Antimicrobial  No  Commercial / Residential  Commercial / Residential 
Cushioning  No  Flooring Product Type  Underlayment 
Flooring type(s) used with  Tile & Stone  Material  Other 
Moisture control included  Yes  Package coverage (sq. ft.)  385 
Returnable  90-Day  Sound absorbing  No 
Subflooring type  Any 
Warranty / Certifications
Manufacturer Warranty  1 year product 


Rated 4.8 out of 5 by 20 reviewers.
Rated 5.0 out of 5.0 by Saved a tile job gone bad. I had never heard of this product, but learned about it in order to salvage a bad shower tile installation job that was stopped before it got worse. It goes on easily and creates a totally water proof barrier behind your tile. No more finding out two years from now that the installer screwed up and now you have major problems because of leaks in your shower. The only thing I would add to their instructions is to ignore using a trowel. The stuff is too thin. Just use a big paint brush and slosh it on in the corners and over the mesh tape along the seams. Then use a roller to do the flat surfaces. July 16, 2014
Rated 5.0 out of 5.0 by Should be a must for building codes I specialize in bathroom remodels, and this product should be required anytime a shower is being built. I've been using it for over 6 years. it is easily applied and dries fairly quickly depending upon atmosphere conditions. I will not do a job without redgarding the entire shower. It works great for a crack suppressant also. do yourself a huge favor, bite the bullet and spend the money, its worth every penny to know you shower won't leak March 29, 2015
Rated 5.0 out of 5.0 by The Redgard is an amazing product The product was so easy to apply with a paint brush or roller. The best advice I can tell you is: make sure you have a clean room. Also, when applying make sure you have a smooth application as it does not flatten out like paint will. July 8, 2014
Rated 5.0 out of 5.0 by Product has superior quality Easy to use. Just follow directions. Installed product on basement floor before installing tile. May 13, 2014
Rated 5.0 out of 5.0 by Very Happy with this product I used this product for one of my current projects. Straight forward and easy to understand instructions. Follow the instructions and you should do well. I used it on the bathroom floor in addition to the shower floors and walls in two bathrooms. I believe using this product (something you won't see) was well worth the investment to protect the greater investment in what you do see. September 23, 2014
Rated 5.0 out of 5.0 by Excellent Product It is really helpful that it goes on pink but when it turns red, it's dry. It covers easily and does the job. Not cheap, but worth the price. March 12, 2015
Rated 5.0 out of 5.0 by Waterproofing and crack membrane This product is ideal to spread over a clean concrete floor with stress cracks prior to laying ceremic tile. Have used it under two large tile flooring jobs. Works great. December 30, 2014
Rated 5.0 out of 5.0 by Quality Product Be sure to read the instructions and watch the youtube videos for this will save you time and aggravation. We used it on the floors, shower floor (used oatey pan liner and mudbase), curb and walls of our new bathroom. We found it relatively easy to install with a brush for the corners (which goes on too thin) and with a thick nap roller (which you must use to get on a thick enough coat) for the rest. We used an expensive roller which meant the roller itself and the tool had to be tossed afterwards so I would suggest using a cheap tool because its not possible to save it. We put on three coats and four in some caulked cracks (between the durock). In addition to the bathroom, the off label way we used it was to paint on the inside of a gutter that had been fixed twice and sprayed with 2 different gutter rubber leak prevent spray cans which never held. Redgard did the job. Its been through many downpours since we installed it and we now have a gutter that finally does not leak. If you end up with left over redgard the manufacture suggest placing cling wrap (plastic wrap) inside the can over the top of the paint and running it up the sides slightly. This way, little to no air can dry it up so you can use it for another project. April 15, 2014
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Store Exclusive. This item is available for purchase in select stores only.