Custom Building Products

Model # LQWAF1

Internet # 100169081

Store SKU # 755504

RedGard 1 Gal. Waterproofing and Crack Prevention Membrane

$49.97 /each
  • Ready to use - Roll it on
  • Quick dry formula
  • First step to achieving a lifetime warranty



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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Product Width (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 


Price: $40 - $50
Brand: Custom Building Products
Review Rating: 4 & Up
Package coverage (sq. ft.): 110


Rated 4.5 out of 5 by 96 reviewers.
Rated 5.0 out of 5.0 by RedGard The product is equal to a bed liner but twice as easy to install. This product was thin making rolling on a snap, it goes on pink then turns red as it dries. I put in 2 all new bathrooms in my remodel of my home, I picked up the 3.5 gal bucket and it was enough to cover the floors, around the tubs and a walk in shower before putting up, marble tile. It will, waterproof your baths wet areas and it only takes two coats.. Would never recommend putting in a bath with out putting this product down first. I did use rubber gloves safety glasses and had 2 fan in the work area when I used this product. June 10, 2015
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 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 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 ever want to see a paper bag hold water? This stuff is great have waterproofed many water sensitive areas with redguard.perfect for water proofing shower or bath areas, works well in unison with schluter products. A general contractor who was waterproofing the wall in his indoor pool area with stuff turned me on to it. He had one off his guys paint the inside of a paper bag let dry and put 3 to 4 inches of water in it!!!!! No leaks. Also simple to install, wipe on with brush(pink color) and you know its dry when it turns red. Only down side, it is a lil' pricey January 19, 2016
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