Liquid Rubber Waterproof Sealant – DIY Leak Repair Coating for Flat, Metal & Low Slope Roofs, Foundations, Gutters & More – Flexible Protective Membrane - Black - 5 Gallon
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FREE refund/replacement until Jan 31, 2026
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Availability:
In Stock.
Arrives
Sunday, Mar 15
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Size: 5 Gallon
Features
- INDUSTRIAL STRENGTH BITUMEN FORMULA - Create a seamless waterproof membrane on flat roofs, metal roofs, low slope roofs, foundations, gutters, concrete surfaces, planter boxes, and more. Our premium liquid rubber forms a durable barrier against water infiltration where other sealants fail. Superior alternative to traditional roof tar or patch products
- SUPERIOR FLEXIBILITY & DURABILITY - With over 950% elongation, this waterproof sealant maintains adhesion even with building movement and temperature changes. Our sealant is designed to resist cracking, peeling, and UV damage. Creates a flexible rubberized coating that delivers long-lasting protection
- PROFESSIONAL COVERAGE SPECIFICATIONS - Brush, roll or spray on - For flat/low slope roofs & standing water surfaces: 1 gallon covers 15 sq ft (3-4 heavy coats to achieve 60-80 mil membrane). For vertical surfaces like foundations: 1 gallon covers 30 sq ft (2-3 heavy coats for 30 mil membrane). Ideal for both roof repair and preventative maintenance applications
- WATER-BASED ADVANCED FORMULA - Unlike harsh roof tar or solvent-based products, our water-based formula contains no VOCs or harmful odors, making it perfect for indoor and outdoor use. Doesn't damage foam insulation or sensitive materials. Perfect for waterproofing projects in confined spaces
- ENGINEERED WATERPROOFING SYSTEM - For maximum protection, use with Liquid Rubber Seam Tape or Geo-Textile to bridge joints, seams, vents, skylights, and protrusions where movement may occur. Creates a comprehensive waterproofing system for long-lasting leak repair and prevention on your roof, basement, or foundation
- USED BY PROFESSIONALS & DIYers ALIKE - With millions of gallons sold, Liquid Rubber is the go-to choice for contractors, property managers, and homeowners tackling projects from roof leak fixes to basement waterproofing. Our high-performance formula delivers professional results whether you're an experienced pro or a first-time DIYer
- PREMIUM ADHESION TECHNOLOGY - Superior adhesion to most building materials including metal, concrete, wood, and more. This hardware sealer can remain tacky after curing - NOT suitable for walking surfaces such as walkways, patios or decks. Use for waterproofing applications where foot traffic where foot traffic is minimal or not needed
Material: Polymer
Brand: Liquid Rubber
Style: 5 Gallon
Item Weight: 44 Pounds
Item dimensions L x W x H: 12 x 12 x 16 inches
Material: Polymer
Brand: Liquid Rubber
Style: 5 Gallon
Item Weight: 44 Pounds
Item dimensions L x W x H: 12 x 12 x 16 inches
Water Resistance Level: Waterproof
Item Form: Liquid
UPC: 628421226023
Unit Count: 640 Fluid Ounces
Number of Items: 1
Color: Original Black
Surface Recommendation: Roof, Vent
Manufacturer: Liquid Rubber USA
Part Number: 22602
Item Weight: 44 pounds
Product Dimensions: 12 x 12 x 16 inches
Item model number: 22602
Is Discontinued By Manufacturer: No
Size: 5 Gallon
Item Package Quantity: 1
Number of Handles: 1
Special Features: Waterproof
Usage: Commercial/Residential
Included Components: 5 Gallon
Batteries Included?: No
Batteries Required?: No
Date First Available: April 21, 2016
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Mar 15
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Size: 5 Gallon
Great stuff very impressed . I sealed my steal trailer . Spread easy , went a long way , dried fast and saved me a lot of money taking it somewhere to be done .
Reviewed in the United States on November 13, 2025 by Jason cuti
Size: 1 Quart
Application was to stop water coming in at the top of the house foundation. The material was easy to apply, put on several coats as per the instructions and it seals perfectly. Easy to buy and easy to use.
Reviewed in the United States on November 30, 2025 by Ted Hooper
Size: 1 Gallon
The odor is low, it applies easily with a brush, and builds up well making a nice waterproofing on wood, synthetic decking, and metal roof. Dries quickly. It's expensive but it works.
Reviewed in the United States on October 11, 2025 by Rob Rice
Size: 1 Gallon
Goes on and looks brown but dries black. Easy to apply - like a thick paint. Seems like it will work great - dried well. Will give a better update on how well it works after it has been on for a period of time. Only had it on for 1 day.
Reviewed in the United States on November 7, 2025 by Annie Cline
Size: 1 Gallon
Excellent product. It actually works !
Reviewed in the United States on November 25, 2025 by Horacio Marroquin
Size: 1 Gallon
My husband absolutely loves this product. He said it went on so easy. It covered the leaks perfectly.
Reviewed in the United States on November 21, 2025 by diane
Size: 1 Gallon
Used this to seal cracks in our deck before we redid the floor. It has filled those cracks and held up great in the rain storms we have gotten. Coverage is good. It is thick but perfect.
Reviewed in the United States on November 17, 2025 by Karissa Corrigeux
Size: 5 Gallon
I wanted to start out by saying the company's customer service is amazing. There is a toll free number on the back of the bucket and someone answered my questions. We asked them about the dry time after 3 days of waiting for this stuff to get less sticky and they were very nice. We were painting this on a concrete/cement flooring. We live in FL and there is moisture in the soil. Our villa was built about 30 years ago and moisture was seeping up through the foundation. We had to rip out the flooring that was put down just 2 years ago (right before we moved in) because black mold was growing on the cork sub floor. (Not our choice to put down a cork sub floor on a foundation that had moisture but the previous owners clearly didn't know about the moisture issues). So, we starting rolling it in the main areas and painting it with a brush in the corners/sides. The stuff is very thick. However, a few days later it was still very tacky. Tacky to the point we couldn't walk on it. Every time we tried we would get stuck in place. It was pretty funny. We had tilers waiting for this stuff to "dry/cure" before the walked on it. I called the company on day 3 and they suggested to use talc powder or lay down plastic. Our tilers said plastic wasn't a good idea. On day 4 after we applied it they gave up trying to wait until it hardened and started laying tile. They said they ruined their knee pads and it was hard to walk on. We also noticed it was ripping. Wherever they would kneel, move tile, use their rolling cart, etc, it would leave holes. We had hundreds of holes throughout the waterproofing. I wanted to cry. It took us a while to apply and we lost time waiting for the stuff to dry (which it never did). We told them they would have to wait until we applied a second coat. We waited another 2 days and they came back. It did the same thing. Holes everywhere. We wasted about a week in time. Does it work? Maybe, but there is no way for us to tell since they laid thin set on top of it and it had so many holes. I cannot stress how shredded this sealant was. We wasted $150 and hours of time applying and waiting for it to dry. The tilers also were not thrilled with us at all. They told us to buy another product which the local Home Depot had. It is ever so slightly more but it was a dream to apply and, after days of tilers walking on it, hasn't made a single hole. I would not recommend this product to a single person. I wish we hadn't bought it. This would get negative stars if that was an option. I usually don't leave bad reviews but this was that horrible. Sorry Liquid Rubber.
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Reviewed in the United States on October 16, 2017 by MellissaRose