Check all our DIY applications Learn moreDiy Application
- ENVIRONMENTALLY FRIENDLY - Liquid Rubber Foundation Sealant is water based, containing no Solvents or VOC's. This means it's safe to use indoors and outdoors with no special breathing apparatus like solvenated products need. You're safe, your children are safe and your pets are safe. We believe you should have a choice in purchasing high quality products that are safe for you and the environment
- USED FOR - Foundations, ICF's, Basements, Shower Liners, Deck and Fence Posts, Planter Boxes, Metal, Wood, Concrete and more....
- EASY TO APPLY - Basically just like painting except you use heavy coats to build up your waterproof membrane. Open the container and start using. You can close the container and use later if you have left over material. No pot life or working time like 2 component products. Apply by Brush, Roller or High Quality Piston Paint Sprayer
- HIGHLY FLEXIBLE - Final membrane has over 900% Elongation.
- FOR A BULLETPROOF SYSTEM - Bridge joints, seams, vents, gaps, protrusions…. With LIQUID RUBBER SEAM TAPE or LIQUID RUBBER GEO-TEXTILE where possible movement may occur.
Coverage
Flat/Ponding Surface
50 sq ft/G per coat. Apply 3-4 heavy coats to achieve a 60-80 mil. (1.5-2.0mm) membrane
Vertical Surfaces
100 sq ft/G per coat. Apply 2-3 heavy coats to achieve a 40-60 mil. (1.0-1.5mm) membrane
Tips
- Avoid hot, direct, intense sun when applying. Mornings and Evenings are best if it's blistering hot
- Product stays soft, flexible and may have some tackiness, not meant as a constant walking surface
- Apply next heavy coat when it's dry to touch, make sure there is no uncured material underneath. Tacky is ok
- Generally you can apply 1-2 heavy coats per day
- Apply all material until you use up the required amount
- Do not combine Black products with Coloured products, use one or the other
- For larger areas, pour out and spread around with a broom, roller or squeegee
- Apply above 5C/40F
- Curing time depends on temperature, humidity and airflow
- Apply next coat(s) as soon as possible not allowing extended time between if possible
- Safe for Fish and Plants
See more in FAQ's
Product Videos
Colors
Black
Due to Computer Monitors, Colours may not be exactly as shown.
- Home Improvement
- Building Materials
- Sealants, Fillers and Adhesives
- All Sealants, Fillers & Adhesives
$159.95 (5.0)5 stars out of 2 reviews2 reviews
$159.95
Out of stock
Currently out of stock
Flex Seal Liquid Rubber Sealant Coating, 16 oz, White
Sponsored
current price $17.87
Flex Seal Liquid Rubber Sealant Coating, 16 oz, White
4.3 out of 5 Stars. 155 reviews
PickupDelivery3+ day shipping
Notice unusual marketplace activity?
ReportCan Liquid Rubber be used indoors?
Liquid Rubber Foundation Sealant/Basement Coating is a water-based product that is safe to use both indoors and outdoors. This sealer is commonly used for foundations, ICF's, basements, shower liners, deck and fence posts, planter boxes, and on metal, wood, concrete surfaces, and more.
Can you use liquid rubber on basement walls?
Flex Seal Liquid is thicker than paint and dries into a strong, rubberized coating. It can also help seal out air, water, and moisture and is chemical and mildew resistant - making it a great choice for your basement walls. Start by taping off the walls you will be waterproofing with blue painter's tape.
Can you seal a basement wall from the inside?
Waterproofing a basement in the inside is a very popular option because it is done without major exterior excavation and, in some cases, can be done very quickly and economically.
How do you waterproof a block foundation from the inside?
You can waterproof your concrete block foundation from the interior of your home by installing drain tile (also known as “footing tile” or “weeping tile”) around the perimeter of your basement.