Liquid Rubber Foundation Sealant/Basement Coating

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We believe everyone should have a choice to buy high quality, environmentally friendly products. We believe you should have a choice to do your own projects (most of the time you can do it better yourself than hiring someone) and save money. We believe in Free Shipping (over $75) and Free Returns. We believe in making your experience the best it can possibly be.  Please, please reach out to us with any questions.  We want to make your project a success.



Liquid Rubber Foundation Sealant/Basement Coating

  • 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.
  • Not meant as constant walking surface due to tackiness



  • Flat/Ponding Surface

    Apply a minimum final thickness of 1 gallon per 15sq ft (1.4 sq/m). It should require around 4-5 heavy coats to achieve a 60-80 mil. (1.5-2mm) (DFT) membrane.

  • Vertical Surfaces

    Exterior Foundation Wall

    Apply a minimum final thickness of 1 gallon per 20 sq ft (1.9 sq/m). It should require around 3-4 heavy coats to achieve a 40-60 mil. (1-1.5mm) (DFT) membrane.

    Interior Foundation Wall

    Apply a minimum final thickness of 1 gallon per 50 sq ft (4.6 sq/m). It should require around 2-3 heavy coats to achieve a 20-30 mil. (0.5-0.76mm) (DFT) membrane.




  • 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
  • Not meant for long term UV exposure
  • Apply next heavy coat when it's dry to touch (typically 12-24 hours), 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 Plants (not meant for Plants you'll be eating. ie. Fruits and Veggies)
  • Do not apply later in the day if Dew is forecast, or if rain is expected within 24 hours.






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Customer Reviews

Based on 39 reviews

I have not yet used the product you sent and will for perhaps another 3 weeks. Feel free contact me again after that time and I will gladly give you my thoughts.

Great customer service

Employee phoned me in response to an email sent, arranged an appropriate time for a phone call order. Kind and courteous. Prompt and patient. Looked up my previous order ensure I got identical products!
Great customer service

Liquid Rubber as a company to deal with.

Today I wanted to return a 5 gal pail of their foundation sealant, It was past the 90 days by a few days. The gentleman Tim on the phone was very accommodating. Very easy to return the product. Dropped off at their warehouse and was greeted by Trevor. As well another very accommodating individual and full of knowledge about basement wall issues. I must say my interaction with this company has been 100% positive. The product is either doing what it was designed to do or there has not been enough water moisture to test it yet. Either way my basement is dry. 5 stars for the company.

Easy to use

Will be hard to give a 100% honest review until spring to see if it holds up. It’s very simple to apply, recommend a brush not a roller. I got more product on myself then the wall when using a roller.

Great sealant

Applied several layers of sealant on exterior foundation wall. Worked like a charm and i highly recommend this product


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