Liquid Rubber Color Waterproof Sealant 5 Gallon - Elastomeric Roof

In this review the Liquid Rubber Color Waterproof Sealant is examined for homeowners and DIYers who need a durable, flexible waterproof coating for roofs and foundations. The biggest reason to buy is its ability to form a continuous, elastomeric membrane that resists cracking and bridges joints, making it useful for patching leaks on metal roofs, sealing flat or low slope roofs, and protecting concrete foundations. This review focuses on real-world application, ease of use, and long-term performance based on product details and user feedback.

Key Features

• Waterproof membrane: Creates a seamless, flexible rubber-like barrier that stops water intrusion on metal, concrete and other surfaces.
• Multiple surface compatibility: Can be applied to metal roofs, flat roofs, gutters, foundations and basement walls for broad home repair use.
• Coverage and thickness: One 5-gallon bucket covers roughly 150-250 sq. ft., allowing a substantial repair or coating of small roofs with multiple heavy coats.
• Application simplicity: Applies like paint with a brush, roller or sprayer so no specialized equipment is required for most DIY projects.
• Water-based and low odor: The formula is water-based with no harsh chemicals, making it suitable for some indoor foundation or basement work.
• Durability and flexibility: High elongation and UV resistance help the coating resist cracking, peeling and degradation across a wide temperature range.

Who It's For

This product is best for homeowners, RV or camper owners, and small contractors who need a professional-grade, DIY-friendly waterproof coating for metal roofs, flat roofs, gutters and foundation walls. Its paint-like application and water-based formula make it practical for people comfortable prepping surfaces and applying multiple heavy coats over 48 hours.

Those who should look elsewhere include property owners needing a walkable surface for patios or decks, because the cured product can remain tacky and is not rated for regular foot traffic. Also consider a different specialized roofing system if you require immediate trafficability or a single-coat, ultra-fast cure solution.

Pros & Cons

Pros

• Creates a flexible, continuous waterproof membrane that bridges seams and gaps to stop leaks.
• Easy to apply with brush, roller or sprayer for DIY projects without special gear.
• Long-lasting performance with UV resistance and wide operating temperatures for durability.
• Water-based formula has low odor, making it suitable for some indoor foundation repairs.

Cons

• Can remain tacky after curing and is not recommended for walking surfaces like patios or decks.
• Some users report variable drying times and occasional adhesion issues on difficult or dirty substrates, so careful prep is required.

Specifications

Product type	Elastomeric waterproof sealant / roof coating
Volume	5 gallon
Coverage	Approx. 150-250 sq. ft. per 5 gal (depends on surface)
Temperature range	-40F to 150F
Elongation	Up to 900% (flexible)
Application	Brush, roller or sprayer; 2-4 heavy coats depending on slope
Base	Water-based, low odor

Our Verdict

The Liquid Rubber Color Waterproof Sealant is a solid choice for DIYers and small professionals who need a flexible, long-lasting waterproof coating for metal roofs, flat roofs and foundations. It offers good coverage for the volume, easy paint-like application, and strong UV and temperature resistance, making it good value for leak repair and ongoing protection when surfaces are properly prepared and multiple coats are applied.

Frequently Asked Questions

Can this be used on a basement wall?
Yes, its water-based, low-odor formula is suitable for foundation and basement wall applications when surfaces are clean and dry.

How many coats are required?
Apply 2-3 heavy coats for vertical or sloped metal roofs and 3-4 heavy coats for flat roofs as recommended for full waterproofing.

Is it walkable once cured?
No, the product can remain tacky after curing and is not recommended for walkways, patios or decks that require regular foot traffic.