Liquid Rubber Color Waterproof Sealant - Elastomeric Roof Coating 5

In this review of the Liquid Rubber Color Waterproof Sealant, the bottom line is straightforward: this 5-gallon elastomeric coating is best for homeowners and contractors who need a flexible, seamless membrane to stop roof and foundation leaks without heavy equipment. It shines where waterproofing metal, low-slope or flat roofs, gutters and exposed concrete are priorities, delivering a rubber-like barrier that resists UV and extreme temperatures. The single biggest reason to buy is its ease of application combined with durable flexibility that bridges movement-prone seams and penetrations.

Key Features

• Waterproof membrane: Creates a continuous, seamless rubberized coating that stops active leaks and prevents further water intrusion on roofs and foundations.
• Multi-surface use: Formulated to adhere to metal, concrete, gutters, foundation walls and planter boxes so one product covers many repair tasks.
• Professional-grade elastomeric: Offers high elongation and solar reflectivity to resist cracking and degradation in a wide range of climates.
• Easy application: Applies with brush, roller or sprayer to clean, dry surfaces so projects can be completed without specialized equipment.
• Water-based, low odor: The formulation avoids harsh solvents, making indoor foundation or basement work more user-friendly than solvent-based alternatives.
• Coverage efficiency: A 5-gallon pail covers roughly 150-250 sq. ft. depending on surface texture and number of coats, helping estimate material needs.

Who It's For

This product suits homeowners, small contractors and DIYers tackling roof leak repair, foundation patching or gutter protection who want a durable, flexible coating without switching to full roof replacement. It is especially useful where movement is expected-around seams, vents and flashing-and where UV resistance and temperature tolerance matter.

Those who need a walkable surface, a decorative floor coating, or an instant cure in wet conditions should look elsewhere; the sealant can remain tacky after curing and requires dry conditions and temperatures above 50F/10C during application and initial cure. Users who need extremely fast curing in rainy climates should consider other fast-dry systems.

Pros & Cons

Pros

• Stops leaks effectively and forms a flexible, seamless waterproof barrier on multiple substrates.
• High elongation and UV resistance deliver long-lasting protection across a wide temperature range.
• Water-based formula with low odor makes indoor foundation and basement use more practical.
• Simple brush, roller or spray application lets most DIYers complete projects without specialized tools.

Cons

• Can be thick and sticky during application and some users report tackiness after cure, so not ideal for walkable surfaces.
• Curing time varies by conditions and may take longer than expected in cool or humid environments, delaying project completion.

Specifications

Product type	Waterproof elastomeric roof and foundation sealant
Volume	5 gallon pail
Coverage	Approximately 150-250 sq. ft. per 5 gal (surface dependent)
Application	Brush, roller or sprayer; 2-4 heavy coats depending on slope
Temperature range	Works from -40F to 150F; apply above 50F/10C
Finish properties	Flexible, rubber-like membrane; UV resistant and solar reflective

Our Verdict

The Liquid Rubber Color Waterproof Sealant is a solid value for anyone needing a flexible, multi-surface waterproof coating that avoids harsh solvents and heavy equipment. It is particularly good for metal roofs, low-slope roofs and foundation repairs where movement and UV exposure are concerns. Buyers should plan for multiple heavy coats and be aware of longer cure times in cool or damp conditions, but for durable leak control and ease of application it earns recommendation.

Frequently Asked Questions

Can this be used on metal roofs?
Yes. It is formulated to seal and protect metal roofs, gutters and low-slope surfaces when applied to clean, dry metal.

How much area does a 5-gallon pail cover?
Expect roughly 150-250 sq. ft. depending on surface porosity and the number of heavy coats required.

Is it suitable for basement foundation repair?
Yes; the water-based, low-odor formula is appropriate for foundation and basement wall waterproofing when applied in dry conditions and with proper surface prep.