Liquid Rubber Waterproof Sealant 4-gallon Waterproof Elastomeric Roof Sealant

Name: Liquid Rubber Waterproof Sealant 4-gallon Waterproof Elastomeric Roof Sealant
Brand: Liquid Rubber
SKU: 5019659929
Price: 189.95 USD
Availability: InStock
Rating: 4.9 (181 reviews)

Shop Liquid Rubber

4.9

181

Container Size: 4-gallon

1-gallon

1-quart

4-gallon

5-gallon

Pickup

Unavailable

Shipping

Wed, Sep 23

84 available

Delivery

Thu, Sep 24

84 available

Check Fee in Cart.

Outside Delivery.

Stepper number input field with increment and decrement buttons

Maximum Qty of 300

Members save more.

Here are some similar items...

Liquid RubberWaterproof Sealant 1-quart Waterproof Elastomeric Roof Sealant

181

Liquid RubberWaterproof Sealant 1-gallon Waterproof Elastomeric Roof Sealant

181

APOC301 4.75-gallon Fibered Roof Sealant

128

GardnerWet-R-Dri 4.75-gallon Cement Roof Sealant

697

Liquid RubberWaterproof Sealant 5-gallon Waterproof Elastomeric Roof Sealant

181

APOC501 10.1-oz Elastomeric Roof Sealant

224

Liquid RubberMetalSafe 5-gallon Waterproof Elastomeric Roof Sealant

GardnerWet-R-Dri 10-oz Cement Roof Sealant

702

BLACK JACK 4.75 Gallon Roof and Foundation Coating for Durable Protection

APOC202 4.75-gallon Fibered Waterproof Roof Sealant

GardnerWet-R-Dri 1-gallon Cement Roof Sealant

702

APOC264 0.9-gallon Fibered Waterproof Elastomeric Roof Sealant

199

AMESElasto-Barrier 5-gallon Waterproof Elastomeric Roof Sealant

APOC581 0.9-gallon Waterproof Roof Sealant

APOCRainshield 1-gallon Fibered Roof Sealant

Best Price. Guaranteed

Find a lower price on an exact item? We'll match it. Some exclusions apply.

Price Guarantee

FREE Returns

Return it in store or ship it back for free. Eligibility rules apply.

Return Policy

Pay Your Way

Credit card, PayPal or Buy Now, Pay Later options available at checkout. Your choice.

Payment Options

PROTECTIVE FINISH FOR - Flat roofs, metal roofs, sloped roofs, planter boxes, foundations, sheds, basements, metal, wood, concrete and more
HIGHLY FLEXIBLE & DURABLE - Final membrane has over 1000% elongation preventing adhesion failure, and is UV Stable stopping the sun from degrading the product
COVERAGE - Vertical Surfaces - 1 gallon/30 sq ft (2.8 sq m). 3-4 heavy coats to achieve a 30 mil (0.76 mm) membrane; Flat/Ponding Surfaces - 1 gallon/15 sq ft (1.4 sq m), 4-5 heavy coats to achieve a 60-80 mil (1.5-2 mm) membrane

General
Color/Finish Family	Brown	Drying Time (Minutes)	240
Series Name	Waterproof Sealant	VOC Level	0

Dimensions
Container Size	4-gallon

Features
Cement	No	Fibered	No
Elastomeric	Yes	Waterproofer	Yes

Certifications
CA Residents: Prop 65 Warning(s)	No

Warranty
Warranty	30-day

Compatibility
For Use with RVs	No

Miscellaneous
UNSPSC	30151500

Check out the Best Selling Roof Sealants on Lowes.com

Review

4.9 out of 5

181 Reviews

2 Star

85% Recommend this product

Ratings may include incentivized customer reviews.

Read All Reviews

What Customers Are Saying

Customers overwhelmingly praise this waterproof sealant for stopping chronic leaks where other solutions failed, with consistent success on roofs, decks, ponds, and gutters. Reviewers highlight its flexibility, tight bonding without cracking, and ease of application with rollers or brushes, requiring minimal surface prep. Many report long-lasting results through years of harsh weather, heavy rain, and snow exposure. Users emphasize exceptional cost-effectiveness compared to full replacements, calling it an excellent investment. A few note slight tackiness in heat and recommend wearing gloves during application, though these minor concerns barely diminish the overwhelmingly positive reception.

Customer review summary generated by AI, including incentivized reviews.

181 Customer Reviews

Sort By

Not good in direct sunlight.

Would Not Recommend

Did some roof valleys 12 months ago. Now the product is full of cracks.

Don27June 22, 2026

From LiquidRubber

Response from Technical

Hey Don27 I am so sorry to hear you weren’t satisfied with your purchase! Please reach out to our skilled technical team at support@shopliquidrubber.c...

TechnicalJune 23, 2026

Ready and easy to apply

Would Recommend

Does what it's meant to do. No strong odor when applied indoors. Love that it has no COVs

LouisDecember 19, 2025

From LiquidRubber

Response from Liquid Rubber Technical Support

Thanks for the great review! Awesome customers like you are why we work so hard to make the highest quality water-based waterproofing solutions availa...

Liquid Rubber Technical SupportDecember 22, 2025

Crappy

Would Not Recommend

We put on reptile inclosure. It never dried and was sticky to the touch. We had to put sealant over it to get sticky out.

AnonymousDecember 2, 2025

From LiquidRubber

Response from Technical

That is very unfortunate and we are sorry your project didn't work out as you had hoped. Our Liquid Rubber Waterproof Sealant is intended to be used a...

TechnicalDecember 2, 2025

26 Questions

Read All Q&A

Sort By

Liquid Rubber: Featured Videos

COMPARE PRODUCTS

		Name	Current Item Liquid RubberWaterproof Sealant 4-gallon Waterproof Elastomeric Roof Sealant
		Ratings	181
		Waterproofer
		Elastomeric
		For Use with RVs
Gorilla Waterproof Patch and Seal Liquid Rubber Sealant - Black 32oz (Bulk Pack of 4)	Liquid RubberSilicone Roof Coating 4-gallon Waterproof Elastomeric Roof Sealant	AMESElasto-Barrier 5-gallon Waterproof Elastomeric Roof Sealant	Liquid RubberMetalSafe 5-gallon Waterproof Elastomeric Roof Sealant	Vital CoatShingle Shield Roof Life Extender 5-gallon Waterproof Roof Sealant	Flex Seal Clear Spray Rubber Sealant 14 oz 12-Pack - Transparent Waterproof Stops Leaks.	Geocel2300 Construction Tripolymer Sealant - 10.3 oz Composite for Durable Waterproofing	Kool Seal10-oz Roof Sealant
	30	3	31	12