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Butyl Liquid Rubber

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Butyl Liquid Rubber is a specially formulated version of Butyl sheet rubber that has the flexibility needed for change in environmental conditions.

Butyl Liquid Rubber is a liquefied version of a synthetic rubber typically referred to as Butyl.


Butyl Liquid Rubber

Butyl rubber, sometimes just called "butyl", is a synthetic rubber, a copolymer of isobutylene with isoprene. The abbreviation IIR stands for isobutylene isoprene rubber. Polyisobutylene, also known as "PIB" which butyl rubber is based. Butyl rubber is produced by polymerization of about 98% of isobutylene with about 2% of isoprene. Structurally, polyisobutylene resembles polypropylene, but has two methyl groups substituted on every other carbon atom, rather than one.

Prior to the liquefied version emerging on to the market, rolls of the rubber were used for waterproofing roofs. The liquids are much easier to apply. It can also fill cracks and crevices and form an entirely seamless membrane. Butyl Liquid Rubber can go where the sheet version could never effectively coat. Butyl Liquid Rubber coatings have additional uses. Over the years, they have been used for roofing, cooling tanks, industrial applications, storage tanks etc. They can be applied to a wide range of roofing materials, including metal, fiberglass, concrete bur roofs etc. Always consult your roofer to determine if aftermarket coatings are acceptable, given the condition of your overall roof.

Roofing System
Butyl Liquid Rubber

ASTM Tested. ASTM International, formally known as American Society for Testing and Materials, ASTM's physical and mechanical, testing standards provide guides for the proper procedures employed in the determination of the physical and mechanical properties of certain materials. Using test methods such as scanning electron microscopy, hole-drilling strain-gage method, semiautomatic and automatic image analysis, and X-ray diffraction, parameters like strength, ductility, hardness, residual stress, and grain size are measured. These physical and mechanical testing standards allow manufacturers, other producers and users to examine and evaluate such materials for strength and quality to ensure safety toward their end-use. Below are the results of the ASTM Testing:

Elongation ASTM-D-412 500%
Tensile Strength ASTM-D-412 1520 PSI
Permeance (10miles) ASTM-E-96 0.166 perms
Fungi Resistance ASTM-G-21 0 (Pass)
Water Swell ASTM-D-471 0%
Weathering ASTM-4798 Pass
Low Temp. Flex ASTM-D-522 Pass
Wind Driven Rain TT-C-555B Pass
WET ADHESION (ASTM C 794/D 903)
Metal Pass
SBS Mod. Bit. Pass
APP Mod. Bit. Pass
Smooth BUR Pass
EPDM Pass
TPO Pass
Hypalon Pass
SPUF (Foam) Pass

In the United States, ASTM standards have been adopted, by incorporation or by reference, by many federal, state, and municipal government regulations.

Acceptable roof types for butyl liquid rubber

    Butyl Liquid Rubber
  • EPDM Rubber
  • Various Metal Roofing systems
  • Weathered Aluminum
  • Weathered Copper
  • Any original EPDM rubber roofing system
  • Fiberglass
  • Acrylic Sheet and any acrylic based products
  • Weathered Vinyl
  • Polyurethane Foam
  • Fleetwood models
  • Alpha Rubber
  • Roofs that were coated with a 3rd party roof coating.
Pricing and Ordering

Available Colors:

White Off White Gray Beige Light Beige Light Green
Light Blue Light Gray Forest Green Black French Press Tile Red

*Due to monitor settings, actual colors may vary from those that appear online. Please contact us for color samples if you need help selecting a coating.

*Butyl Liquid Rubber comes standard in white and black the other custom colors are available for an additional $10.00 per 5 gallon pail.



Butyl Liquid Rubber White 1 Gallon
Butyl Liquid Rubber Gallon Pail
Rated Star
Rated 4.5 /5 based on 671customer reviews
$79.00 In stock
Product description: Butyl Liquid Rubber - For residential and commercial roofing applications. Standard colors are White and Black.
Add to Cart Add to Cart
Butyl Liquid Rubber 4 Gallon Pail
Butyl Liquid Rubber 4 Gallon Pail
Rated Star
Rated 4.8 /5 based on 671customer reviews
$285.00 In stock
Product description: Butyl Liquid Rubber - For residential and commercial roofing applications. Standard colors are White, Black, Off White, Grey, Beige, Light Green, Light Blue, Forest Green and Tile Red
Add to Cart Add to Cart
Butyl Liquid Rubber 4 Gallon Pail
Butyl Liquid Rubber 5 Gallon Pail
Rated Star
Rated 4.8 /5 based on 762customer reviews
$305.25 In stock
Product description: Butyl Liquid Rubber - For residential and commercial roofing applications. Standard colors are White, Black, Off White, Grey, Beige, Light Green, Light Blue, Forest Green and Tile Red
Add to Cart Add to Cart

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