Liquid Rubber EPDM Properties & Technial Information
Only true EPDM in Liquid form in the World
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Liquid Rubber EPDM Properties & Technical Information

Liquid Rubber 950ml

Liquid Rubber is a true EPDM rubber and therefore could be described as a liquid version of the single-ply EPDM membrane that has established an outstanding performance record for over 50 years.

The EPDM chemistry has proven over many decades that it is has the best resistance to UV and weathering of all the membranes used for roofing. This feature is what gives EPDM rubbers the best aging properties of all the elastomers, as it retains flexibility longer.

It can be used for so many projects but where it really comes into it's own is on metal roofs and old EPDM membranes. These substrates do not require a primer and only minimal preparation.

We have many different chemistry rubbers, each with it's own properties and best places to use it. Why not give us a call about your project and we can recommend what to use and how to use it.

For Liquid Rubber coverage rates, surface preparation, mixing directions and cure conditions, visit our How to Apply Liquid Rubber page.


Volume Solids: 63.5%
Spreading Rate: A 0.5 mm (0.02 in.) dry film will result when liquid is applied at the rate of 46 ft2 per gallon on a smooth surface. 
  A rate of 3.7–4.0 m2 (40–42 sq. ft) per gallon allows for average surface roughness.
Theoretical Coverage: 95 m2 (1020 ft2) per gallon at 0.025 mm (0.001 in.) dry.
Weight per Gallon: 3.63 kg (8 lb) when mixed
Elongation: 180-200%
Brittle Point: -52 °C (-62 °F)
Permeability: 0.1 perm
Weatherometer: 2000 hours (ASTM D4459-8-03)
Peel Adhesion: 14.8 N/m (4.85 lb/linear inch) on Firestone EPDM.
Pot Life: 4-10 hours depending on temperature.
Cure rate at 70° F: 7-8 hours to touch

24-30 hours to walk on

5-7 days full cure
Thinner: Most aliphatic and aromatic hydrocarbon solvent (mineral spirits, VM&P Naphtha, Xylol). Weaker solvents should be used when coating EPDM rubber sheet to minimize distortion.
Chemical Resistance: Cured EPDM rubber is resistant to acids, alkalis and polar solvents (alcohols, ketones and glycols). Oils and fats will soften the rubber and should be avoided.
Cure System: Two component Peroxide initiated free radical cure

The information presented herein is furnished free of charge and is based on technical data that we believe to be reliable. It is intended for use by persons having technical skill and is at their own discretion and risk. Since conditions of use are outside our control we make no warranties, express or implied, and assume no liability in connection with any use of this information. Nothing herein is to be taken as a license to operate or a recommendation to infringe any patents.

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