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Caravan Liquid Roof Technical Information

Since the 1980s, single ply EPDM membrane has established an outstanding performance record in waterproofing and roof repair. Liquid Roof is effectively a liquid version of EPDM membrane that was specifically designed for weatherproofing the roofs of caravans and similar vehicles.

In liquid form, EPDM is easy to apply and has two characteristics that set it apart from other elastomers: resistance to ultraviolet light and ozone, and the ability to withstand continuous exposure to temperatures over 150° C (302 °C).

Because Liquid Roof stays flexible for longer under harsh conditions, it has the best ageing properties of all comparable products.

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Technical Data

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 sq. m (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
Weatherometr: 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.
Heat Resistance: 150 °C (302 °F) continuous exposure
VOC: 295 g/litre (2.46 lb/gallon)

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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