JUTA GP® SAM (Self-Adhesive Membrane) is a bituminous gas proof and waterproof sheet, composed of self-adhesive SBS polymer modified bitumen incorporating an aluminium foil with an upper surface finish of white cross-laminated HDPE, and a lower surface finish of siliconized paper released film.

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  • Used for the gas/waterproofing of underground structures where harmful ground gasses are anticipated.



Roll weights can be in excess of 20kg (approx. 33kg/roll), hence appropriate care and equipment is required for unloading and handling. This product is non-toxic and non-flammable.


Rolls of JUTA GP® SAM should be stored horizontally, and pallets should not be stacked on top of one another. Store in a cool, dry place, and protect from exposure to rain, sun, heat, and cold temperatures prior to installation. Exposure to sunlight for extended period of time could cause difficulty with removal of the release film.



JUTA GP® SAM should be installed in accordance with the product installation guidelines, and in accordance with BS8485:2015. It is recommended that you do not apply in temperatures below 10°C, in colder weather, the material can be warmed slightly to aid adhesion.

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