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RIW Sheetseal 226 GR 300mm x 19.05m
RIW Sheetseal 226 GR 300mm x 19.05m RIW Sheetseal 226 GR 300mm x 19.05m

RIW Sheetseal 226 GR 300mm x 19.05m

SKU: 014226GR300
£139.90 EX VAT
2 company wide current stock level
Product Information
Technical Datasheet


Sheetseal GR is a cold applied, high density polyethylene film, bonded to aluminium foil and coated with a bitumen/rubber self-adhesive layer with a removable reinforced silicone release paper. The product generally requires a primer for vertical or sloping surfaces, ie. Sheetseal Primer.

Sheetseal GR is typically used where a methane and carbon dioxide gas barrier is required, combined with the waterproofing.

When designing Type A structures (as classified in BS8102:2009), the product applied correctly, is capable of providing the levels of protection required for grades 1, 2 & 3 basements. Sheetseal GR has been tested by Wimpey Laboratories for methane gas resistance. The test results are outlined within the product data sheet.


  • Where methane is present in the ground
  • Basement tanking (External)
  • Basement tanking (Internal)
  • Retaining walls
  • Ground floor DPM


  • Suppresses Methane and Carbon Dioxide
  • Water and water vapour barrier
  • Factory controlled thickness
  • Quick and easy to install
  • Elastic & flexible
  • Self healing properties
  • No drying time
  • Sulphate resistant