RIW Sheetseal GR - Gas Retardant Membrane
Verified by manufacturer 2 months ago
Sheetseal GR is a cold applied self-adhesive gas and waterproof membrane, with a high density polyethylene film bonded to aluminium foil and coated with a bitumen/rubber self adhesive layer.
Application
- Where protection against ground gas is required
- Basement tanking (internal and external).
- Retaining walls.
- Ground floor DPM.
Description
A cold applied, high density polyethylene film bonded to aluminium foil and coated with a bitumen and rubber self-adhesive layer with a removable reinforced silicone release paper. The product is typically used to reduce the passage of methane and carbon dioxide gasses on contaminated sites. The membrane must always be covered.
Sheetseal GR protects the structure against methane, carbon dioxide and radon from the ground. In addition, Sheetseal GR provides a water and water vapour barrier. When designing a Type A (barrier) protection (as classified in BS 8102:2022), the product applied correctly is capable of providing the levels of protection required for grades 1a, 1b 2 & 3 basements.
Features and benefits:
- Methane and carbon dioxide barrier.
- Water and water vapour barrier.
- Factory controlled thickness.
- Elastic and flexible.
- Damage easily repaired.
- No drying time.
- Selvedge strip to improve lap sealing.
Joint laps:
Side and end laps minimum 150 mm are recommended.
General information
Color | White |
Finish | Smooth Other |
Material | Bitumen |
Shape | Rectangle |
Length | 19050 mm |
Width | 1050 mm |
Height | 1.3 mm |
Warranty description | Ten year Manufacturer guidanceRIW Limited’s waterproofing products will, subject to normal service conditions, provide an effective barrier to the transmission of liquid water and water vapour for the life of the building in which they are incorporated. The products must be installed in accordance with RIW written instructions, and following installation must not be subjected to any damage or long-term UV exposure. |
Uniclass | |
CAWS | J40/180 Self-adhesive bitumen membranes J40/45 Self-adhesive bitumen gas retardant damp proofing/ tanking |
Specification data - Bitumen sheets
Classification data | |
Form | Gas-resistant, damp-proof membrane. |
Material | |
Carrier material | Polyethylene (PE). |
Gas inhibitor | Aluminium foil. |
Thickness (minimum) | 1.5 mm. |
Product Reference | RIW Sheetseal GR |
Primer | Not required. RIW Sheetseal Primer. Guidance for specification option: Used on all vertical or inclined substrates. RIW Sheetseal primer is a bitumen solution. |
Water vapour transmission | < 0.1 g/m²/24hr. |
Methane gas permeability | < 0.3 ml/m²/24hr. |
Sustainability data
Material | Bitumen |
BIM objects
NBS BIM Object Standard
This BIM object has been authored to meet the requirements of the NBS BIM Object Standard.
Find out more about the NBS BIM Object Standard.
| Platform | Compatible | Version |
|---|---|---|
 Revit | Revit 2016 | 2 |
 IFC | IFC2X3 | 1 |
Literature
RIW Sheetseal GR
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