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GGM 400 Gas Membrane
NBS BIM object standard Verified by manufacturer over a year ago
Loose laid gas membrane.
Application
- Sites with medium to high level gas concentrations.
- Sites with low to medium level hydrocarbon vapour contamination.
- Ground bearing concrete slabs.
- Suspended concrete slabs.
Description
Loose laid sheet membrane system designed to protect buildings against the ingress of methane, radon, carbon dioxide, hydrocarbon vapours and water vapour. The multi-layered laminate structure gives good strength, flexibility and installation properties. The upper surface of the membrane is coloured green.
Features and benefits:
- Fully compatible with Preprufe and Bituthene membrane systems to form an integrated waterproof and gas resistant protection system.
- Prevents the transmission of methane, radon and carbon dioxide gases.
- Resistant to hydrocarbon vapours.
- Fully bonded lap system.
- Robust – resistant to on-site damage.
- Good puncture resistance.
- High tear and tensile strength.
- Flexible – can accommodate normal building movements.
- Weldable.
General information
Shape | Circular Roll |
MaterialHigh performance, reinforced polyethylene membrane incorporating a gas resistant aluminium foil. | Polyethylene Aluminium |
Size | 2 x 50 m |
Uniclass | |
CAWS | J40/140 Loose-laid plastics or rubber sheet gas-retardant membranes J40/145 Loose-laid weldable polyethylene gas-retardant membranes |
Specification data - Plastics sheets
Material | High-density polyethylene (PE-HD). |
Purpose | Gas retardance and water resistance. |
Performance characteristics | - |
Tensile strength (minimum) | >9 kN/m. |
Tear resistance | >350 N. |
Resistant to underground gases | Carbon dioxide / Methane / Radon. |
Root inhibitor | Aluminium foil. |
Physical properties | - |
Weight (minimum) | 360 g/m². |
Dimensions | - |
Thickness (minimum) | 0.4 mm. |
Width (minimum) | 2 m. |
Roll length (minimum) | 50 m. |
Product Reference | GGM 400 Gas Membrane |
Moisture vapour transmission rate | <0.03 g/m²/day. |
Radon transmittance | <1x10-9 m/s. |
Methane transmission rate | <0.005 ml/m²/h/atm. |
Digital objects
| Platform | Compatible | Version | Certified to |
|---|---|---|---|
 Revit | - | 1 | 2.1 |
 IFC | - | 1 | 2.1 |
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