GGM 400 Gas Membrane - Loose Laid Sheet Membrane
Verified by manufacturer 2 months ago
Loose laid sheet membrane system designed to protect buildings against the ingress of methane, radon, carbon dioxide, hydrocarbon vapours and water vapour.
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
GGM 400 Gas Membrane is a high performance, reinforced polyethylene loose laid membrane incorporating a gas resistant aluminium foil.
GGM 400 is 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
Color | Green |
Finish | Textured |
Material | Polyethylene Aluminium Manufacturer guidanceHigh performance, reinforced polyethylene membrane incorporating a gas resistant aluminium foil. |
Shape | Rectangle Square |
Length | 50000 mm |
Width | 2000 mm |
Height | 0.4 mm |
Warranty description | Ten year |
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. |
Form | Reinforced. |
Root inhibitor | Aluminium foil. |
Physical properties | |
Colour | Green. |
Weight (minimum) | 360 g/m². |
Dimensions | |
Thickness (minimum) | 400 µm. |
Width (minimum) | 2 m. |
Roll length (minimum) | 50 m. |
Moisture vapour transmission rate | <0.03 g/m²/day. |
Radon transmittance | <1x10-9 m/s. |
Methane transmission rate | <0.005 ml/m²/h/atm. |
Sustainability data
Material | Polyethylene Aluminium Manufacturer guidanceHigh performance, reinforced polyethylene membrane incorporating a gas resistant aluminium foil. |
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 |
|---|---|---|
 IFC | - | 1 |
 Revit | - | 1 |
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