Tri-Gas Membrane is a high performance gas membrane for use in situations where resistance to methane, carbon dioxide and/or radon gas is required. It is generally used within construction applications, predominantly within the foundation design. The multilayer 0.4mm thick membrane includes an ultra-low permeability aluminium foil core encapsulated between a number of additional LDPE layers and a reinforcing grid to form a single sheet membrane.
Features
- Excellent resistance properties with low permeability to ground gases including methane, carbon dioxide and radon
- Provides additional damp proofing protection to the structure (no requirement for a separate DPM)
- Reinforced membrane construction with excellent resistance to both puncturing and tearing
- Complies with relevant industry codes and guidance including BS 8485:2015 + A1:2019, CIRIA and BRE
Applications
The use of the Tri-Gas Membrane is suggested where combined gas protection and damp proofing is required. The membrane is a loose-laid product suitable for use in most horizontal and some shallow vertical including beneath reinforced concrete slabs and associated foundations.
Suitability
Suitable for use in conjunction with the Gas Resistant Self Adhesive Membrane and Gas Resistant DPC for protection against the ingress of methane, carbon dioxide, radon and damp.
The Tri-Gas Membrane can be installed with the use of either welded or taped joints depending on the specific project requirements.
| Product | VOCs including hydrocarbons | Methane | Carbon Dioxide | Radon |
|---|---|---|---|---|
| Puraflex VOC Membrane | ||||
| Tri-Gas Membrane | ||||
| Gas Resistant Self Adhesive Membrane | ||||
| Radon Membrane |
Note: All membrane types also provide damp proofing protection, however should there be the additional risk posed by hydrostatic water pressure, please contact a member of the Cordek Technical Team for additional advice.
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Downloads
Data Sheets
| Product | Issue Date | Version | Size | Download |
|---|---|---|---|---|
| Tri-Gas Membrane Datasheet | 06/2019 | 1 | 275.3 KB |  |
Standard Details
MSDS Data Sheets
| Product | Issue Date | Version | Size | Download |
|---|---|---|---|---|
| Tri-Gas Membrane MSDS | 06/2019 | 3 | 126.4 KB | |
Certification, Approval & Guidance
| Product | Issue Date | Version | Size | Download |
|---|---|---|---|---|
| BBA Certificate - Tri-Gas Membrane | 04/2022 | 1 | 416.2 KB | |
Brochures
| Product | Issue Date | Version | Size | Download |
|---|---|---|---|---|
| Construction Solutions | 01/2020 | 2 | 6.6 MB | |
| VOC & Ground Gas Protection | 07/2019 | 4 | 4.0 MB | |
Installation Guides
NBS Clauses
Our NBS Clauses are hosted on the external website - view NBS Clauses
BIM Library
Please select the BIM file in the format you require.
| Name | IFC Size | IFC Download | Revit Size | Revit Download |
|---|---|---|---|---|
| Tri-Gas Membrane | 10.7 KB |
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1.2 MB |
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