MemTech M1 Ground Gas Membrane

Ground Gas ProtectionDelta Membrane Systems Limited is the leading Type C Cavity Drain Membrane manufacturer in the United Kingdom.  Using our tried and tested methods and knowledge we are well versed in structural waterproofing and ground gas contamination ensuring any risks are mitigated using best practice in design and selection of gas membranes.

MemTech M1 is a flexible, loose laid ground Gas Barrier Membrane made from low-density polythene with a foil core layer.   MemTech M1 can be used as a gas barrier and damp proof membrane for application on concrete ground floors, above and below the slab (not subject to hydrostatic pressure), to protect a structure against moisture, radon, methane and carbon dioxide contaminates from the ground.

MemTech M1 will protect against the ingress of hydrocarbon Vapours where is it separated from the ground (e.g. above a block and bean floor).

Ground Gases and Contaminates

  • Hydrocarbons
  • Methane (CH4)Ground Gas Protection MemTech M1
  • Carbon Dioxide (CO2)
  • Radon (Rn)

MemTech M1

  •  3rd Party accredited/Independently  tested
  • BBA Certified
  • High resistance to puncture
  • Also acts as a Damp Proof Membrane
  • Complies with BRE211:2015 and BS8485:2015
  • Suitable for new and existing structures

Design and Specification

Delta offers complete Technical support at every stage of the specification and supply chain process. Our Technical Team offer superior knowledge and take into consideration relevant regulations, attention is given to BRE211:2015, CIRIA C665, C716, C735, C748 and BS8485:2015 and CIEH guide to Ground Gas.

Ground Gas Protectrion M1Delta’s Technical team are CSSW qualified (Certified Surveyor of Structural Waterproofing), offering reassurance that your system will do what you need it to do.

We attend site visits and understand your project, working as part of your technical team ensuring critical issues are addressed.  Our hands on approach allows us to understand in-depth needs and requirements whilst eradicating problems and making effective decisions.

Ancillary products include:

  • MemTechTop Hats
  • MemTech Internal Corner Cloaks
  • MemTech External Corner Cloaks
  • MemTech GP Primer
  • MemTech GP Void Vent 25
  • MemTech GP Protection Fleece
  • MemTech Liquid Gas Barrier (LGB)


MemTech M1 offers 2 application choices; tape jointed or thermal welding ensuring a secure, watertight joint. Memtech M1 Gas Membrane should be laid on either:  sand blinding, Memtech Protech Geotextile Protection fleece or a smooth concrete finish.

Product code:DMS402

If you'd like more information on any of our products, call 01992 523 523 today to speak to one of our experts