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A Proctor Group
Walls & Partitions ">> Structural Components & Protection > Underground Gases Protection

Protech GM Super

by A Proctor Group

Protech GM Super

by A Proctor Group

HomeProductsGround Gas ProtectionProtech GM Super

Protech GM Super Gas Membrane is a reinforced LDPE, loose - laid, gas barrier that incorporates an aluminium foil layer to provide maximum protection from the ingress of Methane, Carbon Dioxide and Radon in new developments. The membrane is fully compliant with the recommendations made in Ciria 665, BS8485 and The Local Authority Ground Gas Handbook when installed in accordance with BRE 414.


Protech GM Super is a high performance proprietary reinforced gas barrier that has been specifically designed to conform with the latest guidance documents. Due to its unique composition, the membrane is extremely robust and flexible and, as a result, easy to install on site. The membrane also provides protection from damp and, therefore, there is no need to install a separate DPM.

BBA Certified

Full range of accessories to ensure that the membrane is gas tight

Aluminium Core for reduced methane permeability on higher risk sites

Reinforced for superior tear resistance and reduced elongation

Compatible with the Provoid Gas Venting System

Manufactured from High Grade Virgin Polymer


Gas protection systems are critical in developments constructed on sites affected by permanent

ground gas and/or volatile organic compound (VOC) contamination. Systems are designed using the

methodology which is set out in various advisory documents and legislation. The primary purpose is

the prevention of hazardous gases and contaminants from the underlying soils that may cause harm

to occupiers. A well-designed system should also perform the function of a damp-proof membrane,

assisting in preventing the uptake of moisture into the construction.

Whatever your requirement, our head office team of highly trained specialists is on hand to provide

technical advice to assist in all aspects of designing gas protection systems. From recommending the

ideal level of protection for a particular site, through to selection of suitable materials, and advice on

detailing, our team will work with you to ensure that all elements are covered.

As part of providing this complete service to customers, we have developed relationships with strategic

partners; these include:

• Consultants specialising in all aspects of gas protection system design

• Specialist installation sub-contractors

• Consultants offering independent verification of gas protection installations

The A. Proctor Group can facilitate contact between our clients and professional companies in the field

of gas protection systems, who can offer quotations for:

• Full design of systems in line with site-specific investigation, and remediation strategy covered by £1m

professional indemnity

• Installation of gas protection measures by CSkills NVQ Level 2 qualified installation contractors

• Verification by independent consultants providing validation plans including relevant levels of integrity

testing specific to site risks

The A. Proctor Group has been a contributor and funder to various CIRIA advisory documents

including C665, C716 and C735.



Protech GM Super

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Specification Details for Protech GM Super (Underground Gases Protection)

Please note that these product properties are not a replacement for the manufacturer's literature and it is always recommended that A Proctor Group is consulted before specifying.

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