GeoShield Cardiff

Independent Testing, Validation & Verification


Systems Designed to Protect Against Ground Gas Ingress


Conforming with all relevant European Standards
BS 8485:2015+A1:2019 , CIRIA 735 (2014), International Radon Measurement Association & ISO EN 9001:2015

Since 2015 building & design requirements Worldwide have started to get restructured with the aim of minimising all probable aspects that relate to the failing of systems implemented to protect against harmful ground gas ingress into new buildings.

The spearhead of all of these changes was in the UK with the up-dated version of the British Standard for Good Practice on the Testing and Verification of Protection Systems for Buildings against Hazardous Ground Gases. BS 8485:2015+A1:2019 , this superseded all previous guidance. BS 8485:2015+A1:2019 running along with the CIRIA 735 code of practice ‘Independent Verification & Testing Programs’ has now been harmonised by many EU Countries.

BS 8485:2015+A1:2019 sets the codes of practice which regulate the installation of gas membrane systems meant to safeguard against the ingress of Methane, Carbon Dioxide and has annexes relating to Radon & VOC’s.

Dependent on the different project requirements independent gas membrane inspection is now often mandatory to ensure every effort is made to reduce the risk to life.

For projects of CS2 & above (British Standards)/ Amber 2 (NHBC) an Independent Testing and Verification program is required as an essential part of the project strategy.

The membrane verification company is usually required to be employed before construction.

GeoShield Limited are founder members of the British Verification Council and are ISO EN 9001 and ISO EN 14001 Accredited.

GeoShields Gas Membrane Validation, Verification & Testing solutions are at this time underway across Europe including projects in the United Kingdom, the Republic of Ireland, Romania, Croatia, Belgium, Turkey and as far east as the Philippines.

The GeoShield Verification Package is in accordance with all insistences made by the British Verification Council including ₤ 2,000,000 PI Insurance which is specific to Verification.

GeoShield GSR+ Radon Gas Protection Validation, Verification and Monitoring

The GSR+ Quality Assurance Program is a comprehensive hand-over document created for house builders and developers to pass to future owners. GSR+ provides new buyers with a historical log of the protection system application, ensures peace of mind and assists in conveyancing.
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Independent Ground Gas Protection Verification Services

In 2015 the British Standard for Good Practice on Gas Membrane Testing and Verification of Protection Systems for Buildings against Hazardous Ground Gases was updated, BS 8485:2015+A1:2019 supersedes all previous guidance.

BS 8485:2015+A1:2019 operating alongside the CIRIA 735 code of practice states Independent Membrane Verification and Testing Programs are as important as the design and installation process.

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