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Marley Waterproofing's Gas Resistant Barrier System consists of Gasgard DPC and GasSeal DPM, providing an effective barrier within the cavity, floor or basement construction against methane, carbon dioxide and radon.

Marley Waterproofing's Gas Resistant Barrier System has been independently approved by the British Board of Agrément, certificate no. 97/3353.

The system is used where construction conditions necessitate the prevention of methane, carbon dioxide and radon gases from permeating into the structure of a building.

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