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Welcome to the website of Doncaster Membrane Installations Ltd.

Doncaster Membrane Installations Ltd ( DMI) are a Specialist Geo-Engineering Sub-Contractor with a particular expertise in the Design,Supply, Installation and Validation Gas Protection Measures.

These are commonly installed to protect against ingress of contaminants and soil gases in domestic, commercial and industrial buildings, including:

  • Methane
  • Carbon Dioxide
  • Hydrocarbon Vapours
  • Radon

Our close allegiances and partnering with leading product manufacturers allows us to provide cost effective, fit for purpose solutions designed to both CIRIA C665 and the NHBC (Witherington and Boyle) documents.