Visqueen Ultimate VOC BLOK

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The object content is configured for use in UK, but it may also be suitable for use in other locations.


Visqueen Ultimate VOC BLOK is a flexible membrane designed to comply with current guidance on Volatile Organic Compounds (VOCs) and ground gases. Manufactured using Visqueen’s advanced barrier technology and drawing on our extensive knowledge and expertise in gas protection, VOC BLOK is a flexible barrier membrane suitable in brownfield applications that are affected by aggressive chemicals such as Benzene, Toluene, Ethyl Benzene and Xylene (BTEX).

The product is available in large roll formats to minimize jointing and allow quick installation times. The membrane is grey and black and 2.44 m x 41 m x 1 mm (100 m), in single-wound roll format and packaged in a blue outer wrap. The membrane should be installed grey side up.

  • Conforms in full to CIRIA C748 and BS8485:2015.
  • Excellent VOC and methane barrier resistance.
  • Comprehensively tested and validated test results.
  • Flexible even at low temperatures – limits stress cracking.
  • Welding and Visqueen Gas Resistant tape system options.
Platform Compatible Version Certified to
IFC IFC - 1 1.3
Revit Revit 2016 + 1 1.3

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