When it comes to the challenge of waterproofing and gas proofing a below-ground structure, Newton Waterproofing Systems, the UK's leading independent designers and suppliers of guaranteed waterproofing systems, stock a range of products that combine effective waterproofing and gas protection.
Section 4 of the British Standard for Waterproofing, BS 8102:2009 states "it is essential for the success of any project involving below-ground structure that strategies for dealing with groundwater, soil gases and contaminants are considered". Consequently, Newton Waterproofing will always recommend waterproofing products that also have third-party tested gas resistance.
Combining Waterproofing and Gas Protection Below Ground
Newton has a complex range of products that meet the necessary criteria for use as protection against below ground gases.
Included, the third-party certified HydroBond 403 PLUS GB, which meets with Annex C and Section 7.2.4 including table 7 of British Standard 8485 (the Code of Practice for the Design of Protective Measures for Methane and C02 Ground Gases for New Buildings) and provides resistance to methane, hydrocarbons and C02. This is an addition to radon in accordance with BRE211 (2015).
Suitable products must always be paired with a sensible design, however, as with the best waterproofing practice, the most effective combined gas and waterproofing designs combine multiple forms of protection. They always include a Type C cavity drain system membrane system. When vented to external air or positively pressurised, the Newton CDM system, using the 508R membranes, can also contribute to gas resistant designs.
With a huge commitment to delivering comprehensive gas solutions, Newton is proud to have partnered with innovative and market-leading Scottish manufacturer A. Proctor Group, meaning we can now supply their range of high-performance ground gas barriers nationwide.
These include Protech GM Super, a high-performance reinforced gas barrier that incorporates an aluminium foil layer for maximum protection against ground-borne gases. The membrane is extremely robust and flexible and is therefore easy to install on-site, while also providing protection from damp when placed below the slab, meaning there is no need for a separate DPM.
Newton also supplies Protech VOC Flex, a high performance, six-layer flexible reinforced VOC gas barrier suitable for use on brownfield sites that require protection from dangerous contaminants, like hydrocarbons.
Protech VOC Flex has also been developed to ease installation on-site due to the flexibility of the membrane and is also suitable as a high-performance damp proof membrane.
Protech GM Super and Protech VOC Flex have both been BBA certified to protect against radon, methane and CO2.
"A. Proctor Group has been operating for many years, originally manufacturing textiles and supplying to Scotland's mills. The company's portfolio has developed very impressively since then, and in the 1990s grew to include a range of ground gas protection membranes. Today, Newton Is proud to be partnered with an innovative company that can provide well-designed systems, preventing hazardous gases and contaminants in the ground from causing harm to a property, as well as performing the function of a damp proof membrane." Warren Muschialli, Managing Director at Newton Waterproofing.
For gas proofing help and advice on your next project, contact Newton on 01732 360 095 or email [email protected]
