Gas Membranes:

Maclennan can design and install basement systems to be Radon, and all other ground gas proof By installation of applied external gas membrane systems or internal liquid applied roller or sprayed gas membrane and radon barrier systems.

The systems are guaranteed to prevent Radon, Methane and Carbon Dioxide.

External tanking and waterproofing can be combined where required.

The provision of a waterproof membrane to the outside of the basement or sub-structure in accordance with BS8102:2009 (Type A form of construction). Can also be a gas membrane.

Internal cavity drain membrane systems can be detailed as gas membranes / radon barriers when married up with suitable extraction or positive pressure systems. MacLennan will design a suitable GAS and waterproofing system where required.

Radon:

A radioactive gas associated with increased levels of cancer. Radon gas is tasteless and odourless and is highly hazardous for human beings hence the importance of an effective radon barrier. Radon Gas >>

Methane:

Forms an explosive mixture in air at levels of 5-16% by volume.

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    GAS MEMBRANE
    - For Extraction Of Radon Gas.
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    3D DRAWING
    Base Of Brick Wall
    - New Waterproofing Membrane.
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    GAS MEMBRANE
    - For Extraction Of Methane Gas.
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    3D DRAWING
    - Base Of Block Work Retaining Wall.
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Carbon Dioxide (CO2):

A toxic, asphyxiating gas, maximum permissible levels 0.5% by volume for long term exposure and 1.5% by volume for short term exposure.

BBA

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