As your trusted gas membrane installation specialist, we thought it would be useful to offer a little more information in regard to what they are, how they work, and the benefits they bring to a construction project. 

What is a gas membrane? 

Gas membranes, also known as gas barrier membranes or gas separation membranes, are materials designed to selectively allow certain gases to pass through whilst blocking others. These membranes are used in various applications such as gas separation, purification and concentration processes. 
 
Gas membranes work based on the principles of permeation, where gases diffuse through the membrane material at different rates depending on factors such as their molecular size, solubility and diffusivity. This selective permeation allows for the separation of gas mixtures into their individual components. 

The benefits of gas membranes 

Gas membranes offer several benefits for houses and other types of buildings, particularly in the context of construction and environmental safety. Some of these benefits include: 

Radon protection 

Radon gas is a significant concern in many parts of the UK, particularly in regions with certain types of geology. Gas membranes installed beneath the building's foundation act as a barrier, preventing radon from entering the indoor space. This helps to reduce the risk of radon exposure for occupants, which in turn lowers the risk of lung cancer associated with prolonged exposure to high levels of radon. 

Compliance with building regulations 

Building regulations require measures to be taken to mitigate the risk of radon infiltration in new buildings and extensions, particularly in radon-affected areas. Gas membranes are recommended or required by organisations that operate in the construction sector, such as the National House-Building Council and the Property Care Association. 

Moisture control 

Gas membranes also function as vapour barriers, helping to prevent moisture from seeping into the building’s wider infrastructure. This is particularly important in the UK's damp climate, where moisture infiltration can lead to mould growth, structural damage and indoor air quality issues. By controlling moisture ingress, gas membranes contribute to a healthier and more comfortable indoor environment. 

Energy efficiency 

Certain types of gas membranes can contribute to improved energy efficiency by acting as air barriers, reducing heat loss during the winter and heat gain during the summer. This can lead to lower energy consumption for heating and cooling, resulting in cost savings for homeowners and reduced carbon emissions. 

Long-term building durability 

Gas membranes help to protect building materials from damage caused by moisture infiltration and other environmental factors. By preserving the integrity of these materials, gas membranes contribute to the long-term durability and resilience of the building, reducing the need for costly repairs and maintenance over time. 

Get in touch about gas membranes 

If you require gas membranes or waterproofing on any scale, please fill in our contact form to book a callback from a National Waterproofing Group member in your local area. 
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