Breathable Membrane & Felt
Homefix supply quality brands and BAA approved range of breathable membranes for your DIY project or large site, from brands including Visqueen, Capital Valley, Radbar, Triton and Protect. Each breather membrane is of the highest quality, and are available at our affordable prices.
For any questions or queries regarding a particular roof membrane or product recommendations, just call our team on 01977 876116, use the live chat on our homefix website or email us at email@example.com and we will be more than happy to help.
What are breathable membranes?
A breathable membrane, or breather membranes, have been manufactured to improve ventilation and reduce condensation building up within a roof space or between walls, as well as ensuring insulation remains effective.
Do You Require Breather membranes?
Moisture will pass into the roof space from the rooms below. This vapour condenses when it reaches a cool surface such as a beam or structure. This condensation can cause a wide range of issues including health risks, as it is cannot escape from the roof space.
- If the insulation gets damp, the insulating properties are reduced, meaning the building is not insulated as well and will result in higher energy bills as the heat is lost more easily.
- The presence of moisture over time will cause damp and mould. Not only is this unpleasant, and can cause health issues, but can cause severe structural damage as moisture will cause rot on timber structures.
Homes on average produces 14 litres of moisture vapour per day, so it is vital to get rid of moisture and it does not remain within the roof space. Breather membranes stop moisture vapour from entering the roof space, and can in some cases allow moisture to leave the roof space. This helps keep the insulation dry and remains effective. Also, reducing the possibility of damp and mould happening is reduced keeping the structural and building strong and secure.
The types of different breather membrane
There are a number of different types of breather membrane available, depending on the requirements of the project being undertaken.
Vapour permeable breather membranes
Vapour permeable breather membranes allow water vapour to pass through the membrane and out from walls and roofs. Vapour permeable breather membranes minimise the amount of water vapour that condenses within the roof or wall space, helping to minimise damp, mould and rot.
Air permeable breather membranes
Air permeable breather membranes have been designed specifically to allow both air and water vapour to pass through the roof or wall of a building. Using an air permeable breather membrane removes the need for a vapour control level, because vapour and air can freely pass through the membrane, and the air permeable membrane also provides a form of ventilation.
Although air permeable membranes allow air and water vapour to pass through, they still act as a barrier to prevent rain, wind and snow from entering the roof or wall space.
Timber frame permeable breather membranes
Timber frame permeable breather membranes are slightly thinner and lighter than a more traditional breather membrane. They have been manufactured for use on buildings with timber frames, and particularly during the construction process – timber frame breathable membranes can be used as temporary cladding to protect the structure from external weather conditions during construction, and then protect from internal moisture build up during and after building work has been completed.
Vapour control layers
Vapour control layers are slightly different to breathable membranes. Vapour control layers (VCL) prevent any water from entering or leaving the roof space, ensuring that moisture does not transfer between layers or through walls or roofs and build up within the roof or wall space. This is different to breather membranes, which allow the movement through the membrane to ensure water vapour can leave the roof space.
Liquid breather membranes
In some cases, the structure of a wall or roof is quite complex, meaning fitting a breathable membrane is a challenge. In this case, a liquid breather membrane is the perfect solution - it can be applied with a paintbrush or roller, ensuring it covers the whole surface, including tight corners.