How Do Roof Breathable Membranes Work?

Breathable membranes are a unique form of insulation material. They are particularly valuable when used in pitched roof projects as they prevent the build-up of condensation. This can lead to damp, mould and rot. Which, in turn, can lead to structural damage within a building. A breathable membrane can prevent these problems from occurring. But what are breathable membranes? How do they work? And why are they so important? Here’s everything you need to know about breathable membranes:

Why Are Breathable Membranes So Important?

Breathable membranes are important because they help to prevent damp. They can also keep mould at bay, with damp often being the root cause of mould. Damp can cause breathing problems in affected homeowners or tenants. It can also lead to frost damage or structural damage if left unchecked. For this reason, breathable membranes should be considered essential. They allow insulated buildings to release surplus moisture vapour into the air. In short, breathable membranes ensure that properties remain dry whilst still being able to breathe. 

Another benefit of breathable membranes is that they make insulation work more effectively. Without a breathable membrane, moisture will build on the insulation. This layer of moisture will make the insulation ineffective. This will leave your home vulnerable to heat loss, and increased heating bills. 

What Protection Do Breathable Membranes Provide?

Whilst they may be relatively thin layers of material, breathable membranes are strong. They are water-resistant, snow-resistant, and dust-resistant. They ensure that anything you don’t want in your property stays out! For this reason, breathable membranes are ideal for use in situations where exterior cladding is not completely watertight. Tiled roofs or framed wall constructions are great examples of this.

One of the most frequently asked questions about breathable membranes is ‘how do breathable membranes work?’ In short, breathable membranes work by providing ventilation and reducing condensation risk, whilst still providing a waterproof layer of protection. Breathable membranes prevent water from entering a property. They also serve the secondary purpose of preventing environmental impurities, such as dirt or rain, from entering the structure. Breathable membranes protect properties from damage and keep them watertight. They also have thermal benefits, helping to insulate the property in many cases.