Both breathable and non-breathable membranes have the same main purpose: to stop water from getting into the building and prevent mould.

Breathable membranes

A breathable membrane lets the building “breathe” by letting moisture inside the building to escape. Breathable membranes are waterproof; the material has very small pores that let water vapour out, but too small for rain droplets to get through. It is newer than the traditional non-breathable version and has become very popular in recent years. It works especially well under tiles or slates, as long as there is good airflow above.

Non-breathable membranes

Non-breathable membranes do not allow air or moisture through. They are used across the construction industry, but they better for roofs that already have built-in ventilation. These membranes are highly resistant, which makes them mainly suitable for cold, ventilated pitched roofs. Do not confuse them with a vapour control layer (VCL), which is fitted on the warm side of insulation to stop too much moisture from getting into the property.

What are the benefits of breather membranes?

• Helps stop condensation from building up in the roof
• Allows moisture to escape
• Can improve the building’s energy rating
• Reduces weak spots in insulation
• Makes indoor air fresher and healthier
• Less ventilation products are required, which could save money

Wonderbuilds Breather Membranes

At Wonderbuilds we have a range of breather membranes available. Choose from 1 metre length, or 1.5 metre length. We also have 4 options of weights to choose from: 100g, 115g, 140g, and 160g. If you have any questions about our breather membranes which you cannot find the answer to in this article, please do not hesitate to contact us at admin@wonderbuilds.co.uk.

FAQs

Should breather membranes be used within flat roofs or pitched roofs?

• Breather membranes should be used within pitched roofs

What is the purpose of a breather membrane?

• Helps to prevent condensation and mould

Are breather membranes waterproof?

• Yes, breather membranes are waterproof

Does the roof still need to be ventilated?

• Although breather membranes allow the roof to breathe, the roof will still require ventilation

Who can I contact if I need to stock up on breather membranes?

• Contact our friendly and professional team at admin@wonderbuilds.co.uk

Quick summary

Breather membranes are a very important aspect of roofing systems. They should be used on pitched roofs rather than flat roofs. They help to prevent condensation from building up. Wonderbuilds offers a range of breather membranes for your roofing projects.