Air & Vapour Permeable Underlays

Our vapour permeable and air open underlays feature meltblown technology within the membrane core to allow ventilation into the roofspace through the material, and vapour to escape – controlling the risk of condensation. Whilst specifying an air-permeable underlay may involve a higher initial cost, there is usually no additional need to ventilate – which saves time and labour on installation. We can work with you to determine the exact needs of your project and advise on exceptions and extra considerations, such as hydrophobically treated underlays.