A warm roof vapour barrier goes above the plyboard and below the insulation and can either be glued or screwed down. Because its function is so critical to the building structure only good quality materials should be used, and installation completed correctly.
Permaroof Kent use only high quality roofing and vapour barrier materials on all our flat roofing projects. In addition, we offer insurance-backed workmanship guarantees and long materials warranties for your peace of mind.