Monarperm Breathe One has been manufactured from a laminated polymer film trapped between two layers of polypropylene fabric to be installed in wind up-lift zone 1 with less than 345mm overlaps under battens without lap tape. The vapour permeable membrane is an underlay for discontinuous roofing pitched and over rafter applications in ventilated and non-ventilated roofs.This Monarperm Breathe One vapour permeable membrane can also be used as a temporary waterproofing cover for up to 3 months, with the UV stabilized blue topside protecting your build from the sun and adverse weather. Its just 0.43mm thick and also has capabilities ot be a secondary layer in the building envelope to protect against wind-driven rain and snow as well as being an underlay in vertical weatherboarding and rain screen cladding.This product is highly puncture and nail tear resistant and is compatible with most common roof substrate materials. Please note: Icopal Monarperm Breathe cannot be used with solvent-based timber treatments.More information on Icopal Monarperm Breathe One can be found in the data sheet here, alternatively call 01752 692 706 for expert roofing and insulation advice.Icopal Monarperm Breathe One propertiesWidth: 1.5mLength: 50mThickness: 0.43mm