PHS 210 Breather Membrane is a triple layer fabric, external weathertight membrane, made from high tensile spun bonded polypropylene layers, around a micro porous polypropylene film. The upper surface is black and printed with the PHS trade name and overlap lines. This outer, printed layer forms the functional waterproof surface, the middle layer is the breathable waterproof membrane, the inner layer protects the membrane from abrasion and damage, allowing vapour pass through, while remaining waterproof.
The PHS 210 is designed, manufactured and quality assured for use on fully supported or unsupported tile, slate and metal roof systems and facades. It acts as a secondary barrier to wind driven rain and snow, it should not be considered a primary waterproofing layer. It has excellent vapour permeability, high tensile and tear strength, long term durability and excellent wind uplift resistance. It is especially suited for roofs and facades in harsh, weather exposed conditions, including costal locations.
Application
Passive House Systems breather membranes should be installed correctly, in accordance with the BS 5534 Code of Practice and with the PHS trade name facing upwards. The installer must ensure compliance with relevant building regulations. While these membranes can withstand UV exposure for up to three months, it is best practice to install the primary waterproofing finish, such as tiles and slates, as soon as possible.
Tile & Slate Roofs: The membrane should be laid horizontally across the rafters starting at the eaves and secured in place with either battens or counter battens, and overlaps sealed with PHS Argo Plus (Multi-Tape).
Wood Preservation: If there is a risk timber components will be exposed to moisture then these areas should be treated with approved preservatives. After treatment, the wood should be allowed to return to a moisture content with an average less than 20% moisture with no reading above 22% at time of fixing.
Health & Safety: Roofing is a hazardous activity and statutory legislation applies to all types of roof work. Please
refer to the Health and Safety Authority guidelines for working safely at height
