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VPU
BBA approved, premium quality, vapour permeable underlay available in 2 weights.
Vapour Permeable Roofing Underlay 122g
Vapour Permeable Roofing Underlay 142g
Features:
BBA certified for use on both warm and cold roof structures
Water vapour resistance 0.20 MNs/g
Highly vapour permeable
Excellent nail and tear strength
Complies with BS5534:2003
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