Protect Wunderlay is a heavy-duty type HR roofing underlay, designed for all cold and warm pitched roofs in conjunction with the provision of ventilation at eaves and ridge. The product can be used with a well-sealed ceiling and a separate air and vapour control layer on the warm side of the insulation or where the ceiling is not well-sealed as in a re-roofing application.

Features and benefits:

Completely water and airtight.
UV and heat resistant.
Good nail tear and tensile strength for its weight.
Does not generate nuisance noise under wind loading.
CE marked and BM TRADA certified.
Absorbent under surface prevents condensate drip off.
Embossed dark grey upper surface reduces glare and takes a chalk line marking.
Easy to cut and handle.
Achieves Zones 1-4 at 345 mm batten gauge (1367Pa), when tested to Annex A of BS 5534, ensuring wide coverage across the UK and throughout Ireland
Achieves Zones 1-5 at 310 mm batten gauge (2145 Pa).
Developed to overcome the disadvantages of traditional Type 1F and 5U felts and second generation plastic sheet materials.
Provides a secondary line of defence against wind-driven rain and snow and resistance to wind uplift.

Protect Wunderlay BM TRADA Schedule No CPS-009