TYPE HR ROOF UNDERLAY WUNDERLAY Protect Wunderlay is a lighter alternative to Protect A1 type HR roofing underlay, developed to overcome the disadvantages of traditional Type 1F and 5U felts and second generation plastic sheet materials. It has good strength and nail tear resistance and is independently certified by BM TRADA. Protect Wunderlay provides a secondary line of defence against wind driven rain and snow and resistance to wind uplift. Being entirely waterproof it can be used as a temporary roof covering. Construction Products • Completely water and air tight. • UV and heat resistant. • Good nail tear and tensile strength for it’s weight. • Does not generate nuisance noise under wind loading. • CE marked and BM TRADA certified. • Absorbent undersurface prevents condensate drip off. • Embossed dark grey upper surface reduces glare and takes a chalk line marking. • Easy to cut and handle. • Can be used as a temporary roof covering.

Specification clause Roofing underlay to be Protect Wunderlay supplied by Protect Membranes Ltd, 2 Brooklands Road, Sale, Cheshire, M33 3SS. Telephone: 0161 905 5700. Fax: 0161 905 2085. Email: [email protected]. Underlay to be of twin ply construction,120gsm with polypropylene non-woven spunbond and LDPE/PP film to achieve a hydrostatic head of >2.0m. Under surface to have absorbent surface to prevent condensate drip off. Underlay to be laid in accordance with BS 5534 and manufacturer’s instructions. Size Roll width: 1.0m or 1.5m Roll length: 45 or 30m Roll total area: 45m2 Roll weight:...