1.4m & 2.8m Wide Tyvek Housewrap Breather Membrane by the metre CHEAPEST on eBay
ONCE I'M GONE THEY WILL RAISE THE PRICES. Can be left exposed for four months without losing its full performance. BBA Certificate: 90/2548. Fixed directly to insulation. UV exposure: 4 month. Enhances airtightness when used.