Everbuild Black Jack 903 Bitumen Trowel Mastic – 5 Litre 
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Klober 20K Slate Vent KG9795-0429 Slate Grey 
Hedgehog Gutter Brush Leaf Guard White – 4m x 100mm 
Ronseal One Coat Damp Seal - White 750ml 
Code 8 Cast Lead - 1200mm x 3m 
Bond It Silicone Release Spray - 500ml Clear (Mould Releasing Lubricant) 
Everbuild Everflex Premium+ 565 Clean Room Silicone – White 295ml 
ALM Code 6 Milled Lead Flashing - 760mm x 3m 
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Bostik Flashband Self Adhesive Flashing Tape – Grey 3.75m x 75mm 
Code 6 Cast Lead - 180mm x 6m 
Everbuild Showerproof Bathroom Silicone - Clear 280ml (Box of 12) Non-Breather Membranes
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Non-Breather Membranes
Non-breather membrane, also known as a high-resistance membrane, is a type of roofing felt that does not permit vapour through. These are specially made for “cold roof” houses, which have insulation between the rafters. In these sorts of houses, a non-breathable membrane would be impractical.
This is because in a cold roof house the loft or “roof void” is colder than the house below, rather than at a similar temperature. This is popular in places for instance with heavy snow, because it helps prevent the formation of ice dams on the edges of roofs. This is because the warm roof will melt the snow into water, which will build upon the colder edges of the roof and refreeze. Cold roofs will leave the snow in place till it melts alongside the snow on the edges of the roof.
At ERoofing, we stock high-quality non-breather membranes from brands like Cromar. Don’t forget roof ventilation is even more important in houses with non-breather membranes. You can see our selection of top felt vents here.
