10 Metres Long & 1 Metre Wide. Chestershed Poly Mineral is a waterproof protection layer for use on portable type buildings with pitched roofs, such as sheds, stables, kennels and non-inhabited buildings. It features a polyester base which is saturated and coated in SBS modified bitumen and finished with light sand on the lower surface and green mineral granules on the upper surface
• Longer life than traditional shed felt • Natural slate mineral finish • UV protected • 10 year life expectancy (when fitted to Chesterfelt instructions). The upper surface of the membrane is protected using mineral granules, which are sourced from natural quarrying. The colours of the minerals therefore can sometimes vary depending on seam depths and extraction positions within the quarry. However, after the effects of the weathering and ageing, any variations will become less visible.