| 摘要 |
This invention relates to roof structures comprising a water barrier layer placed on a roof deck, a waterproof closed cell foam insulation placed over the water barrier layer and a protective layer of an inorganic mortar placed on the foam insulation. More particularly, the present invention is directed to roof structures of this type which utilize a specified styrene-butadiene as the protective layer. The improved roofing system has excellent resistance to weatherability, fire and mechanical damage and has unexpectedly enhanced resistance to delamination of the protective layer from the foam insulation. |
