32+ Natural Slate Roof Pitch US. Does anyone know what the minimum pitch of a slate roof is? The top countries of supplier is china, from which the.
You know the pitch of the roof is quite shallow but you don't know whether it's too shallow.
Traditionally, natural slate roofs were not recommended below 20° pitch. For centuries, slate has been highly acclaimed for its natural beauty and remarkably superior longevity, unmatched by other materials. This area reduction, however, does not. Dense slates, with low porosity, likewise decay slower than slates with equal calcite, but with a greater porosity.