Composite Slate
The unique look of composite slate is it’s main attraction. It also has a 50 year non~prorated warranty versus the 20 to 30 year life span of asphalt shingles. Asphalt shingle companies have a 10 year non~prorated warranty and after that it is prorated. So with the 50 year non~prorated they will cover everything up to 50 years without buying an extended warranty.