How long does a mansard slate roof last?
By Sheena Owen Oct 5th, 2021
When installed properly using copper fasteners and ASTM S-1 roofing slate, a mansard slate roof will last well over 75 years. The Cabanne House located in Forest Park (St. Louis, MO) was completed in 1876. The Second Empire style house, most easily recognized by its distinctive mansard slate roof, was a popular style throughout St. Louis following the Civil War.