Can You Put a Metal Roofing Over a Shingle Roofing?
https://enlinea.unitex.edu.mx/forums/user/egennamyvq/
We have a 1890's house with a combination Mansard design roof as well as conventional sloped roofing. We are opting for a mix roofing system (Malarkey Windsor Tiles on Mansard and also standing seam on slope) on