Metal Roofing as well as House Ventilation
https://papa-wiki.win/index.php/Pros_and_Cons_of_Steel_Roof_Coverings_for_Your_House
We have a 1890's house with a mix Mansard style roofing as well as typical sloped roofing. We are opting for a mix roofing system (Malarkey Windsor Tiles on Mansard and also standing seam on slope) on the replacement.