Roofing/Insulation for Low Slope Mid Century Modern House
Recently purchased this house just outside Toronto Ontario. The roof is shot and currently has two layers of singles on it. There is no attic at all – interior ceilings are valted. Wondering what type of roof to go with – metal or ashpalt singles? And would it be wise to add some insulation under the roofing material? Say add three inches of polysterne and a 1/2 inch layer of OSB under the roofing?