Many types of roofing are available – asphalt or asbestos-cement shingles, roll roofing, galvanized steel, aluminum, wood shingles, slate, and others. They vary in durability, fire resistance, insulating value, and other properties.
Make your own selection carefully, whether you are covering a new building or re-roofing an old one. Some important considerations in selecting roofing are roof slope, weight of roofing material, cost, fire resistance, appearance, and location.
Read whole article here: Practical Tips on Buying Roofing Materials