gallonsquare feet. Other websites say a gallon will cover 400-450 square feet of smooth surface. If you've got a rough textured surface or surfaces which need 2 coats of paint, a gallon will cover about 200 square feet. The above answer may be a general rule of thumb.
Highly rated roofing contractors tell us that asphalt is the most affordable roofing option, followed by wood, tile, metal, and slate. Materials for a metal roof can cost up to $350 to $1,500 per 100 square feet. Angie's List members recently reported paying an average of $12,236 for a metal roof installation.
Aluminum Shingles: This is one of the most popular types of metal roofs installed. Materials prices range between $375.00 â $550.00 per roof square including the trim. Installation starts at around $900 for a basic roof, without a tear-off.Standing Seam: Prices start at around $500 for materials and $1,100 for installation, without the old roof tear-off. Copper is a superior quality metal and comes with a very high price tag.nstallation starts at around $900 for a basic roof, without a tear-off. Standing Seam: Prices start at around $500 for materials and $1,100 for installation, without the old roof tear-off. Copper is a superior quality metal and comes with a very high price tag.