How Many Tons Does A Roof Weigh

Metal roof systems in most cases weigh between 1 to 3 pounds per square foot.
How many tons does a roof weigh. Weight of roofing materials. Dumpster size rating potential weight tons 10 yard dumpster. Architectural asphalt shingles weigh 65 80 pounds per bundle. Two feet of snow on a roof with a footprint of say 28 40 feet could weigh 45 000 pounds.
Asphalt shingles 3 tab or strip 1 95 lbs. The weights of other actual products of the same type may vary. Moisture transport through building walls and roofs moisture will flow through a wall or roof if the vapor partial pressure is higher on one of the sides rainfall draining of roof areas and vertical downspouts capacity of vertical downspouts when draining roof areas in rainfall. Pounds per square foot lb ft 2 pounds per square 100 sq.
Three tab asphalt shingles weigh 50 80 pounds per bundle. 90 squares or 9000 sq feet. 60 squares or 6000 sq feet. Recommended dumpster sizes for asphalt roofing shingles.
That s more than 22 tons. And in cases where metal may be installed over an existing roof it may be the only practical answer because other materials may add too much weight load for the existing roof to bear. Slate roof shingles weigh much more sometimes over 300 pounds per bundle. Flat roofs may be especially vulnerable to roof collapse depending on its engineered design load.
45 squares or 4500 sq feet. These are the weights of typical actual products. If you re not sure how many bundles of shingles are on your roof you can also estimate shingle weight by the square. With metal roofing weight on a structure is never an issue.