Standard Roofing Felt Weight

0 16 0 27 lbs.

Standard roofing felt weight.

For many years roofers used asphalt saturated felt under roofing shingles and it was historically available in two standard weights. Roofing felt s thickness is actually measured in pounds per square with one square equaling 100 feet of roofing material. 15 pound roofing felt. Felt tar and gravel roofing 4 ply 5 3 lb m ft 2 25 9 kg m 2 felt tar and gravel roofing 5 ply 6 1 lb m ft 2 29 8 kg m 2 felt tar and slag roofing 3 ply 4 5 lb m ft 2 22 kg m 2.

This felt will help prevent damage to your roof from wind driven rain and water from other sources. 30 saturated felt underlayment is specified for use as an underlayment between the roof deck and the shingles. 0 34 0 63 kg. Atlas roofing provides a complete selection of roofing felt underlayment.

0 78 1 32 kg. The best weight for roofing felt is the 30 pound product because it provides thicker and stronger footing for roofers that does not tear out especially on steep roofs where footing is critical. The more rigorous standard astm d 226 requires a minimum weight of 11 5 pounds per square. The lowest thickness is 15 pound felt.

Slate roofing 1 4 inch slates. Astm has established two standards for asphalt felt. Felt roof underlayment 30 saturated roof felt. On roofs with a slope of 4 12 or greater use a single layer of 15 lb.

This means that 100 square feet of the felt weighs 15 pounds. Most lumberyards stock only light weight asphalt felt with no astm rating. Slate roofs national slate association 1926. Asphalt saturated material for excellent waterproofing.

15 pounds per hundred square feet and 30 pounds per hundred square feet. 0 07 0 13 lbs. The most commonly used felts are 15 and 30 with weights of 8 and 20 pounds per 100 square feet respectively. Roofing felt underlayment asphalt impregnated 30.

This weight of tar paper may tear and tends to create holes around the roofing nails. Slate roofing 3 16 inch slates. Tar paper comes in two different weights or thicknesses. Asphalt saturated felt starting at the eaves and lapping upper courses over lower by a minimum of 2 inches.

The roof felts are asphalt saturated and are manufactured with a high grade organic mat. 16 27 lbs. The less stringent standard is astm d 4869 which requires type 1 15 felt to weigh at least 8 pounds per 100 square feet. Add an extra layer of protection between your shingles and roof deck with this 30 216 sq.

Heavy duty felt design lays flat and minimizes wrinkling. Us department of energy. Roofing felt underlayment asphalt impregnated 15. 7 13 lbs.