Roofing felt is rated based on the weight of a 100 square foot section with 15 and 30 pound felt being the most common.
Roofing felt weight.
0 16 0 27 lbs.
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 felt tar and slag roofing 4 ply 4 8 lb m ft 2 23 4 kg m 2.
Some roofing felts are actually glued down.
Us department of energy.
Add an extra layer of protection between your shingles and roof deck with this 30 216 sq.
Use our table below to compare membrane thickness and weight for our range of flat roofing.
Sand screed slate snow softwood soils stainless steel roofing steel stone granite limestone marble sandstone slate suspended.
16 27 lbs.
0 1 0 015 0 05.
7 13 lbs.
Roofing felt s thickness is not a measurement of its depth because it is thin similar to heavy paper.
0 5 0 4 0 3 4 0 5 7 0 77 0 42 0 51 0 3 s.
Felt roof deck protection.
These applications are ideal for flat roofs or protective surfaces under roof level decks.
0 07 0 13 lbs.
Medium weight lightweight clay plain clay pantile concrete slate.
Roofing felt s thickness is actually measured in pounds per square with one square equaling 100 feet of roofing material.
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0 78 1 32 kg.
Roofing felt underlayment asphalt impregnated 30.
This felt will help prevent damage to your roof from wind driven rain and water from other sources.
0 34 0 63 kg.
Heavy duty felt design lays flat and minimizes wrinkling.
Steel framing roofing underlay insulating 3 layer plus chippings.
Asphalt saturated material for excellent waterproofing.
Installing the roofing felt does take care but can go very quickly.
These thick layers of roofing felt are installed by heating the back of the felt with a butane torch and then carefully applying it to the roof.
The most commonly used felts are 15 and 30 with weights of 8 and 20 pounds per 100 square feet respectively.
The 15 pound was for lighter weight projects while the 30 offered more heavy duty protection.
Slate roofing 3 16 inch slates.
Atlantic single ply system 17000 system 17000 plus system 5000 classic commodity systems.
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.
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For many years roofers used asphalt saturated felt under roofing shingles and it was historically available in two standard weights.
