By shifting the pound symbol 15 felt became 15 felt which may actually weigh 7 5 to 12 5 pounds per square.
Roofing felt weught.
When it comes to estimating the weight of an existing roof field verification of the in place construction is necessary.
Its main purpose is to prevent moisture from leaking into a roof.
Roofing felt is comprised of a base made from natural materials such as wood cellulose or synthetic ones such as fiberglass or polyester and then coated or saturated with a protective coating such as bitumen asphalt which repels water but still allows the product to breathe.
The numbers ihad a correlation to the weight not the thickness.
Felt tar and slag roofing 4 ply 4 8 lb m ft 2 23 4 kg m 2 felt tar and slag roofing 5 ply 5 3 lb m ft 2 25 9 kg m 2.
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.
However that direct correlation to weight no longer exists.
Roofing felt also called roofing felt paper is underlayed on roofs before shingles are added.
Asphalt saturated heavy duty roofing felt is available in 15 and 30 pound weights.
The weight of roofing constructions above the truss rafter may be estimated with the calculator below.
You can return to viewing our roofing products by clicking on the below titles.
Roofing calculator before laying down the roof pitch the space it will cover otherwise known as the roofing square needs to be measured.
These applications are ideal for flat roofs or protective surfaces under roof level decks.
Ideal for an apex flat or pent roof shed felt and roofing membrane are durable and perfect for a newly built structure or to re cover existing roofing material.
Use our table below to compare membrane thickness and weight for our range of flat roofing.
None asphalt roll roofing.
The standard types of felt are 15 and the more waterproof 30.
Some roofing felts are actually glued down.
Installing the roofing felt does take care but can go very quickly.
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.
Roofing felt is essential to ensure your outbuilding is ready for all weathers by providing a waterproof cover to the building s roof.
A built up roof for example will typically include the built up membrane itself with or without gravel as well as some kind of insulation and cover board which will vary in thickness from roof to roof.
30 felt can weigh between 16 and 27 pounds per square.
