The numbers ihad a correlation to the weight not the thickness.
Roofing felt weught.
The standard types of felt are 15 and the more waterproof 30.
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.
Roofing calculator before laying down the roof pitch the space it will cover otherwise known as the roofing square needs to be measured.
30 felt can weigh between 16 and 27 pounds per square.
Some roofing felts are actually glued down.
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.
Its main purpose is to prevent moisture from leaking into a roof.
None asphalt roll roofing.
You can return to viewing our roofing products by clicking on the below titles.
Roofing felt is rated based on the weight of a 100 square foot section with 15 and 30 pound felt being the most common.
The weight of roofing constructions above the truss rafter may be estimated with the calculator below.
By shifting the pound symbol 15 felt became 15 felt which may actually weigh 7 5 to 12 5 pounds per square.
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.
These applications are ideal for flat roofs or protective surfaces under roof level decks.
In the past the felt number designation was correlated to the weight of the felt i e a 15 felt weighed 15 pounds 100 square feet.
The best weight for roofing felt is the 30 pound product because it provides thicker and.
Use our table below to compare membrane thickness and weight for our range of flat roofing.
Please contact us if you have any queries by clicking here.
Roofing felt also called roofing felt paper is underlayed on roofs before shingles are added.
Atlantic single ply system 17000 system 17000 plus system 5000 classic commodity systems.
Asphalt saturated heavy duty roofing felt is available in 15 and 30 pound weights.
Roofing felt is essential to ensure your outbuilding is ready for all weathers by providing a waterproof cover to the building s roof.
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.
Installing the roofing felt does take care but can go very quickly.
