Use our table below to compare membrane thickness and weight for our range of flat roofing.
Roofing felt weught.
Some roofing felts are actually glued down.
Roofing calculator before laying down the roof pitch the space it will cover otherwise known as the roofing square needs to be measured.
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.
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.
Asphalt saturated heavy duty roofing felt is available in 15 and 30 pound weights.
None asphalt roll roofing.
Installing the roofing felt does take care but can go very quickly.
The weight of roofing constructions above the truss rafter may be estimated with the calculator below.
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.
Please contact us if you have any queries by clicking here.
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.
However that direct correlation to weight no longer exists.
Roofing felt also called roofing felt paper is underlayed on roofs before shingles are added.
Its main purpose is to prevent moisture from leaking into a roof.
The numbers ihad a correlation to the weight not the thickness.
When it comes to estimating the weight of an existing roof field verification of the in place construction is necessary.
30 felt can weigh between 16 and 27 pounds per square.
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.
Atlantic single ply system 17000 system 17000 plus system 5000 classic commodity systems.
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.
Roofing felt is essential to ensure your outbuilding is ready for all weathers by providing a waterproof cover to the building s roof.
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.
