Roofing felt has been a popular material for flat roofing systems for over a hundred years.
Substitute for roofing felt.
An alternative to cheap felt roofing.
Substituting synthetic roof underlayments for housewrap q.
After stripping the original siding from a 30 year old house i m being asked to re side with 4x8 and 4x9 fiber cement panels designed to look like stucco.
The felt will help protect the plywood from moisture and rot.
The second glass fibre layer fully bonded with hot bitumen and the third layer also fully bonded being a high performance non rip material.
The first glass fibre layer fitted loose this for the purpose of any building movement ensuring the felt does not split.
Roofing felt is highly flammable and can exacerbate the danger in case of a fire.
Pramote polyamate getty images.
These products are much more tear resistant than felt underlayment.
In my expert opinion the three layer felt roofing system is the better option.
It is waterproof and durable as well as cheap but there are a number of downsides to its use.
A variety of different types of manufacturers have developed proprietary polymer blends that make up synthetic underlayment.