Gmc Tar Paper Roof Underlayment

To answer this question we first need to understand what options exist for roofing underlayment and the value they provide.

Gmc tar paper roof underlayment.

Family owned manufacturing company that produces self adhered roof underlayments self adhered modified bitumen sbs base and cap sheets and felts. Roofing felt is a layer of tar paper installed beneath the shingles to provide a backup waterproof membrane in case of leakage. 4 square standard 15 astm d 4869 type i covers 432 sq ft. That is why we like it to call the best roof underlayment 2020.

Item 169827 model 5003002. Felt paper also referred to as tar paper was the standard underlayment material in roofing for decades. Gmc roofing felt is an industry leading superior quality authentic asphalt saturated organic felt underlayment. All gmc products meet various astm standards.

Felt is time tested and approved as a viable option with most residential roofing systems but does this necessarily mean that felt is the best option in every case. Grace ice water shield 36 in x 75 ft 200 sq ft rubber roof underlayment. The debate is about moisture protection felt or tar paper asphalt impregnated coarse fiber paper is quite impervious to moisture for a short term exposure during a rainstorm say though it does soak up moisture if kept wet for more than a few hours as occurs during ice damming does tend to bunch and creep and wrinkle when wet and does. The underlayment can make it through the summer heat winter snow and spring rain on a low slope roof without anything covering it.

Synthetic underlayment started gaining popularity in the last decade. Felt otherwise known as underpayment is required when. All gmc products meet various astm standards. It was easy to use durable and even had alignment lines to help with the shingle installation.

And this synthetic roof underlayment becomes famous due to its quality easy installation process and affordability. Traditional asphalt felt underlayments tear easily and absorb moisture leading to wrinkling that telegraphs through the shingles. For decades roofers in atlanta have been installing felt paper as an underlayment when replacing roofs.