Felt Paper For Metal Roofing

We specialize in providing painted galvalume and aluminum for the architecturally driven metal panel industry.

Felt paper for metal roofing.

The first goal of roofing underlayment is to keep the roof deck dry before installation of the metal roofing material. When most people think of roofs they typically think of shingles or metal roofing. Traditionally metal roofs have used standard 30 pound felt paper underlayment. But what some may not know is there s another layer of protection directly on top of the roof deck and under the roof covering that performs a critical role in protecting your home from moisture damage.

United roofing gator skin synthetic roof underlayment 42 in x 285 8 ft 1 000 sq ft synthetic roof underlayment. Item 656632 model 0903000. Gaf shingle mate 36 in x 144 ft 400 sq ft felt roof underlayment. The best underlayment for metal roofs.

Felt paper also referred to as tar paper was the standard underlayment material in roofing for decades. The traditional and most common material used for roof underlayment on a steep slope metal roof is non perforated asphalt impregnated felt underlayment. Underlayment must also act as a secondary weather barrier in case the roof fails. It was easy to use durable and even had alignment lines to help with the shingle installation.

Most codes and good roofing practice would require felt. What types of underlayment are available for metal roofing and which is the best choice for your design or installation. 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. There are several types of felt underlayment including both organic reinforced and inorganic reinforced.

With metal roofing its also a good idea to put a layer of red rosin paper between the felt or ice water shield and the metal that way it wont potentialy stick to it and cause oil canning and would allow for expansion.