Is Felt Paper Required Under Metal Roofing

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.

Is felt paper required under metal roofing.

The roof deck should be sound and level before laying the underlayment. Fifteen pound or heavier felt underlayment is required by code in some areas. However contractors now recognize the benefits of synthetic underlayment for metal roofing particularly when it comes to its tolerance to heat and ultraviolet uv radiation. Most codes and good roofing practice would require felt.

Traditionally metal roofs have used standard 30 pound felt paper underlayment. The traditional and most common material used for roof underlayment on a steep slope metal roof is non perforated asphalt impregnated felt underlayment. Might require a slip sheet a slip sheet is a layer of building paper that is installed beneath the roofing material to further protect the felt underlayment from damage or sticking that can occur when coming into contact with metal panels. The addition of a slip sheet will increase the cost.

Felt paper or not under metal rofing. Roofing underlayment or felt is usually required for the ul fire rating to apply since shingles are usually tested with underlayment.