What Is the Purpose of Roof Sisalation?

Roof insulation paper, also known as roofing felt or underlayment, is a type of material used in roofing applications to provide additional protection and moisture resistance between the roof deck and the final roofing materials, such as shingles or metal panels. It is typically installed beneath the roofing material and directly on top of the roof deck or sheathing.

The purpose of roof insulation paper is to serve as a secondary barrier against water infiltration. It helps to prevent moisture, such as rain or snow, from seeping into the roof deck and causing damage to the underlying structure. Additionally, it acts as a separation layer, protecting the roof deck from the potential corrosive effects of certain roofing materials.

Roof insulation paper is commonly made from asphalt-saturated felt or synthetic materials like fiberglass or polyester. It comes in rolls and is installed in overlapping layers, with each layer providing an additional level of protection. The edges and seams of the paper are often sealed with adhesives or special tapes to ensure a watertight seal.

The benefits of using roof insulation paper include:

• Moisture protection: It acts as a moisture barrier, preventing water from infiltrating the roof deck and causing rot, mold, or other types of damage.