Asphalt-saturated felt underlayment, also known as tar paper, is the most traditional and widely used type of underlayment. It is made by saturating a fibrous mat with asphalt, which provides water resistance and durability. This type of underlayment is commonly used in residential roofing applications. If you don’t want to use a self-adhesive layer, you can install two layers of felt or synthetic underlayment to cover the entire deck. Since there’s a long-standing debate on synthetic vs. felt underlayment, the products must meet the quality standards and installation requirements of Floria residential roofing codes. These requirements are in accordance with the ASTM international standards, which are helpful for enhanced protection. PBS Home; ; ;|; ; ;Residential building solutions ; ;|; ; ;Residential roofing attics;; ;|; ; ;Residential roofing
what is underlayment in construction