Steep Roofing Systems: All About the Main Kinds of Underlayment

Installation of RoofsObviously, no construction is complete without a roof. Steep roofing systems are the most popular choice for property owners. Installed at angles more than 14 degrees and have a traditional look, these are easier to maintain and allow room under them which can provide indoor space.

Among the materials needed in steep roofing installation in Tauranga is the underlayment. This is a barrier membrane installed under your roofing material to act as a protective barrier. Here are some types of underlayment the roofing expert you hire might recommend.

Self-Adhered Synthetic Underlayment

This option comprises a polyolefin facer and butyl or bitumen blend which creates a pressure sensitive adhesive. Self-adhered synthetic underlayment provides an adhesive layer for your roof deck and a waterproof seal around your roof’s fasteners.

It primarily enhances a secondary layer of protection for the materials used for primary roofing on the eaves, valleys, skylights and dormers.

Black Asphalt-Saturated Felt

Manufacturers make this underlayment from fibreglass mats combined with asphalt or from impregnated paper.

The primary benefits of black asphalt-saturated felt are its low cost as well as its ability to seal around fasteners and repel water. It is, however, susceptible to tears over time.

Mechanically-Attached Synthetic Underlayment

Synthetic underlayment comprises a coating on both sides of a strong polyolefin membrane, creating a water-resistant product.

Compared with the felt underlayment, mechanically-attached synthetic underlayment is stronger, more durable and lighter. It also comes in long and wide rolls making its installation faster and less labour-intensive.

Regardless of the type of underlayment you choose, the risk of damage from heat and other weather elements is a cause of worry. The only way to mitigate damage to your underlayment from these elements is to get it expertly installed.

Professionally-installed roofing underlayment is exceptionally efficient and will provide a uniform shingle appearance and protect your home during roof repairs.