How To Better Understand Your Roof: Uncovering What Underlayment Does

How To Better Understand Your Roof: Uncovering What Underlayment Does

Roofing underlayment is a waterproof or water-resistant barrier material applied directly onto the roof deck. It’s typically installed under all other roofing materials to provide an added layer of protection from extreme weather elements such as wind, rain, and snow.

Why Roofing Underlayment is Important

Most areas of the roof require felt or synthetic underlayment to protect against moisture and other inclement weather. Roofing underlayment provides an extra layer of weather protection shingles alone cannot match. 

With the underlayment in place, your shingles will only serve their primary role – the first line of defense against sun, wind, and rain. Besides, shingles overlap and are not sealed at every corner. Strong winds may lift your shingles, exposing your home to water damage.

Types Of Roofing Underlayment

There are three common types of roofing underlayment. They include:

Asphalt-Saturated Felt

This roofing underlayment was the go-to choice until 15 years ago, when synthetic products were available. Also referred to as “felt paper” or “tar paper,” asphalt-saturated felt is made from varying blends of asphalt, bitumen, cellulose, and polyester. It comes in different thicknesses, so you can choose what will protect your roof longer when exposed to wind, hail, rain, and snow. 

Synthetic Underlayment

Most roofing professionals like this non-bitumen synthetic underlayment today since it’s made with fiberglass, giving it superior tear resistance and stability. It’s also resistant to mold or fungal growth.

Water-Resistant Roofing Underlayment

This type of underlayment provides the protection your roof needs to withstand harsh weather conditions. Even if your shingles blow off during a storm, the underlayment can still withstand some extreme weather. It’s recommended for roofs in areas prone to high winds.

Typically, waterproof roofing underlayment is installed in the following areas:

  • Valleys
  • Eaves
  • Surfaces of low-pitch roofs
  • Protrusions (skylights, chimneys, vent pipes, etc.)

How to Choose the Right Roofing Underlayment 

Depending on your roofing type, one underlayment may work better than the other. For instance, metal roofs do well with synthetic underlayment due to the higher heat resistance. Traditional asphalt shingles, on the other hand, work well with roofing felt underlayment. 

Additionally, consider the climate of your location to determine what will work best. Hotter climates require a material that can withstand extreme heat, such as synthetic underlayment.If you’re planning to replace your roof in Jacksonville, FL, StormForce is the roofing contractor for you. Our roofing specialists will help you evaluate your roofing underlayment options and recommend the best solution. Contact us today to schedule a free, in-home consultation or get a quote!