What Is a Roofing Underlayment and Why Is It Important?

Before roofing contractors place the shingles, they need to install the underlayment first. Roofing underlayment is essential in all modern roofs. It helps protect your home from water damage and improve its energy efficiency.

Read on to learn more about the importance of roofing underlayment. 

Roofing Underlayment

The roof underlayment acts as a protective layer between the roofing material and the insulation. It protects both components from moisture, dust and wind. This component is directly installed onto the decking and can be waterproof or water-resistant. Its three main types are asphalt-saturated felt, non-bitumen synthetic, and rubberized asphalt. 

Most roofing materials are only water-resistant and not waterproof. They are designed to be installed on top of a water-resistant or waterproof membrane. A water-resistant underlayment may allow moisture vapor to enter but it can block liquid water. On the other hand, a waterproof underlayment can prevent the passage of water vapor and liquid water.  

Why Is It Important?

During a roof repair, some parts of the affected area are left exposed. When it rains, during the job, water can quickly reach the attic space without an underlayment. Roofing underlayment protects your attic and other roofing components from water damage. 

Also, shingles overlap and not all their corners are sealed. High winds can cause them to lift, making them vulnerable to tear-off or wind-driven rain infiltration. They can also become brittle with age and prematurely age when your attic is poorly ventilated. Roofing underlayment keeps your roof protected during and after installation. 

At CQ Construction & Roofing, you can count on us for a quality roof inspection, replacement, repair, and installation services. Our team also specializes in gutters, siding, chimneys, and ventilation. Call us at  (850) 683-4169 or fill out our contact form to get a free estimate. We work with homeowners in Fort Walton Beach, FL.