A roof replacement enhances both the aesthetic finish and structural security of a home. Once you've decided to update the feature, you then have to make a variety of decisions, like the choice between water barriers and underlayments. If a new roof installation is in your future, take a minute to learn about the two materials.

What Is the Difference Between Water Barriers & Underlayments? 

Water Barriers

As the name suggests, water barriers are designed to create a secure barricade between the wood decking and precipitation. The material protects against situations that compromise the integrity of shingles, like water backups from ice dams and blocked gutters. As a result, they have become a standard part of modern roof installations.

Technically, water barriers are a type of underlayment because they are installed underneath shingles. However, the material is focused solely around connection points on the roof, like gutters, eaves, chimneys, and vents. When applied on top of normal underlayment, the self-adhesive material creates a water-proof seal. This barrier is effective even after shingle nails penetrate it, preventing all moisture from reaching the base.

Underlayments

While water and ice barriers target the most vulnerable areas, the underlayment protects the roof as a whole by completely covering the decking underneath. Its purpose is to block out any moisture that makes its way under the shingles. The covering comes in two materials: felt and synthetic.

Felt is a type of asphalt-coated paper, which is the most traditional and affordable. However, it's prone to tears if the top roofing layer is damaged or stripped away. Synthetic underlayments are made of a variety of base materials, like fiberglass and polyethylene, which are incredibly sturdy and water resistant.

Deciding Between the Two

Underlayments are an absolute necessity to prevent water damage. While you can utilize them alone, it's best to combine them with water barriers. This arrangement will ensure the most water-tight seal for your new roof installation, thus enhancing its durability and longevity.

If you're ready for a roof replacement, turn to the trusted team at Pinnacle Roofing & Siding to get the job done right. Based in Lincoln, NE, the local business serves residents and businesses across Lancaster County. The roofing contractor is committed to providing honest, safe, and long-lasting work. Request a free quote for your roof installation today online or by calling (402) 560-0232.