When it comes to protecting your home, choosing the right roofing materials — including gutter protection — is critical. Many homeowners don’t realize that installing the wrong type of gutter guard can actually void your shingle wind perimeter warranty and cause expensive roof damage.

Here’s what you need to know to avoid costly mistakes and protect your investment.

How Gutter Guards Impact Your Roof Warranty

Not all gutter guards are designed with your roof’s integrity in mind. Some types of metal gutter guards are installed by sliding under the first course of shingles. This interferes with a crucial part of your roof system: the protractor strip.

The protractor strip is an adhesive on the first row of shingles that faces upward, designed to bond with the downward-facing adhesive on the second row during installation. This solar-activated process, known as flashing off, ensures a strong, weather-resistant seal along the perimeter of your roof.

When a gutter guard sits between these adhesive layers, they can’t properly bond. As a result:

  • The roof perimeter doesn’t flash off correctly
  • Your shingles remain vulnerable to wind damage
  • Your roof warranty can be voided

Additionally, the use of different materials — like metal guards and asphalt shingles — causes expansion and contraction at different rates. Over time, this movement creates cracks, separation, and early deterioration, as you can see in the example photo.

What Duane Mainardi Builders Recommends

At Duane Mainardi Builders, we prioritize protecting your roof the right way.

When we install a new roof, we:

  • Remove faulty gutter guards free of charge
  • Inspect the roof perimeter for any existing damage
  • Offer alternative gutter protection options that sit flat inside the gutter and don’t interfere with your shingles — providing full protection against leaves, pine needles, and debris.

Choosing the right gutter guard system helps you protect your roof, extend its lifespan, and keep your warranty intact.

Need a Roof Inspection or Gutter Guard Advice?

If you’re unsure about your current gutter system or you’re planning a roof replacement, contact Duane Mainardi Builders today. Our experienced South Jersey roofing team is here to help you make the best decisions for your home.

Call 609-923-4548 for a free inspection or quote!