At Clear Vision Construction, a GAF Master Elite® Contractor, we’re committed to roofing excellence throughout the Northwest. Our certification—held by fewer than 2% of contractors nationwide—allows us to offer the prestigious GAF Golden Pledge® Warranty, which provides 50 years of material coverage and 25 years of workmanship protection.

When it’s time for a roof replacement in Portland, you may have heard that adding new shingles over existing ones can save time and money. While it might seem like a smart shortcut, we strongly recommend a full tear-off for your asphalt shingle roof. Here’s why this approach is the best—and most responsible—choice for your home.

1. Excess Weight and Structural Concerns

Each layer of shingles adds about four pounds per square foot to your roof’s load. Doubling up layers can strain rafters and decking, increasing the risk of sagging or even structural damage, especially in the Portland area, where roofs must also withstand seasonal snow and rain. Most building codes limit shingle roofs to two layers, and some high-risk areas allow only one. A full tear-off ensures your roof stays within safe weight limits and meets local codes.

2. Exposing and Repairing Hidden Damage

Old shingles often conceal issues like wood rot, mold, deteriorated decking, or failing flashing. Without removing the existing layer, these problems remain hidden, potentially leading to costly future repairs. A full tear-off allows us to inspect the deck, replace damaged areas, install leak barriers in valleys and eaves, and build your new roof on a solid foundation.

3. Extending Roof Lifespan

Installing new shingles over an old layer traps heat and prevents proper ventilation, which can cause shingles to become brittle and fail prematurely. Roofs with multiple layers often last only half as long as properly installed single-layer roofs. A full tear-off protects your investment by giving your new roof the best possible lifespan.

4. Preserving Your Warranty

Shingle manufacturers, including GAF, typically void warranties if shingles are layered improperly. As a GAF Master Elite® Contractor, we follow all manufacturer specifications so your roof remains eligible for the Golden Pledge® Warranty. Protect your home and your peace of mind by choosing a tear-off.

5. Improved Appearance and Easier Maintenance

Layered shingles often create a bumpy, uneven surface, especially when upgrading from 3-tab to architectural shingles. This not only detracts from curb appeal but also makes future repairs more complicated—damage can occur in either layer, making leak detection more difficult. A tear-off results in a cleaner, more attractive, and easier-to-maintain roof.

Trusted Advice From the Field

Experienced roofers agree: overlays compromise performance. Field professionals often caution homeowners that layering shortens shingle life, traps heat, voids warranties, and hides structural problems. Their advice is clear—invest in a full tear-off for a stronger, longer-lasting roof.

The Clear Vision Construction Advantage

  • GAF Master Elite® Certified – Authorized to install GAF roofing systems to Golden Pledge® standards.
  • Golden Pledge® Warranty – 50-year material and 25-year workmanship coverage, available only with full-system installations.
  • Locally Owned and Operated – A family-owned company with deep roots in the Portland community.
  • Northwest Expertise – Decades of experience with local weather and structural demands.
  • Comprehensive Tear-Off Process – Includes full deck inspection, leak barrier installation, and before-and-after photos to document our work.
  • No Shortcuts – We always remove the old layer to build your new roof the right way, from the deck up.

Invest Once and Get It Done Right

A full tear-off is more than just a best practice—it’s essential for durability, aesthetics, safety, and warranty protection. At Clear Vision Construction, we make sure your new roof is built properly, performs optimally, and lasts for decades, backed by our GAF Golden Pledge® Warranty.

Ready to replace your roof the right way? Contact us today to schedule your free roofing consultation. We’ll inspect your roof, identify any hidden issues, and explain why a full tear-off is the smart, long-term solution for your home in Portland and the surrounding areas.

Call or fill out a form today to request a free quote!