The Best Roofing Contractors in Portland, OR, Compared

It depends on the roof's size, pitch, number of layers to remove, decking condition and the material you choose. In Portland, architectural shingles with moss-resistant granules are the most common replacement, with standing-seam metal as the step-up option. Get at least two itemized written estimates from the contractors on this page; a serious estimate lists the underlayment, flashing, ventilation and decking price per sheet, not just a lump sum.

In most of Multnomah County a full replacement requires a building permit and at least one inspection; small repairs often do not. The contractor should pull the permit in their name. If a roofer asks you to pull it as the homeowner, treat that as a warning sign about their license or insurance.

Portland's older housing stock means a lot of layered roofs and cedar shake conversions. Dry-season crews book out by May. The region's usual problems are nine months of rain, moss, wind storms and clogged gutters under tall trees. Dry-season scheduling (July through September) fills early. Moss treatment and gutter work are annual costs; budget for them rather than for frequent replacements.

Wind and fallen-tree damage are the usual claims. Neglect (moss, debris) is excluded, so keep records of annual cleaning. Document everything with photos before any work starts, and never sign an assignment of benefits or a contract contingent on an insurance approval without reading it.

Ask for the certificate of insurance directly from the insurer, not a copy from the contractor, and confirm it lists both general liability and workers' compensation. Look the license up on the Oregon contractor licensing board site, and check the local address matches what the board has on file.