★★★★★
Great system, and a great team. Victor, Daniel, and Patrick were very professional and thorough during the installation. The roof looks and performs great.
— Jason F., Portland, OR
Columbia County, OR
Metal Roofing in Columbia County, Oregon
Columbia County follows the river from Scappoose and St. Helens up to Rainier and Clatskanie — river towns with real rain, real wind off the Columbia, and a lot of roofs on their second or third asphalt cycle. One of our documented standing-seam installs in Warren is in the gallery: clean vertical panels, concealed fasteners, engineered for exactly this corridor. Installed once, under the Guardian Lifetime Limited Material Warranty.
★ 4.8 average from 600 Oregon homeowner reviews
Oregon line: (503) 966-2948 · Toll-free 1-866-733-5811
- Roofs in these towns
- 45
- Towns with our roofs
- 7
- In business since
- 1997
Our job book records 45 completed Interlock® roofs in the Columbia County towns listed on this page, the first in 1998, the most in Scappoose, Clatskanie and St. Helens. We serve the county from our Portland office.
THE NUMBERS THIS ROOF HAS TO SURVIVE
Ten-year averages for Columbia County: about 59 inches of rain and 20 inches of snow a year, a mean temperature near 53°F, gusts recorded to 64 mph, and roughly 24 freeze-thaw days. The last two decide how long a roof covering lasts here, and they are the two figures almost nobody quotes a homeowner.
RAINFALL — 59 INCHES A YEAR, AND THE MOSS THAT COMES WITH IT
The valley's wet season runs long enough to keep a north slope damp most of the year, and moss roots between asphalt granules, holds water against the mat, and lifts each tab as it grows. That is the failure mode in Columbia County — not a storm, but fifteen quiet years and a wash-and-treat bill every few seasons. Smooth interlocked aluminum gives moss nothing to grip, sheds no granules, and needs no treatment schedule.
FREEZE-THAW — 24 DAYS A YEAR
Freezing on its own does not damage a roof. Freezing and thawing does, and Columbia County crosses that line roughly 24 times a year. Every cycle drives water into a seam, expands it, and reopens it slightly wider. Interlock carries no sealant beads doing the waterproofing and no exposed gaskets to age, so there is nothing for that cycle to work on.
GUSTS TO 64 MPH
Wind damage is a covering problem, not a structural one — which is why it shows up as missing shingles rather than a failed roof. Asphalt depends on an adhesive strip holding a free tab edge down, and once one lifts its neighbors are exposed in turn. Every Interlock panel locks to its neighbors on all four sides with concealed fasteners, so there is no free edge for a gust to get under and no fastener head sitting out in the weather. Wind resistance is warranted to 120 mph installed to manufacturer specification.
Gallery
Interlock® roofs installed in and around Columbia County
Real homes, photographed after completion, Columbia County towns first.
Warren, OR
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Warren, OR
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Warren, OR
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Warren, OR
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Warren, OR
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Warren, OR
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Warren, OR
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St. Helens, OR
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Reviews
What Oregon homeowners say
★★★★★
Worked with Patrick and his team to replace my roof, rain gutters & skylights. Couldn’t be happier with the results. Love the new roof.
— Ben Y., Portland, OR
★★★★★
Awesome! Professional crew from start to finish! Thank you Victor, Daniel, Anna, and Patrick! We love the results and the lifetime warranty!
— Constance J., Portland, OR
★★★★★
Our new Interlock Roof is beautiful. And our neighbors have noticed. The whole process was very professional from beginning to finish. Victor, Daniel and Patrick were incredibly efficient, courteous, knowledgeable, and hard-working. Would recommend highly.
— Connie A., Oregon City, OR
★★★★★
Our new Interlock Roof is beautiful. And our neighbors have noticed. The whole process was very professional from beginning to finish. Victor, Daniel and Patrick were incredibly efficient, courteous, knowledgeable, and hard-working. Would recommend highly.
— Connie A., Oregon City, OR
★★★★★
Crew was amazing, we had one main house roof and two porch roofs that needed to be done fast and before the rain and they handled it well! Our metal roof got finished in two days and they came back out again to clean up on the third day and wrap up everything. We highly recommend them and their service as everything turned out great! Edit: I forgot to mention, we worked with a few different people but I believe it was Patrick and his crew whom helped us
— Erika C., Wilsonville, OR
Before you re-roof in Columbia County, Oregon
Check the contractor's license
Oregon contractors must be licensed by the Construction Contractors Board. Interlock Metal Roofing (PNW) Inc. holds Oregon Construction Contractors Board (CCB) License #130826. Look up any roofer before you sign: Oregon CCB contractor search.
Homes built before 1978
Older homes can have lead paint on trim, fascia and soffits, which roofing work can disturb. We hold the Oregon Lead-Based Paint Renovation (LBPR) Contractor License, LBPR-130826. What lead-safe roofing involves.
The material warranty
The manufacturer's Guardian Lifetime Limited Material Warranty covers the material and finish for the original purchaser while they own the home, transferable once. Workmanship is not part of it.
A written price after your roof consultation
The consultation is free, on Zoom or at your home. We measure the roof, go through profiles and colors with you, and you get a written price. Call (503) 966-2948 or book a time.
Towns we serve in Columbia County, OR
Alston, Apiary, Beaver Falls, Birkenfeld, Chapman, Clatskanie, Columbia City, Deer Island, Goble, Marshland, Mayger, Mist, Pittsburg, Prescott, Quincy, Rainier, Sauvie Island, Scappoose, St. Helens, Vernonia, Warren, Yankton
