★★★★★
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
Multnomah County, OR
Metal Roofing in Multnomah County, Oregon
Multnomah County is where we live and work — our Portland office is here, and the county's communities from St. Johns to Troutdale hold more of our roofs than anywhere else in Oregon. Portland's housing stock is exactly what aluminum interlocking shingles were made for: Craftsman bungalows and foursquares whose composition roofs grow moss on the north slope every winter. Smooth interlocked aluminum gives moss nothing to grip, sheds the valley's rain, and needs no moss wash-and-treat cycle.
★ 4.8 average from 600 Oregon homeowner reviews
Oregon line: (503) 966-2948 · Toll-free 1-866-733-5811
- Roofs in these towns
- 423
- Towns with our roofs
- 6
- In business since
- 1997
Our job book records 423 completed Interlock® roofs in the Multnomah County towns listed on this page, the first in 1998, the most in Portland, Gresham and Troutdale. We serve the county from our Portland office.
THE NUMBERS THIS ROOF HAS TO SURVIVE
Ten-year averages for Multnomah County: about 58 inches of rain and 19 inches of snow a year, a mean temperature near 53°F, gusts recorded to 72 mph, and roughly 36 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.
MOSS IS THE FAILURE MODE HERE, AND IT IS SLOW
58 inches of rain a year keeps a north slope damp from October to May, and that is all moss needs. It roots between asphalt granules, holds water against the mat, and lifts the edge of each tab as it grows. The roof does not fail in a storm — it fails quietly over fifteen years while somebody pays for washing and treatment every few seasons. Smooth interlocked aluminum gives moss nothing to grip.
THE HOUSING STOCK IS THE OTHER HALF
Multnomah County's older neighborhoods are Craftsman bungalows, foursquares and mid-century ranches — steep north slopes, deep eaves, dormers and valleys, and often a second layer of asphalt already up there. Profile matters on those rooflines: shingle, cedar shake and slate pressed in aluminum keep the character the architecture expects, in Alunar-coated colors warranted for 30 years.
FREEZE-THAW — 36 DAYS A YEAR, AND WHY CONCEALED FASTENERS MATTER
Freezing on its own does not damage a roof. Freezing and thawing does, and Multnomah County crosses that line roughly 36 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.
Gallery
Interlock® roofs installed in and around Multnomah County
Real homes, photographed after completion, Multnomah County towns first.
Portland, OR
Deep Charcoal
Portland, OR
Deep Charcoal
Portland, OR
Deep Charcoal
Portland, OR
Deep Charcoal
Portland, OR
Deep Charcoal
Portland, OR
Deep Charcoal
Portland, OR
Deep Charcoal
Portland, OR
Deep Charcoal
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 Multnomah 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 Multnomah County, OR
Alameda, Arbor Lodge, Ardenwald-Johnson Creek, Argay Terrace, Arlington Heights, Arnold Creek, Ashcreek, Beaumont-Wilshire, Boise, Brentwood-Darlington, Bridal Veil, Bridgeton, Bridlemile, Brooklyn, Buckman, Cathedral Park, Centennial, Collins View, Concordia, Corbett, Creston-Kenilworth, Crestwood, Cully, Dunthorpe, East Columbia, Eliot, Fairview, Far Southwest, Forest Park, Foster-Powell, Glenfair, Goose Hollow, Grant Park, Gresham, Hayden Island, Hayhurst, Hazelwood, Hillsdale, Homestead, Humboldt, Irvington, Kenton, Kerns, King, Larch Mountain, Laurelhurst, Lents, Linnton, Lloyd District, Madison South, Maplewood, Markham, Marshall Park, Maywood Park, Mill Park, Montavilla, Mt. Scott-Arleta, Mt. Tabor, Multnomah, North Tabor, Northwest District, Old Town Chinatown, Overlook, Parkrose, Parkrose Heights, Pearl District, Piedmont, Pleasant Valley, Portland, Portsmouth, Powellhurst-Gilbert, Reed, Richmond, Rose City Park, Roseway, Russell, Sabin, Sauvie Island, Sellwood-Moreland, South Burlingame, South Portland, South Tabor, Southwest Hills, St. Johns, Sullivan’s Gulch, Sunderland, Sunnyside, Sylvan-Highlands, Troutdale, University Park, Vernon, West Haven-Sylvan, Wood Village, Woodland Park, Woodlawn, Woodstock
