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
Wasco County, OR
Wasco County is Oregon's other climate: The Dalles sees a fraction of Portland's rain but nearly 50 freeze-thaw cycles a year, high-desert sun that cooks asphalt, and the east-Gorge wind that funnels past Rowena and Mosier. Aluminum is built for all three — the Alunar coating is warranted 30 years against UV, the metal doesn't care about freeze-thaw, and the interlocked panels lock on all four sides, with wind resistance warranted to 120 mph installed to manufacturer specification. CRRC-rated colors reflect summer heat, too.
★ 4.8 average from 600 Oregon homeowner reviews
Oregon line: (503) 966-2948 · Toll-free 1-866-733-5811
Our job book records 14 completed Interlock® roofs in the Wasco County towns listed on this page, the first in 1999, the most in The Dalles, Mosier and Antelope. We serve the county from our Portland office.
Ten-year averages for Wasco County: about 18 inches of rain and 22 inches of snow a year, a mean temperature near 54°F, gusts recorded to 52 mph, and roughly 48 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.
Wasco County sits in the Cascade rain shadow and takes about 18 inches of rain a year against Tillamook's 81 on the coast. The moss problem that defines roofing west of the mountains is largely not your problem. Anyone selling you a roof here on a moss argument is reading from the valley script.
Freezing on its own does not damage a roof. Freezing and thawing does, and Wasco County crosses that line roughly 48 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. On the dry side that cycle is paired with hard summer sun, so a covering is expanding and contracting through a wider annual range than anything in Portland sees. Interlock panels are engineered to move — the interlock accommodates expansion rather than fighting it, and no part of the waterproofing depends on a sealant that hardens with UV.
Snow load is a structural question answered by your framing, not your roof covering. The Interlock covering adds about 0.7 lb per square foot — less than a second layer of asphalt would.
Gallery
Real homes, photographed after completion, Wasco County towns first.

The Dalles, OR
Deep Charcoal

The Dalles, OR
Deep Charcoal

The Dalles, OR
Deep Charcoal

The Dalles, OR
Deep Charcoal

The Dalles, OR
Deep Charcoal

The Dalles, OR
Deep Charcoal

The Dalles, OR
Deep Charcoal

Turner, OR
Deep Charcoal
Reviews
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
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
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.
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 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.
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.
Antelope, Biggs Junction, Boyd, Celilo, Cherry Heights, Dufur, Friend, Grass Valley, Maupin, Mosier, Pine Hollow, Rowena, Shaniko, The Dalles, Tygh Valley, Wamic
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