The install: this install — 22 squares of Interlock® aluminum standing seam in Black, completed May 5, 2025 in Warren, Oregon, and documented in aerial photography you can see in the gallery.
Warren sits on the lower Columbia between Scappoose and St. Helens, in the river corridor where Columbia County weather does its work: river-channel wind, and the long west-of-Cascades wet season.
Why standing seam here
Standing seam is the profile for owners who want the modern line — long vertical panels, no shingle coursing. On this roof every panel locks mechanically and every fastener is concealed. That matters in a wind corridor for a simple reason: what fails on an exposed-fastener metal roof is the fasteners. Gaskets age, heads back out, and each one is a hole in the roof by design. A concealed-fastener system leaves the weather nothing to work on.
Aluminum on the river
The Columbia corridor is not the open ocean, but it is wet, windy country where coated-steel panels show their weakness at cut edges over the decades. Aluminum cannot rust — the material carries the roof, not the coating. Alunar® 70% PVDF in Black, coating warranted 30 years, structure warranted for as long as the original owner holds the home, transferable once.
The record
This install joins 16 completed Interlock installations on record in neighboring Scappoose since 1998 and a documented photo set across Columbia County — real addresses, real dates, no stock photography. Columbia County’s page lists every community we serve.
Thinking about standing seam? The aluminum roofing page covers profiles and colors, and a written estimate is free.
