Metal Roofing in Cedar Hills, Oregon — Lifetime Interlock® Aluminum Shingles Installed Locally

No — Interlock roofing is made from roofing-grade 3105-H24 aluminum alloy that contains no iron, so rust is physically impossible. Aluminum forms a self-healing oxide layer that protects itself even when scratched. Cedar Hills gets about 1208 mm of rain yearly and sees roughly 37 freeze-thaw days per year, conditions that would corrode steel instantly. The Alunar 70% PVDF fluorocarbon finish on both panel sides adds another 30-year warranted layer of defense, especially valuable in wet Pacific Northwest air.

Interlock panels carry the highest impact rating available — UL 2218 Class 4 — and the Guardian Warranty covers perforation from hailstones up to 1.5 inches. Most insurers recognize this rating and many offer discounts on metal roofs; check with your agent. While Cedar Hills averages 29 cm of snow annually rather than heavy hail, the Class 4 rating protects you against the occasional severe storm and gives adjusters confidence the roof won't fail.

Interlock's four-way interlocking aluminum panels are warranted to resist wind speeds up to 120 mph when installed to spec — well above the gusts Cedar Hills typically sees around 120 km/h. The locking system distributes lateral force across panels so no single fastener bears the full load. Over 26+ years of installations from coastal BC to Antarctica, the design has proven itself in salt air and extreme cold; Cedar Hills' 3033 annual sunshine hours and moderate 11.2°C mean temperature are far gentler conditions than most of Interlock's service areas handle.

No structural reinforcement is needed. The Interlock Tile profile, for example, installs at just 0.59 lb per square foot — about 96% lighter than concrete or clay tile — so it can go directly over your existing roof in most cases. The Slate and Cedar Shingle profiles are even lighter. This matters in Cedar Hills because your home's framing was designed for asphalt shingles; switching to Interlock actually reduces load, and installation can often happen without tearing off the old roof, cutting labor costs and timeline.

Yes, over the roof's full life. Asphalt needs replacement every 15–25 years and contributes to landfill waste; Interlock carries a non-prorated lifetime limited warranty for the original owner and a one-time transferable 50-year warranty for the next owner. That means one roof covers you and your successor for decades. Current promotion: no payments and no interest until Spring 2027, or take 10% off installation. Cedar Hills' 1208 mm annual rainfall and 37 freeze-thaw cycles stress asphalt far more than they stress aluminum, shortening asphalt life and increasing lifetime cost.

The Guardian Warranty is a non-prorated lifetime limited warranty for the original owner, covering rusting, rotting, splitting, cracking, curling, and loss of impact resistance — basically the failure modes that plague traditional roofing. It's one-time transferable, giving the next owner 50 years from completion. The Alunar coating is separately warranted for 30 years against chalking and fading (ASTM D4214/D2244). For a Cedar Hills home where rainfall and freeze-thaw cycles are steady threats, that coverage is genuine peace of mind.

No. The four-way interlocking design means water sheds across and down the panels; seams are overlapped, not butt-joined. Installed over solid deck with underlayment — standard practice by Interlock Metal Roofing (PNW) Inc., serving this region since 1997 — the system is as leak-proof as asphalt and far more durable. Cedar Hills averages 1208 mm of rain annually with gusts to 120 km/h; wind-driven rain tests the system, but the locked panels handle it. Proper installation protocol matters more than material type here.

Yes. energy-efficient colors in Interlock's range feature thermal emissivity of 0.84 and initial solar reflectance up to 0.55, which means they reflect heat that asphalt absorbs and re-radiates into your home. Cool Roof Rating Council rated. Cedar Hills' 3033 annual sunshine hours and mean temperature of 11.2°C mean summer cooling isn't your biggest load, but every degree of reflection counts during the occasional warm spells and reduces attic temperature year-round — lowering HVAC runtime and utility bills.

Virtually none. Aluminum doesn't rust, split, curl, or rot; the self-healing oxide layer and 30-year-warranted Alunar coating eliminate weathering and fading. Unlike asphalt (which degrades under UV and temperature swings), wood shakes (which crack and mold in wet climates), or clay tiles (which leak and break), Interlock panels shed debris and water with zero upkeep. Cedar Hills' 1208 mm annual rainfall actually works in your favor — regular rain naturally cleans the surface. No algae treatment, no patching, no sealant recoating.

Interlock Metal Roofing (PNW) Inc. serves Cedar Hills and the wider Washington County region. They've been installing Interlock since 1997 — before the product earned its ICC-ES ESR-1790 evaluation, before published solar-reflectance listing , before current installations in Antarctica. That tenure means they know local building code, Cedar Hills' 37 annual freeze-thaw cycles, and how to install over existing roofs properly. They can walk you through the current promotion: zero payments and zero interest until Spring 2027, or 10% off the full installation.

Yes. Cedar Hills averages about 29 cm of snow, 1208 mm of rain, roughly 37 freeze–thaw days a year, with peak wind gusts near 120 km/h. Interlock® aluminum roofing is wind-rated to 193+ km/h (120 mph), UL 2218 Class 4 impact-rated and Class A fire-rated, and its four-way interlocking panels shed snow and resist ice dams and freeze–thaw cracking — all backed by a lifetime limited, transferable warranty.