Metal roofing for Portland homes and outbuildings
Metal roofs shrug off the things that wear Portland roofs down: constant rain, moss, fir needles and wind. We install standing seam and ribbed metal on homes, ADUs, shops and barns across the metro.
A metal roof in Portland is usually standing seam steel with concealed fasteners, installed over solid decking and high-temperature synthetic underlayment, with custom bent trim at eaves, rakes, valleys and walls. It sheds rain and debris quickly and resists moss. Installed standing seam commonly costs $13.85 to $24.60 per square foot, while exposed fastener ribbed panels run $8.45 to $13.70.
More Portland homeowners are choosing metal when the old roof wears out. Smooth steel panels give moss almost nothing to grip, fir needles slide off instead of collecting in the shingle grooves, and a well installed roof keeps working long after several asphalt roofs would have come and gone. Metal is also lighter than most people expect, quiet over solid decking, and a natural base for solar panels later.
The quality of a metal roof comes down to trim and fastening. Standing seam panels are held by hidden clips that let the steel expand and contract as temperatures swing, and the seams are mechanically locked or snapped together. Every edge, valley, chimney and wall junction needs custom bent flashing made to fit. We bend trim from matching coil, so color and finish carry around every detail. Call (503) 917-5484 to talk about metal for your house, shop or barn.
Which type of metal roof fits your project?
Metal roofs come in several profiles and materials, each with its own price and look.
Snap-lock standing seam
Panels snap together over hidden clips without special tools. It works well on residential slopes of moderate pitch and gives a clean modern look with no exposed fasteners on the panel faces.
Mechanically seamed standing seam
Seams are folded with a seaming tool for the tightest weather seal. It suits low-slope sections and homes in high wind areas where extra holding strength makes a real difference.
Exposed fastener ribbed panels
Corrugated or ribbed panels screwed through the face with gasketed screws. It costs less and is common on barns, shops and outbuildings, though screws need checking and retightening over time.
Stone-coated steel
Steel panels coated with granules to look like shingles, tile or shake. It gives metal toughness with a traditional look, which suits neighborhoods where a smooth panel would stand out too much.
Signs metal is the smart choice for your next roof
Metal costs more upfront, so it pays to know when its strengths really fit your house.
Heavy tree cover overhead
If your roof sits under tall firs or bigleaf maples, needles and leaves pile up on shingles and feed moss. Metal sheds debris with each rain and dries faster, which cuts down on cleaning and moss treatment.
You plan to stay long term
A metal roof costs more than asphalt today but can outlast two shingle roofs. If you expect to live in the house many more years, the cost per year of service often works out in its favor.
Low-slope sections on the house
Standing seam handles lower pitches than shingles can, making it a good fit for porch roofs, modern additions and shed dormers where shingles struggle to shed water.
Solar panels are in your plans
Solar mounts can clamp directly onto standing seam ribs without drilling through the roof. That avoids extra penetrations and makes future panel removal for maintenance much simpler.
Exposed to strong winds
Homes on ridges, in the West Hills and out toward the Gorge take hard gusts. Properly clipped standing seam with sealed trim holds up well when wind-driven rain hits from unusual directions.
How a standing seam roof goes on correctly
Measure and plan panel layout
We measure every slope and plan panel lengths so most run from eave to ridge in one piece. Fewer splices mean fewer places for water to sneak in, and the seams line up evenly from the street.
Tear off and prep the deck
Old roofing comes off, decking is repaired, and any humps get flattened, because metal shows every wave. Standing seam needs a smooth, solid substrate to sit flat and quiet in the rain.
High-temp underlayment and metal edges
We install self-adhering high-temperature underlayment rated for metal, plus eave and rake starter trim. Valleys get a wide metal liner over ice and water shield before any panels touch them.
Fasten panels with hidden clips
Clips are screwed to the deck under each seam, allowing the panels to slide slightly as steel expands. Seams are snapped or mechanically locked closed, so no screw holes are exposed to weather.
Bend and fit custom flashing
Trim for ridges, walls, chimneys and penetrations is bent on site from matching coil. Pipe boots designed for metal seal vent stacks, and closures block wind and insects at ridge and eave.
Snow guards, gutters and cleanup
Where sliding snow or ice could hit walkways, we add snow guards. Gutters get heavy hangers to handle sheet runoff. Metal shavings and scraps are cleaned off the roof so they cannot rust stains.
Materials for metal roofing come from manufacturers such as Malarkey, GAF, Owens Corning, CertainTeed, Carlisle and Velux, chosen for the job rather than the logo.
What does a metal roof cost in Portland?
Metal is priced by the square foot of roof. Panel type, gauge, finish and how many cuts and trim pieces the roof needs set the number.
| Work | Typical Portland range |
|---|---|
| Standing seam steel, installed with tear-offper sq ft | $13.85 to $24.60 |
| Exposed fastener ribbed panelsper sq ft | $8.45 to $13.70 |
| Stone-coated steel panelsper sq ft | $12.40 to $19.85 |
| Typical home standing seam reroofper home | $31,420 to $63,740 |
| Snow guards on walkway slopesper roof | $645 to $1,870 |
Steel pricing shifts with panel profile and trim count, so read these as budget guides. Your actual price follows a measured on-roof visit and a written estimate.
What moves the price:
- Panel profile and steel gauge
- Paint finish and color
- Roof complexity and valleys
- Chimney and wall flashing
- Decking repairs before install
- Pitch and safety setup
Why metal performs so well around Portland
Our rain and our trees are the main reasons metal has caught on here. In Forest Park adjacent streets, along the West Hills and in older neighborhoods like Laurelhurst, roofs sit under heavy fir cover that drops needles year round. Shingle roofs in those spots need frequent moss treatment and gutter cleaning. Metal sheds most of that debris on its own, and it dries quickly after each storm, so moss has a hard time getting started.
We also see a lot of metal interest from homeowners in Camas, Happy Valley and the rural edges of Clackamas County, where shops, barns and newer homes with simple roof forms make metal straightforward. The January 2024 ice storm reminded everyone that ice load and falling limbs are real risks. Metal handles the weight well, and while a big limb can dent panels, individual panels can be replaced without disturbing the whole roof.
What makes our metal roofs stay tight
Trim bent to fit your roof
We bend flashing and trim on site so every chimney, wall and valley gets a piece made for it rather than a stock part stretched to fit.
Room for expansion built in
Clip spacing and panel fastening allow the steel to move as temperatures change, avoiding oil canning, popped fasteners and stressed seams over the years.
Clean penetrations for later solar
We plan vents and penetrations so solar mounts can clamp to the seams later without new holes, keeping the roof surface intact for its full life.
Metal Roofing questions from Portland homeowners
Is a metal roof noisy in Portland rain?
Over solid decking with underlayment and attic insulation, a metal roof is about as quiet as a shingle roof inside the living space. Noise mainly comes from metal installed over open framing, like a barn. On homes, the deck and insulation absorb most of the sound of steady Portland rain.
Does a metal roof stop moss growth on Portland homes?
Metal dramatically reduces moss because the smooth painted surface has nowhere for roots to hold and dries quickly. In very shady spots a little growth can appear where debris collects, but a rinse or light cleaning removes it easily, without the granule damage shingles suffer.
Can a metal roof be installed over my existing shingles?
Sometimes, but we usually recommend tear-off. Removing the shingles lets us inspect and repair the decking and gives the metal a flat surface. Overlays can trap moisture and hide rot, which is a real concern in Portland where roofs stay wet for months.
How does a metal roof hold up in Portland ice storms?
Metal handles ice load well, and ice tends to release in sheets once temperatures rise. We add snow guards above walkways, entries and decks so sliding ice does not fall where people walk. Gutters get heavier hangers to handle that load.
Will a metal roof affect solar panel installation later?
It makes it easier. Standing seam allows clamp mounts that attach to the seams without drilling through the roof. That keeps penetrations to a minimum, and if panels ever need to come off for maintenance, the roof underneath stays intact.
Where we do this work most
We cover the whole metro. These are the places we are on roofs most often:
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