Common residential profile
$7.75/LF white
A clean, lower-profile option for many residential rooflines.
- Custom seamless runs formed on-site
- Often paired with 2×3 downspouts
- Selected after reviewing the roof and runoff paths
★★★★★ 5.0 (160+ Reviews)
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Licensed & Insured, Oregon CCB #110122
Oregon's Seamless Gutter Experts
Seamless Gutter Installation for Portland Metro & Columbia County
American Gutter Service installs custom seamless gutter systems built around the roofline in front of us—not a generic “average house.” We measure the roof, look at pitch and valleys, check the fascia, plan downspout locations, and form the gutter runs for your home.
Choose 5-inch or 6-inch K-style seamless gutters, new downspouts, optional gutter guards, fascia work and roof-edge flashing where needed.
5.0 from 160+ reviewsLicensed, bonded & insuredOregon CCB #11012220+ years serving Oregon
5.0 from 160+ reviewsFeedback from local customers
Licensed, bonded & insuredOregon CCB #110122
20+ years serving OregonExperience with local rooflines
St. Helens basedServing Portland Metro & Columbia County
What Seamless Means
Seamless Gutters Made for the Actual Roofline
A gutter system should do more than make a straight line along the fascia.
Before recommending a size or layout, we look at how much roof feeds each run, where valleys concentrate water, roof pitch, available outlet locations, downspout size, fascia condition and where the water needs to discharge.
Our seamless gutters are formed on-site in long continuous runs instead of being assembled from short sections. That reduces unnecessary joints along straight rooflines and lets us build the system around the measurements of the property.
- Roof area, pitch and valleys inform gutter capacity.
- Outlet and downspout locations are planned before installation.
- The finished system is considered from roof edge to discharge.
The result is a cleaner roof edge and a drainage system planned as a whole—from the roof to the final downspout.
Sizing the System
5-Inch or 6-Inch Seamless Gutters?
Bigger is not automatically better. The right size depends on the roof.
More room for concentrated runoff
$8.75/LF white
A higher-capacity profile useful for larger roof areas, steep pitches, long runs and roof valleys.
- Extra capacity where roof conditions call for it
- Often paired with 3×4 downspouts
- Considered for larger or more complex rooflines
Installation Scope
What Comes With a Professional Gutter Installation
The recommended scope is built around the roofline and the condition of the existing system—not an off-the-shelf package.
Removal & disposalExisting gutters can be removed when replacement is part of the project.
Custom seamless runsLong gutter lengths formed for the measurements of your home.
Components that finish the runOutlets, end caps, mitres and required connections.
Heavy-duty hidden hangersSecure support without visible exterior brackets along the gutter face.
Pitch & sealingProper pitch and professionally sealed joints and connections.
Downspouts & routingDownspout installation planned for the drainage path.
Water-flow checkA final review of flow, connections and discharge.
Cleanup & inspectionWe review the finished work and leave the work area clean.
Clear communicationAny roof-edge conditions found during the work are discussed with you.
If we uncover damaged fascia or another mounting-surface issue, we show you what we found before covering it with a new gutter.
Clear Component Pricing
Gutter Installation Pricing
These are component prices, not an “average house” quote. Your final estimate depends on total footage, gutter size, downspouts, corners, stories, access, removal, fascia condition, flashing and other roofline details.
Get My Written Estimate| Component | Price |
|---|---|
| 5-inch K-style seamless gutter, white | $7.75/LF |
| 6-inch K-style seamless gutter, white | $8.75/LF |
| 2×3 corrugated downspout | $6.50/LF |
| 3×4 corrugated downspout | $7.00/LF |
| Existing gutter removal | $1.00/LF |
| Premium color upgrade | +$300/project |
| Drip edge / flashing when required | $7.00/LF |
| Fascia replacement | $10.00/LF · $250 minimum |
| Fascia painting | $5.00/LF · customer supplies paint |
| Easy Lock gutter protection | $6.00/LF |
| LeafBlaster Pro stainless micro-mesh | $10.00/LF |
| Minimum installation project | $450 |
Pricing is shown in linear feet (LF) where noted. We will review the specific roofline and recommended components in your written estimate.
Project Journal
Real Oregon Gutter Work, Not Stock Photography
A selection of American Gutter Service installations across the communities we serve.
Recent St. Helens Installation
Investigating the roof edge before new metal goes up
That project is a useful example of why we inspect what is behind the old gutter instead of simply covering the problem with new metal.
- 118 LF failed 5-inch gutter removed
- 22 ft rotted fascia replaced
- 118 ft 6-inch seamless gutter installed with hidden hangers
- Three 3×4 downspouts installed
- One funnel installed
Scappoose Seamless Replacement
Full system replacement with roof-edge inspection
A recent Scappoose project involved full gutter and downspout replacement with a black seamless system. The fascia boards and rafter tails were inspected before installation, new downspouts were fitted and the finished gutters were mounted with hidden hangers for a clean roof edge.
Installation Details
The Parts You Do Not See Matter
A gutter run works as part of a drainage system. The points of attachment, flow and discharge are all considered together.
Hidden Hangers
Heavy-duty hidden hangers secure the gutter while keeping the exterior face clean and uncluttered.
Pitch & Outlet Position
Pitch and outlet placement help move collected water toward the downspout instead of letting it sit along the run.
Mitres & Sealing
Where a run changes direction, mitres and other connections are fitted and professionally sealed.
Downspout Routing
Downspout size and routing are planned to carry water away from the roof edge on a clear drainage path.
Complete Drainage Design
2×3 or 3×4 Downspouts?
Downspout sizing is part of the roof and drainage design. The gutter collects water; the downspout needs to move it away. We consider the roof area feeding the run, the gutter size, outlet locations and the intended discharge path before recommending a size.
- 2×3 corrugated downspout
- $6.50/LF
- 3×4 corrugated downspout
- $7.00/LF
Often paired with many standard residential gutter systems.
A higher-capacity option often paired with 6-inch gutters or larger roof areas.
Mounting Surfaces & Roof Edges
A Sound Surface for a New Gutter System
When an existing system comes down, it can reveal conditions that need attention before a new run is mounted.
What if the Fascia Behind the Old Gutter Is Rotten?
Gutters need a sound mounting surface. If we find deteriorated fascia, we show you the condition and explain the recommended repair before the new gutter covers the area.
Fascia replacement$10.00/LF · $250 minimum
Fascia painting: $5.00/LF; customer supplies paint.
Drip Edge and Gutter Flashing
Drip edge or gutter flashing can help guide roof-edge runoff toward the gutter and reduce water moving behind it. We recommend it when the condition calls for it rather than automatically adding it to every estimate.
Flashing when required$7.00/LF
Materials & Finishes
Aluminum, Premium Finishes and Real Copper
Aluminum is the primary seamless gutter material we install for residential projects. It is formed on-site for the required run lengths and is available in standard white and selected premium finishes.
Real copper gutter systems are available by custom estimate. We do not assign a generic price to a material that needs to be planned around the home and project scope.
Standard white, or a selected premium finish
Choose from selected colors when they suit the roof edge and exterior. Final selections can be confirmed with physical samples where appropriate.
Black
Bronze
Brown
Copper Metallic
Premium color upgrade: +$300/project
Copper Metallic is a color finish. It is not real copper.
Optional Gutter Protection
Add Gutter Guards While the New System Is Going Up
We do not recommend guards simply because we are installing gutters. Properties with heavy fir needles, leaves or other roof debris generally benefit more than open properties with little surrounding tree cover.
Easy Lock gutter protection$6.00/LF
LeafBlaster Pro$10.00/LFStainless-steel micro-mesh
We can discuss gutter protection in the context of the roofline and the type of debris the property actually sees.
Explore Gutter Guard InstallationThe Installation Process
From Estimate to Finished Gutters
Each installation follows a straightforward path, with the drainage plan and roof-edge conditions considered before the new gutter system goes up.
- Inspect and Measure
We review the roofline, measurements, drainage concerns, gutter size, colors and available options.
- Plan the System
We map out gutter runs, outlets, downspout placement and any roof-edge work the condition calls for.
- Fabricate and Install
Seamless gutters are formed on-site, then installed with their required components and downspouts.
- Final Check
We review drainage, connections and the work area before the installation is complete.
Many straightforward residential installations can be completed in one working day. Larger rooflines, multiple structures, difficult access or fascia work may require additional time.
Why American Gutter Service
A Gutter-Focused Local Contractor
American Gutter Service is based in St. Helens and serves homeowners throughout Columbia County and Portland Metro. Our work is focused on seamless gutter systems, downspouts, gutter guards and the roof-edge details that support dependable drainage.
5.0 from 160+ reviews
Licensed, bonded & insured
Oregon CCB #110122
20+ years serving Oregon
Workmanship warranty coverage is available under our written terms. Ask us about the coverage that applies to your installation.
Service Area
Gutter Installation Areas We Serve
Based in St. Helens, American Gutter Service installs custom seamless gutters for homeowners across Columbia County and nearby Portland Metro communities.
Common Questions
Seamless Gutter Installation Questions
Have a question about your roofline, gutter size, colors or drainage? Speak with the local team.
Call (503) 308-1174How much does seamless gutter installation cost?
White 5-inch K-style seamless gutters are $7.75/LF and white 6-inch K-style seamless gutters are $8.75/LF. The minimum installation project is $450. Your written estimate accounts for the roofline, footage, downspouts, corners, access, removal and any needed roof-edge work.
Should I get 5-inch or 6-inch gutters?
5-inch is a common residential profile and is often paired with 2×3 downspouts. 6-inch has more room for concentrated runoff and can be useful for larger roof areas, steep pitches, long runs and roof valleys; it is often paired with 3×4 downspouts. The right option depends on the roof.
Are seamless gutters completely seam-free?
Seamless gutters are formed in long continuous runs, which reduces unnecessary joints along straight rooflines. Connections are still needed at corners, outlets, end caps and other required components.
Do you fabricate gutters at the property?
Yes. After measuring the actual roofline, we form K-style seamless gutter runs on-site for the required lengths.
Can you remove my existing gutters?
Yes. Existing gutter removal is available at $1.00/LF when an old system needs to be taken down before replacement. Learn about gutter replacement.
What happens if you find rotten fascia?
We show you what we found and discuss the recommended work before covering the area with a new gutter. Fascia replacement is $10.00/LF with a $250 minimum; fascia painting is $5.00/LF when the customer supplies paint.
Do you install new downspouts too?
Yes. We install 2×3 corrugated downspouts at $6.50/LF and 3×4 corrugated downspouts at $7.00/LF. The size and routing are considered as part of the complete drainage design.
Can gutter guards be installed at the same time?
Yes, when they make sense for the roofline and the debris around the property. Easy Lock gutter protection is $6.00/LF, and LeafBlaster Pro stainless micro-mesh is $10.00/LF. Explore gutter guard installation.
Do you install real copper gutters?
Real copper gutter systems are available by custom estimate. Copper Metallic is a color finish and is not real copper.
How long does installation take?
Many straightforward residential installations can be completed in one working day. Larger rooflines, multiple structures, difficult access or fascia work may require additional time.
American Gutter Service
Ready for a Gutter System Built for Your Roof?
Tell us what is happening with your current gutters—or show us the roofline you need covered.
We will measure the property, review the drainage conditions and give you a clear written estimate for the system the home actually needs.
Licensed, bonded & insured · Oregon CCB #110122