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Oregon's Seamless Gutter Specialists
St. Helens-based and locally owned, American Gutter Service installs custom seamless gutter systems built for Pacific Northwest rainfall. Choose aluminum or real copper options, installed by a crew focused on gutters.
Why Seamless
Seamless gutters are formed for the long runs of your home instead of assembled from short pre-cut sections. That means fewer joints along straight rooflines, a cleaner appearance, and gutter lengths made for the actual structure.
We consider roof area, valleys, pitch, gutter size, downspout placement, and where rainwater needs to go before recommending the finished system.
Request a seamless gutter estimate →Made On Site
We start with measurements from the actual roofline. Aluminum coil is formed into K-style gutter on site, then runs are cut to the required lengths and configured with the appropriate corners, outlets, and downspouts.
It is a practical process built around your home—not a collection of generic parts selected from a shelf.
Choose Your Gutter Size
The right size depends on roof area, pitch, valleys, and where runoff concentrates during heavy Oregon rain.
Common Residential Size
A lower-profile option suitable for many typical residential rooflines and commonly paired with 2×3 downspouts.
More Room For Runoff
A larger gutter profile with additional room for concentrated runoff, useful on larger or steeper roof areas and commonly paired with 3×4 downspouts.
Aluminum Gutters
Aluminum gutters are a common residential choice, available in 5-inch and 6-inch K-style systems, formed seamlessly on site, and offered in standard white plus selected premium finishes.
They provide a clean appearance and work with the gutter sizes, downspouts, outlets, and drainage layout recommended for the home.
Real Copper Gutters
American Gutter Service can also discuss real copper gutters where appropriate. Real copper is a distinct material option and requires a custom estimate.
Copper Metallic is an aluminum finish. It is not the same as real copper gutters.
Designated premium colors carry a +$300 project upgrade. Screen colors vary, so final selection should be confirmed with physical samples where appropriate.
Installation Details
A good gutter installation is more than the visible run along the roof edge. We pay attention to secure attachment, hidden hangers, properly positioned outlets, sealed mitres, appropriate pitch, and clean downspout routing.
Those details help the system collect water along the roofline and direct it into the drainage path planned for your home.
Complete Drainage System
Downspouts are planned with the gutter system so water has a clear route from the roof edge to the ground. Size and placement depend on the roofline, gutter size, and drainage needs.
Explore Downspout Installation →Replacing Existing Gutters?
If existing gutters are being removed and replaced, that is a gutter replacement project. Existing gutter removal is charged at $1/LF.
See Gutter Replacement →A Solid Mounting Surface
Gutters need a sound mounting surface. If inspection reveals deteriorated fascia, work may be recommended before the new system is mounted. Not every project needs it.
Roof Edge Details
Drip edge or gutter flashing can help guide roof-edge runoff toward the gutter and reduce water traveling behind it. It is recommended only when conditions warrant it.
Optional Gutter Protection
Gutter protection can be added during installation when it is a good fit for the roofline and the debris your property sees.
Your Estimate
Final pricing reflects the system your home needs, without relying on generic average-house figures.
Transparent Starting Prices
| Item | Price |
|---|---|
| 5K White Seamless Gutters | $7.75/LF |
| 6K White Seamless Gutters | $8.75/LF |
| 2×3 Corrugated Downspouts | $6.50/LF |
| 3×4 Corrugated Downspouts | $7.00/LF |
| Existing Gutter Removal | $1/LF |
| Premium Colors | +$300/job |
| Drip Edge / Flashing | $7/LF when required |
| Fascia Replacement | $10/LF · $250 minimum |
| Fascia Painting | $5/LF, customer supplies paint |
| Minimum Installation Charge | $450 |
The Process
Review the roofline, measurements, drainage concerns, gutter size, colors, and options.
Confirm materials, remove existing gutters if applicable, and evaluate mounting surfaces.
Form seamless gutter runs on site and install gutters, outlets, and downspouts.
Review the finished system, drainage, connections, and clean the work area.
Real Work. Real Homes.
Examples of American Gutter Service work completed on Oregon homes.
Why AGS
American Gutter Service is a gutter-focused local contractor based in St. Helens. Our work is centered on seamless gutter systems, downspouts, gutter guards, and the roof-edge details that support dependable drainage.
Homeowners work with a locally based crew experienced with Oregon rooflines, Pacific Northwest rainfall, real project conditions, and clear written estimates.
Service Area
Based in St. Helens, American Gutter Service installs custom seamless gutters for homeowners throughout Columbia County and nearby Portland Metro communities.
Common Questions
Have a question about your roofline, gutter size, colors, or drainage? Give our local team a call.
Call (503) 308-1174White 5-inch gutters start at $7.75/LF and white 6-inch gutters start at $8.75/LF. The minimum installation charge is $450. Final cost depends on the roofline, footage, downspouts, corners, colors, and any needed roof-edge work.
Five-inch gutters suit many typical rooflines. Six-inch gutters are a higher-capacity option that can be useful on larger or steeper roof areas.
Bigger is not automatically better. Proper sizing depends on the roofline, roof area, pitch, valleys, and runoff patterns.
Yes. We measure the property and form seamless K-style gutter runs on site for the required lengths.
Yes. Existing gutter removal is available at $1/LF when an old system needs to be removed before replacement. See Gutter Replacement →
White is standard. Designated premium colors such as black, bronze, brown, and Copper Metallic carry a +$300 project upgrade. Physical samples are recommended because screen colors can vary.
No. Copper Metallic is an aluminum finish, not a real copper gutter system.
We can discuss real copper gutter options where appropriate. Real copper systems require a custom estimate.
Gutters need a sound mounting surface. If inspection reveals deteriorated fascia, replacement may be recommended before the new system is mounted. Fascia replacement is $10/LF with a $250 minimum.
Drip edge or flashing is recommended only when roof-edge conditions warrant it. When required, the price is $7/LF.
Yes. Gutter guards can be added during a new installation when they are appropriate for the roofline and the debris around the property. Explore Gutter Guard Installation →
We install 2×3 corrugated downspouts at $6.50/LF and 3×4 corrugated downspouts at $7.00/LF. The 3×4 size is often paired with 6-inch gutters or larger roof areas.
Oregon CCB #110122
American Gutter Service installs custom seamless gutter systems throughout Columbia County and the Portland Metro.
