Roofing & Exterior
For Most Homes, 5-Inch K-Style Is Exactly Right
Five-inch seamless K-style is the standard residential gutter for good reason — it handles the runoff on most PNW roofs, fits the fascia cleanly, and comes in the widest range of colors and materials.
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Signs to watch
Is this you?
Your gutters are sagging, leaking, or seam-split
Old sectional gutters fail at every joint. Seamless 5" K-style removes the mid-run seams that leak and replaces them with one continuous, cleanly pitched run.
You want the standard look most homes wear
The K-style profile with its decorative front face reads as trim and suits most residential architecture. In 5", it's the proportion the majority of Northwest homes are designed around.
You need a specific color to match the house
Five-inch is the most common size, so it comes in the broadest palette of baked-on finishes — the easiest profile to match to your trim, fascia, or roof.
A moderate roof that drains fine when the gutter is right
Most homes with typical roof planes and pitch drain perfectly on a correctly sized and pitched 5" system. When yours overflows, the fix is usually cleaning or pitch — not a bigger gutter.
Your options
The standard size — and when to step up
Five-inch seamless K-style is our default residential gutter: formed on-site in continuous runs with no mid-run seams to fail, hung on hidden hangers, and pitched to drain fully. It comes in aluminum in the widest range of baked-on colors, plus steel where you want more strength, and it fits most fascia proportions cleanly. It's the right call for the majority of homes we serve. The honest limitation: on large or steep roof planes, valley-concentrated runs, or long spans to a single downspout, a 5" system can overflow in a hard PNW cloudburst — and that's where we'd recommend stepping up to 6-inch. We size from your actual roof, not a default, and tell you straight which one you need.
The method
How we do it
- 01
Size the roof to the gutter
We measure roof area, pitch, and where valleys concentrate flow to confirm 5" carries your load — and flag any run that would be better in 6".
- 02
Form and hang seamless
Continuous 5" runs formed on-site, hung on hidden hangers, and pitched to drain fully — most homes done in a day.
- 03
Flow-test the finished system
We run water through the completed gutters and downspouts to confirm they drain before we call the job done.
Straight numbers
Five-inch gutter pricing
Five-inch seamless is the most economical seamless option, and cost tracks linear footage, height, and downspout count. Because it's the standard size, the material and color range is broad and the pricing is predictable. Bundled with a roof replacement, the mobilization savings come off your number — ask for the combined figure. We quote from your actual roof, never a phone guess.
Where we do this work
Five-Inch K-Style Gutters: straight answers
Is 5-inch big enough for my roof?
For most homes with moderate roof planes and pitch, a correctly sized and pitched 5" system handles the runoff — including our wet season. Where it isn't enough is large or steep roofs, valley-concentrated runs, and long spans to one downspout. We size from your actual roof geometry and tell you if yours is a 6" situation.
What does K-style mean, and why is it standard?
K-style refers to the profile — a flat back and bottom with a decorative curved front face that reads like crown molding. It holds more water than the older half-round shape for its size and fits flush to the fascia, which is why it's the most common residential gutter.
What colors and materials can I get?
Because 5" is the standard size, it comes in the widest range of baked-on aluminum finishes to match your trim, fascia, or roof, plus steel where you want extra strength. We'll match the color to the house during the estimate.
When should I choose 6-inch instead?
Step up to 6" when your roof geometry actually calls for it — big or steep planes, valleys funneling several roof sections into one run, or a long span forced to a single downspout. On a moderate roof, 6" is more gutter than you need and reads a bit heavier on the fascia. We'll price both if it's a close call.
Get the five-inch k-style gutters conversation started.
Free 20-minute inspection. Photo report you keep either way. Zero pressure.