What seamless actually means
A sectional gutter comes in 10-foot sticks from a store. You join them together with a slip connector and a bead of sealant, and every one of those joints is a place water will eventually find. On a typical St. Louis ranch that's six or seven joints on one elevation.
Seamless gutter starts as a coil of flat aluminum on a roll-forming machine we bring to your house. The machine feeds the coil through a set of dies and it comes out the other end as finished gutter, cut to the exact length of your fascia. One piece. No joints along the run.
You still get sealed corners, because a corner has to be a corner. But the long straight stretch where water actually sits — that's continuous metal.
What we install
Standard residential is 5-inch K-style in .027 or .032 aluminum. That's noticeably heavier than the .019 builder-grade stuff that shows up on new construction, and it's the difference between a gutter that shrugs off a ladder and one that dents when you lean on it.
Where the roof is steep or the plane is wide, we go to 6-inch. A 6-inch K-style holds close to 40 percent more water than a 5-inch and pairs with a 3x4 downspout instead of the skinny 2x3. On a lot of west county homes that upgrade is the whole fix.
We also run half-round, copper, and steel when the house calls for it. There's a page on each of those if you want the detail.
Hangers, pitch, and the parts nobody sees
We hang everything on hidden hangers screwed into the fascia every two feet. No spikes. Spike-and-ferrule was the standard for decades and it fails the same way every time: the spike works loose, the front lip drops, and the gutter starts holding water instead of moving it.
Pitch is about a quarter inch of fall for every ten feet of run, sloped toward the downspout. Too little and water stands in the trough. Too much and you can see it from the street. Getting that right on a long run is most of the skill in this trade.
Where the fascia is soft, we say so before we hang anything. New gutter screwed into rotted wood is a callback waiting to happen.
How the job runs
Someone comes out and measures — free, and usually within a couple of days. You'll get a written number covering gutter, downspouts, hangers, sealant, haul-off of the old material, and any fascia work we've flagged.
Install on an average home is one day. We pull the old gutter, look at the fascia and drip edge while it's exposed, roll the new runs, hang, seal the corners, set downspouts, and run water through it before we leave.
Cleanup includes a magnet sweep for screws. You shouldn't be finding our hardware in the yard next spring.
Questions people ask
How long does seamless gutter installation take?
Most single-family homes are done in a day. Larger homes with multiple elevations, or jobs that include fascia repair, can run into a second day.
What colors can I get?
Over twenty baked-enamel colors in stock. The finish is applied to the coil at the factory, so it doesn't chalk out the way older painted aluminum did. We'll bring samples to the measure.
Do you replace the fascia if it's rotted?
Yes. We can replace the board and wrap it in aluminum so it doesn't happen again. We'll show you the soft spots before we quote it, not after.
Is seamless worth it over sectional?
On anything longer than about 15 feet, yes. The material costs a little more and the labor is similar, but you're removing every joint that would otherwise be a future leak.
Do you install gutter guards at the same time?
We do, and it's the cheapest time to do it. Guard installed with new gutter costs less than a separate trip later.
Free estimate
We measure, we look at the fascia, and you get a number in writing.
Talk to a real St. Louis gutter company
Third generation, family-run since 1947. Somebody picks up, day or night.