Gutters
Sized for the water your roof sheds. Most gutter problems are sizing and pitch, not the gutter itself. Here's what it costs and what matters.
The short version. Seamless aluminum runs $8 to $16 per foot installed, so a typical home at 150 feet lands around $1,400 to $2,600. Guards add roughly $7 to $15 per foot on top. What decides whether gutters work is whether they were sized and pitched correctly, and most undersized gutters were undersized on day one.
Cost
| Work | Typical range | Notes |
|---|---|---|
| Seamless aluminum, 5 inch | $8 to $13 per foot | Standard on most homes here |
| Seamless aluminum, 6 inch | $11 to $16 per foot | For steep or large roofs that shed hard in a downpour |
| Typical home, 150 feet | $1,400 to $2,600 | Includes hangers, end caps and downspouts |
| Gutter guards | $7 to $15 per foot | Big range, because the cheap ones and the good ones are genuinely different |
| Downspout added or rerouted | $150 to $400 each | Often the real fix when one corner keeps overflowing |
Seamless means the run is rolled on site in one length, so the only joins are at corners and outlets. That is where sectional gutters leak first.
The part people miss
A 5 inch gutter on a big steep roof will overflow in heavy rain no matter what it cost. The water has nowhere to go, so it comes over the front edge and lands against the foundation.
Pitch matters just as much. Too flat and water stands and breeds mosquitoes, too steep and it looks wrong and outruns the downspout.
So the first question is never which gutter. It's how much roof is draining into this run, and how many downspouts is it going to take to carry it.

Straight answers
On a house under trees, usually yes. On an open lot, often not.
The honest maths is what you'd pay to have them cleaned twice a year against the one-time cost. Under heavy tree cover that pays back in a few years. On a clear lot it may never.
Almost always too much roof draining into too few downspouts.
Adding or rerouting a downspout fixes it more often than replacing the gutter does, and costs a fraction of the price.
Yes, and it's common.
If the roof is getting replaced soon though, doing them together is cheaper and means the drip edge and gutter apron get integrated properly rather than worked around.
Ice dams are a ventilation and insulation problem, not a gutter problem.
Gutters catch the blame because that's where the ice shows up. Heat escaping into the attic melts snow on the roof, it refreezes at the cold eave, and water backs up under the shingles. Bigger gutters will not fix that.
Free inspection, with the roof area measured so the gutters and downspouts are sized for the water coming off it.