For most Des Moines-area homes, seamless gutters are the stronger long-term choice: they only have joints at the corners and downspouts, and Angi puts their life at about 25 years against about 20 for standard aluminum sectional gutters. Sectional gutters cost less up front and can be patched one piece at a time, but every joint is a spot that can leak.
What the difference actually is
Sectional gutters come in pieces that get joined on the house with connectors and sealant, so a long run has a seam every few feet. Seamless gutters are formed from a coil of aluminum or copper into one continuous piece cut to the length of each run. Angi's 2026 guide puts it simply: on seamless gutters you only find joints at the corners and downspouts. On a 40-foot wall, that is the difference between several sealed joints over your front steps and none at all. Both use the same K-style or half-round profiles, so the look from the street is close.
Leaks and upkeep
Joints are where gutters leak. Angi notes that sectional gutters need fresh sealant every few years, while seamless gutters only need it at the corners and downspouts. Each seam is also a small lip where seeds and grit catch, which is why Angi reports that cleaning seamless gutters usually costs 10% to 25% less than cleaning sectional ones. If you have ever watched a drip line form on a sidewalk under a seam, or seen a dark streak on the fascia board below one, you have seen the main weakness of sectional gutters.
What each one costs
Angi's 2026 aluminum cost data puts seamless aluminum at about $9 to $13 per linear foot installed, against about $7 to $10 for seamed aluminum. Angi's seamless gutter guide gives wider spans because it covers every material: $12 to $30 per foot for seamless gutters and $3 to $20 for standard sectional gutters. On a typical house, the gap between the two is often a few hundred dollars, not thousands. Those are national market ranges, not our prices. Your actual price comes from a free estimate where we measure each run.
How long each one lasts
Angi says standard aluminum gutters typically last about 20 years, while seamless gutters hold out to around the 25-year mark. That extra five years comes mostly from having fewer joints to fail and fewer places for water to sit. Thickness and hangers matter as much as seams. A seamless gutter hung on hidden hangers screwed into solid fascia will outlast one hung on spikes in soft wood, no matter how it was formed. When we quote, we tell you what hanger and spacing we plan to use.
The tradeoff: repairs
Seamless gutters have one real downside. Because a run is a single piece, serious damage, like a branch crushing the middle of a run, often means replacing the whole run rather than one section. Angi puts the average cost to replace a damaged seamless run at about $1,150. With sectional gutters you can unbolt and swap one piece, though matching the color and profile of an older system is not always possible. Your actual price for any repair or new run comes from a free estimate. For most homeowners, fewer leaks every year outweigh the rare full-run repair.
Why fewer joints matter in a Central Iowa winter
Des Moines averages 36.5 inches of snow a season under the National Weather Service's 1991 to 2020 normals, and the average first fall freeze in Polk County lands around October 10, per Iowa State Extension. Gutters here spend months full of snow, ice and meltwater that thaws in the afternoon and freezes again overnight. Sealant joints are where that movement and ice show up first. That is reasoning, not a lab result, but it is why we steer most homeowners toward seamless runs with as few joints as the roof allows.
What we install
Flow Right installs 5-inch and 6-inch seamless gutters in the K-style profile, half-round gutters, solid copper gutters and 4-inch round downspouts, in all colors. We hang runs on hidden hangers, seal the end caps and miters, and pitch each run toward its outlet. If your home has a stretch where sectional pieces make sense, such as a short run behind an obstacle, Luke will say so. Read more on our seamless gutter installation page.
Common Questions
Are seamless gutters worth the extra cost over sectional gutters?
For most homes, yes. Angi says seamless gutters only have joints at corners and downspouts, need sealant only there, and last about 25 years against about 20 for standard aluminum. The price gap is often modest: Angi lists about $9 to $13 per foot for seamless aluminum and $7 to $10 for seamed. Your actual price comes from a free estimate.
Where do seamless gutters usually leak?
At the joints that remain: the inside and outside corners, the end caps and the downspout outlets. Those spots are sealed during the install and should be checked when the gutters are cleaned. A leak in the middle of a run usually means physical damage, not a failed seam.
Can a homeowner install seamless gutters themselves?
Angi says a DIY install is possible once you have the gutters in hand, but it takes the right know-how and tools to avoid creating new leaks. Long runs are awkward on a ladder, and the CPSC estimates 273,000 emergency room injuries were tied to ladders and stools in 2024.
What to Do Next
If your sectional gutters drip at every seam, call or text Luke at (515) 901-3646 or send our estimate form. He will measure your runs and show you what a seamless gutter replacement would look like on your house.
See our seamless gutters service or call or text (515) 901-3646.
Sources
- Angi: What Are the Benefits of Seamless Gutters? (2026)
- Angi: How Much Do Aluminum Gutters Cost? (2026 data)
- National Weather Service Des Moines: Des Moines Climate Extremes and Normals (1991-2020)
- Iowa State University Extension: Frost and Freeze Dates in Iowa (1950-2021 data)
- U.S. Consumer Product Safety Commission: Report of Deaths and Injuries (2024)
Cost figures above are published market ranges from these sources, not Flow Right Construction prices. Your price comes from a free estimate.