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High Point Gutter replaced 324 feet of gutter on a two-story Renton home after a repair assessment found rust running along the bottom of the old troughs. The crew removed and recycled the old system, installed new 5-inch K-style seamless aluminum in light pecan with 13 hand-mitered corners, and reconnected all 10 existing downspouts. They also added 34 feet of counter flashing and a moss treatment on the roof. The install was done in one day on September 10, 2026.
| Location | Renton, WA |
| Service | Full gutter replacement |
| Property | Two-story home with a covered back patio |
| Condition found | Rust along the bottom of the existing gutter troughs |
| New system | 324 linear feet of 5-inch K-style seamless aluminum, .032 gauge, light pecan |
| Corners | 13, hand-mitered on site |
| Downspouts | 10 existing downspouts kept and reconnected |
| Counter flashing | 34 linear feet |
| Old system | 324 feet removed and recycled |
| Also included | Zinc sulfate moss treatment on the roof |
| Project investment | $5,200 to $8,700 |
| Timeline | Assessed August 28, installed September 10, 2026 |
The homeowner’s request
This job started as a gutter repair assessment on August 28. The estimator walked the house and photographed the inside of the gutters from the roof edge. By the end of the visit the quote was for full replacement, not repair. The homeowner signed it the next day.
What High Point found inside the gutters
From the ground, the gutters looked fine. The assessment photos taken from the roof edge tell a different story. Run after run showed rust streaks along the bottom of the trough, and in places a rust-colored layer covered the whole floor of the gutter. The photos do not show what caused the corrosion, and the job records do not name a cause, so this page does not guess at one.
Why replacement instead of repair
Gutter repair works when the problem is local: a leaking corner, a sagging section, a loose downspout. On this house the rust was in the trough itself, and it showed up across the system rather than in one spot. Resealing or re-hanging gutters with that condition would have left the corroded metal in place. So High Point quoted the whole 324 feet as a gutter replacement.
The downspouts were a different call. The quote records that the 10 existing downspouts were in good enough shape to reuse, so the crew reconnected them to the new gutters instead of replacing them. That kept the scope to the part of the system that had the problem.
Materials and how the install was done
The new gutters are 5-inch K-style seamless aluminum, .032 gauge, custom fabricated on site in light pecan. The quote lists High Point’s standard hardware for this system: American-made Raytec hidden hangers, corrosion-resistant fasteners from Tacoma Screw, and preformed downspout outlets rather than hand-cut ones.
This house has a lot of corners. The crew hand-mitered all 13 on site, cutting each one to the roofline and sealing it with flexible silicone, instead of using factory box miters. They also installed 34 feet of counter flashing. Counter flashing tucks behind the existing drip edge and closes the gap between the roof edge and the top of the gutter, so water that runs off the shingles goes into the gutter and not behind it.
The homeowner added a moss treatment after the quote. A September 1 note on the job asks about it, and it was on the final scope. The crew applied a white powdered zinc sulfate monohydrate to the roof. Per the product description, the treatment works as the moss dies and weathers off over the following weeks, and the white residue washes away with rain.
Gutter replacement cost in Renton, WA
This project fell in the $5,200 to $8,700 range. That covered removing and recycling 324 feet of old gutter, 324 feet of new 5-inch K-style, 13 hand-mitered corners, reconnecting 10 existing downspouts, 34 feet of counter flashing, and the moss treatment.
Footage is the biggest driver on a job like this, and 324 feet is a lot of gutter for one house. Corner count matters too, since each hand-mitered corner is its own piece of work. Reusing the downspouts kept the price lower than a job that needs new ones. This range reflects the scope of this completed project and is not a current quote.
What homeowners with similar gutters should know
You usually can’t judge a gutter from the ground. The outside face on this house looked normal, but the trough floors were rusted. If your gutters are older and you have never seen inside them, an assessment from the roof edge is how you find out.
Asking for a repair doesn’t mean you’ll get one, and it shouldn’t. A good assessment should tell you whether the problem is local or runs through the whole system. Here it ran through the system.
Replacing gutters doesn’t always mean replacing downspouts. If yours are in good shape, ask whether they can be reconnected to the new system.
Related questions
How much does gutter replacement cost in Renton, WA?
This Renton project fell in the $5,200 to $8,700 range for 324 feet of new 5-inch K-style gutter with 13 hand-mitered corners, removal of the old system, counter flashing, reuse of 10 existing downspouts, and a moss treatment. A house with less footage, fewer corners, or no add-ons would come in lower.
When should rusted gutters be replaced instead of repaired?
On this project, High Point recommended replacement because the rust was in the trough floors across multiple runs, not in one isolated spot. Repairs like resealing or re-sloping address specific failures. They do not remove corroded metal from the system.
Can existing downspouts be reused with new gutters?
Yes, when they are in good condition. On this home the quote found all 10 existing downspouts sound enough to reuse, and the crew reconnected them to the new gutters.
What are hand-mitered gutter corners?
A hand-mitered corner is cut and fitted on site from the gutter itself, rather than using a pre-made box miter from a warehouse. The crew fabricated all 13 corners on this house that way and sealed them with flexible silicone.
How long did this gutter replacement take?
The assessment was August 28, 2026, and the homeowner signed the quote the next day. Removal, the new gutters, the corners, the downspout hookups, the counter flashing, and the moss treatment were all done in one day on September 10.
About this project
This project documentation was prepared by High Point Gutter from the job records and photos from our crew, September 2026. Technical review by Ben Metsker, Manager, High Point Gutter.
High Point Gutter provides gutter replacement in Renton and across King County. See more projects in Renton, or read about gutter repair if your problem is limited to one area. Not sure whether your gutters need repair or replacement? We can look inside them and tell you which one the evidence supports.