Cost

Gutter Repair vs. Replacement in Portland: How to Decide

By Portland Gutter Works · September 7, 2026 · 4 min read

Before the ladder is off the truck, the homeowner is usually asking whether the old gutters can be saved or whether it is time for new ones. Fair question. Most of the time you can answer it yourself from the ground, with three checks and one number.

The three-part rule

Material and age. Aluminum lasts 25 to 30 years in Portland; the metal does not rust, so the end usually comes from hangers and sealant rather than the gutter itself. Galvanized steel — which is what most gutters here were before the 1980s — rusts through in 20 to 30 years, and in a climate where it is wet for eight months a year the bottom seam goes first. Copper goes 60 years and more. So: aluminum or copper under 25 years old, default to repair. Galvanized with a brown line along the bottom, start thinking about replacement.

Seamless or sectional. Walk the length of a run and look for a sealed joint every 10 feet. If you find them, it is a sectional system. Those joints were sealed with a product that needed a dry week to cure, which Portland does not offer between October and May, and after 20 years they are all weeping at once. One bad seam on a sectional gutter is a repair. Four is a pattern.

How much is failing. Count the problem spots. One dripping corner plus one run holding water is a repair. Once the list covers most of the house — several runs to re-hang, corners to reseal, a section to replace, outlets to enlarge — the total starts crowding the price of a seamless replacement that brings a warranty and 25 more years with it.

The number

An ordinary Portland repair visit — two corners resealed, one run re-hung, a downspout upsized — lands at $300 to $600. New seamless aluminum on a single-story bungalow is $1,700 to $2,700, and $2,600 to $4,200 on two stories. When the repair list on a 30-year-old sectional system passes $900, you are paying roughly a third of new-gutter money for perhaps three more winters. We write both figures on the estimate so the comparison is right there.

Repairs that are almost always worth it

• Re-pitching a run that holds water. $150–$320. Fixes the overflow, stops the moss, and takes weight off the hangers.
• Enlarging a 2-inch outlet and dropping to a 3x4 downspout. $180–$320. Solves most "it overflows at the corner" calls on 1920s–70s houses.
• Resealing corners and end caps on aluminum. $150–$260 each. Do it on a dry day in late summer, which is why September is a busy month for us.
• Replacing a crushed downspout. $130–$240. Downspout repair Portland-wide is the cheapest fix on the list and the one most often skipped.
• Replacing rotted fascia behind a gutter you are keeping. $10–$24 a foot. The gutter goes back on solid wood.

Repairs that are money down the drain

• Sealing a rust line on galvanized steel. It lasts one season. The metal is gone.
• Adding hangers to a run that is sagging because the fascia is soft. The new hangers pull out too.
• Putting guards on gutters that overflow. You have sealed in the problem and made it harder to see.
• Painting original half-round that has pinholes. Paint is not metal.

The half-round question

On a craftsman or colonial in Irvington, Alameda or Ladd's Addition, replacement has a second decision inside it: K-style or half-round. Aluminum half-round runs $14–$22 a foot against $12–$15 for K-style, and it belongs on those houses. If the originals are galvanized and sound, they can often be re-hung and re-outletted for a fraction of that. The half-round and copper page covers both routes.

A quick self-test

1. Are the gutters aluminum or copper, under 25 years old? Yes → repair.
2. Sealed joints every 10 feet, most of them stained? Yes → lean replace.
3. Brown rust line along the bottom of a steel gutter? Yes → replace.
4. More than a third of the runs need work? Yes → replace.
5. Fascia soft behind more than two spots? Get it looked at — the answer depends on the wood.

What to ask for on the estimate

Both numbers. A gutter repair in Portland should come with a written price for the repair and a note on what a replacement would run, so you can see the gap. If a contractor only offers the expensive option, or refuses to quote a repair on a system that is clearly fixable, that tells you something. The pricing page has the 2026 ranges so you know when a number is out of line.