Tamko Gutter Replacement in Seattle, WA

Tamko Gutter Replacement: The Seattle Owner’s Guide

Tamko gutter replacement in Seattle typically runs $280 to $520 for a standard residential section including removal, new Tamko-compatible components, and proper sealing. We stock the common Tamko profiles on our trucks and can usually complete the swap same-day. Most homeowners first notice the problem during our heavy fall rains, when water starts spilling behind the gutter or a section pulls away from the fascia after years of Pacific Northwest freeze-thaw cycles.

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Neil Cavanaugh’s crew has replaced Tamko gutters from Magnolia’s wind-battered capes to the steep pitches of Leschi, and the pattern is consistent: Seattle’s combination of saturated winters and occasional hard freezes tests every seam and hanger. When a Tamko gutter fails here, it usually fails at the miters or the spike-and-ferrule connections, not the material itself.

Which Tamko Models This Applies To

Tamko’s gutter line centers on their 5-inch and 6-inch K-style profiles, with the 5-inch being standard on most Seattle homes built between 1990 and 2015. The critical identifier is the back flange height: Tamko’s OEM hangers require a 1-inch minimum flange to seat properly, and many generic aftermarket brackets bottom out at 3/4 inch, leaving the gutter loose within two seasons. Check the inside face of your gutter for an embossed Tamko logo or a date stamp near the downspout outlet; if the stamp reads “TAMKO” with a lot number, you’ve got the original equipment.

We carry both genuine Tamko replacement sections and a matched aftermarket equivalent from Spectra Metals that meets the same .032-inch aluminum spec. The aftermarket route saves roughly $40 to $60 per section and carries the same 20-year finish warranty, but we only recommend it when the existing Tamko is the standard K-style. Tamko’s older “Heritage” profile, found on some custom homes in View Ridge and Broadmoor, has a proprietary bead roll that generic stock won’t match. For those, we order direct or fabricate a transition piece in our shop.

Signs Your Tamko Gutter Replacement Is Failing

• Water spilling over the front edge during moderate rain. This usually means the gutter has pulled out of level, either from a failed hanger or fascia rot behind the mounting point. In Seattle’s climate, the water follows the path of least resistance and starts washing out your foundation planting.
• Visible gaps between gutter sections or at corner miters. Tamko’s sealant gaskets degrade after 15 to 20 years of UV and moisture exposure. Once the seal breaks, water runs straight into the soffit and can wick up into the roof edge.
• Sagging or waving along a straight run. The spike-and-ferrule method Tamko used on many installations simply loosens in our wet Douglas fir fascia boards. Each sag creates a new low point where debris collects and accelerates corrosion.
• Paint bubbling or rust streaks on the gutter face. Tamko’s finish warranty covers chalking and fading, but not the micro-cracking that lets salt air from Puget Sound attack the aluminum. We see this most on west-facing gutters in neighborhoods like Alki and West Seattle.
• Detached downspout or water pooling at the foundation. The outlet tube seal fails, or the elbow joint separates from thermal expansion. Either way, you’re dumping hundreds of gallons against your basement or crawl space each winter.

Replacement Cost & What’s Included

What drives the range: accessibility (single-story Ballard bungalow vs. three-story Queen Anne Victorian), whether the fascia board needs repair, and if we’re matching existing Tamko color exactly or transitioning to a new shade. Every estimate includes removal and disposal of the old section, new hangers spaced at 24 inches on center (tighter than code, but we don’t trust Seattle’s snow loads any more than we have to), and our 90-Day Done Right Promise on the installation. The price we quote is the price you pay.

DIY or Call Us?

There’s a safe middle ground here. A homeowner can check: are the hangers loose enough to wiggle by hand? Is water flowing from the roof edge into the gutter, or behind it? Is the downspout clogged with fir needles? These checks cost nothing and tell you whether you’re looking at a cleaning or a replacement.

Where DIY goes wrong: working from an extension ladder on wet Seattle soil, trying to seal a miter without pulling the old caulk completely, or forcing a mismatched hanger onto a Tamko flange that needs the exact profile. We’ve been called to fix enough DIY gutter jobs in Crown Hill and Greenwood to know that the second trip costs more than calling first. If your fascia is soft, if the gutter is more than 20 feet off the ground, or if you’re not certain of the Tamko model match, that’s the point to stop and call. We’re at (866) 850-9676, and a live person will answer.

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