Chimney Flashing Repair Cost in Portland

A chimney leak in Portland almost never starts in the brick you can see from the street. It starts in the layered metal that wraps the base: step flashing up the sides, counterflashing let into the masonry, an apron on the downhill face, and on many bungalows a cricket on the uphill side. Angi lists simple flashing repairs in Portland as low as $190 to $475. A chimney is not a vent jack. Local rebuilds of chimney flashing more often land $550 to $950, and our Oregon flashing range of $300 to $900 for one area, or $800 to $2,500 when several sides or the valley are open, is the band that matches what the layers actually cost to replace.

Caulk is a delay. The rebuild is the product.

Smearing polyurethane around the chimney base is the cheapest line on a bid and the most common repeat leak. Water has to shed over each course of metal and onto the shingles below. A bead sitting on top of failed step flashing is a dam after the first wind-driven rain.

You are buying a rebuild when:

• Counterflashing has pulled out of the mortar
• Step flashing is rusted, short, or not woven into the shingle courses
• The uphill side has no cricket and debris holds water against the brick
• Sealant is the only thing left between masonry and roof

You might still be in a small repair when a single apron piece is loose, the rest of the metal is sound, and the leak traces to that downhill edge only. That is the $300 to $600 visit, not the full wrap.

Masonry is a separate trade. Open crowns, missing caps, and crumbled mortar above the roof line can leak even when the flashing is new. A roofing bid that ignores the crown will look cheap and still drip.

Why Portland chimneys cost more than a video of a dry-climate patch

The base of a Portland chimney stays wet for months. Moss holds moisture against the metal. Freeze-thaw is modest, but thermal movement plus constant damp is enough to open galvanized joints that would last longer in a dry city.

Cost jumps when the crew has to:

• Remove and reinstall a wide band of shingles to weave new step flashing
• Cut a new reglet in the brick for counterflashing
• Rebuild a cricket so water splits around the stack
• Replace rotten decking that sat under a long leak
• Work a steep slope or a chimney in a tight side yard

If the rest of the roof is at the end of its life, paying for a premium flashing wrap into failing shingles is a poor sequence. The inspection should say that before anyone prices copper.

What the visit should produce besides a number

Chimney flashing repair should name which layer failed, whether the cricket exists, and whether masonry needs another contractor. The leak-path method is the same one in roof flashing problems in Oregon: start at the interior stain, work up to the metal, do not stop at the first rusty corner.

For a Portland chimney, call Roof Repairs Pro at (503) 317-8312 with which room shows the stain and whether it appears only in hard rain. That detail is how you tell a counterflashing gap from a crown crack before anyone is on the roof.