Chimney services in Mercer Island
- Chimney InspectionA close look at the flue, firebox, masonry and roof flashing, with photos you keep and a plain account of what’s urgent, what can wait and what can be left alone.
- Masonry Repair & TuckpointingRepointing worn mortar joints and replacing spalled brick on chimneys, using new mortar matched to the old so the repair does not harm the brick around it.
- Chimney Crown RepairSealing, resurfacing or recasting the slab on top of your chimney, with a real overhang, a drip edge and a flexible joint around the flue.
- Chimney Leak & Flashing RepairTracing where water really gets in around your chimney, then repairing the flashing, crown, cap or masonry responsible, with a written scope before any work.
- Chimney Sweeping & CleaningCreosote, soot and debris cleared from the flue, smoke chamber and firebox, with before-and-after photos and a plain account of what the cleaning turned up.
- Gas Fireplace Service & RepairService and repair for gas fireplaces and gas inserts: pilot and ignition trouble, sooty glass, odd flames, odors, and the vent or chimney the unit uses.
An older housing stock
Census estimates (American Community Survey, 2024 five-year) put the median Mercer Island home’s construction year at 1973, nearly a decade earlier than Bellevue’s. About 61 percent of homes were built before 1980 and roughly one in five before 1960.
A masonry chimney from the 1950s, 1960s or 1970s has taken many wet winters on its crown and mortar joints, and its original clay flue liner may have cracked from age, settling or a past chimney fire without anything showing inside the room. The same estimates show about 58 percent of occupied homes heating mainly with gas, and some older houses send furnace or water-heater exhaust up a separate flue in the chimney, which makes its condition matter even when the fireplace sits unused. An inspection answers those questions for your house.
Rain, and when to plan exterior work
The nearest long-term NOAA station is Seattle–Tacoma International Airport, about 9 miles to the south-southwest. Its 1991–2020 normals show 39.34 inches of precipitation a year on about 156 days, with roughly three quarters of it falling from October through March. November is normally the wettest month at 6.31 inches; July, at 0.60, is the driest, and June through August together bring only about 3 inches.
That calendar matters for masonry repair, crown work and reflashing, which go more smoothly in dry weather, since fresh mortar and concrete need dry, above-freezing conditions while they cure. An inspection in spring leaves time to plan that work for summer. Chimney4u chooses repair materials and methods for this wet climate rather than working from a generic spec.
Permits on Mercer Island
On Mercer Island, permits come from the City’s Community Planning & Development department, which handles construction permit review and inspection. Single-family mechanical permits can be obtained online at MyBuildingPermit.com.
The City’s guidance starts from a broad rule: a permit is needed to construct, alter or repair a building, or to install, alter, repair, convert or replace a gas or mechanical system, unless the work appears on the exemption list. Chimneys, fireplaces and masonry do not appear on that list. The City says the threshold can be complicated and asks owners to contact Community Planning & Development about their specific situation; its answer is the one that counts.
What you can tell us about
You do not need to know the cause. These are things homeowners describe when they get in touch — each one is something to assess on site, not a diagnosis.
Water where it should not be
Drips in the firebox, stains on a ceiling or wall beside the chimney, or a damp smell after rain.
Leak & flashing repairLoose mortar or damaged brick
Crumbling joints, brick faces flaking off, or bits of masonry on the roof or in the gutter.
Masonry repairA missing or damaged cap
No cap on the flue, a bent or rusted one, or signs that birds or animals have been getting in.
Cap installationSmoke or draft trouble
Smoke rolling into the room, a fire that is hard to keep going, or odors when the fireplace is not in use.
Chimney inspectionBuildup and a sweep that is overdue
You cannot remember the last cleaning, or you have bought a house and do not know the chimney's history.
Chimney sweepingA gas fireplace that will not light
A pilot that will not stay lit, ignition trouble, or soot on the glass. If you smell gas, leave the house and call 911 or your gas utility from outside.
Gas fireplace service
How a visit works
- 1Send the short form or call. Say what you have noticed; photos you took are welcome when we talk.
- 2We arrange a time with you, look at the chimney, and photograph what we find.
- 3You hear plainly what is urgent, what can wait, and what does not need doing.
- 4Repair work comes with a written scope and price. Nothing starts until you approve it.
- 5We photograph the finished work from the same angles, and the photos are yours to keep.
What affects the price
Prices come after the chimney has been seen, in writing. These are the things that move them:
- Condition
- What the inspection finds, and whether the cause of the damage is still active.
- Access
- Roof pitch, height, how many stories up the chimney sits, and whether staging is needed.
- Chimney size
- Height above the roof, width, and how many flues the stack carries.
- Materials
- Brick and mortar matched to what is there, crown and cap materials, liner type.
- Scope
- One targeted repair, several at once, or rebuilding part of the stack.
- Permits
- Whether the work needs a permit from the city or county that has jurisdiction at the address.
Mercer Island chimney questions
Our house dates from the 1960s. Will the chimney need a new liner?
Not necessarily. A clay liner from that era may be intact, cracked in places, or missing sections, and it usually cannot be judged from the firebox. If the inspection finds damage, or you plan to change the appliance the flue serves, relining becomes one of the options discussed alongside repair.
Do King County burn bans apply on Mercer Island?
Yes. Mercer Island is in King County, and the Puget Sound Clean Air Agency issues its bans for the county as a whole. Under Stage 1, a wood-burning fireplace stays unlit, as does any wood stove or insert lacking EPA or Washington emission approval; under Stage 2, all wood-burning devices and pellet stoves stay off. The agency lists gas and propane stoves and inserts as allowed in both stages, and posts current status online and at 800-595-4341.
We burn gas logs in an old masonry fireplace. What should be checked?
Both parts. With vented gas logs, the flue still carries the combustion gases, so its condition and liner matter, and gas fireplace service covers the burner, pilot and controls. If you ever smell gas, leave the house before doing anything else and call 911 or your gas utility from outside.
Do I need a permit to repair my chimney on Mercer Island?
Ask Community Planning & Development before work starts. The City’s permit rule covers repairs to buildings and to gas and mechanical systems, and its exemption list does not mention chimneys or fireplaces, but the City decides each case.
Useful local links
- Building Permits: When Are They Required? — City of Mercer Island Community Planning & Development (opens in a new tab)
- Mechanical Permits — City of Mercer Island Community Planning & Development (opens in a new tab)
- U.S. Climate Normals 1991–2020, Seattle Tacoma Intl Ap (USW00024233) — NOAA National Centers for Environmental Information (opens in a new tab)
- Air Quality Burn Ban Status — Puget Sound Clean Air Agency (opens in a new tab)
- Census profile: Mercer Island, WA — U.S. Census Bureau data via Census Reporter (opens in a new tab)