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Chimney Sweep · Redmond, WA

Booking a chimney cleaning in Redmond starts with which chimney you own

Two houses on the same Redmond street can need very different cleanings. What decides it is not the address but whether the fireplace is masonry with a clay tile flue, or a metal appliance venting through a wood-framed chase.

Below: how to tell which one you have before you call, what changes about the sweeping once you know, and how to check anyone you are about to hire in Washington.

Reviewed by Chimney4u editorial team · Last updated

Work out which chimney you are booking a cleaning for

Redmond built out late, and that shows up in its fireplaces. Whoever you call will ask this first, so it saves a phone call to look before you dial.

Signs you have masonry
Brick or block all the way up, a poured or cast slab on top with the flue tile standing proud of it, and a firebox built of firebrick with visible mortar joints. The flue you are paying to clean is stacked clay tile.
Signs you have a factory-built system
A boxed-in chimney clad in siding or a single skin of brick veneer, topped by a flat sheet-metal cover rather than a masonry slab. Inside, the firebox is a metal box with refractory panels, a glass door, and a manufacturer's label plate — often behind or under the door.

What changes about the cleaning once you know

  • The trigger for cleaning is not the same. A masonry fireplace is swept at about an eighth of an inch of sooty buildup, and sooner where the deposit has glazed. A factory-built fireplace is swept at any appreciable buildup, because the deposit is acidic and shortens the life of the prefabricated parts.
  • The route into the flue is different. A masonry chimney is usually worked from the top, the cleanout or the firebox. A metal system is often reached through the appliance itself, which means partial disassembly and careful reassembly rather than a straight rod run.
  • The brushes have to suit the surface. Stacked clay tile and a stainless inner wall do not take the same tooling. Aggressive brushing in a metal flue is not thoroughness, it is wear.

In Redmond, the flue is often blocked rather than dirty

A cleaning is usually pictured as scrubbing soot off a wall. Under heavy tree cover, a good share of what a sweeping actually removes never came out of a fire.

  • A screen can choke without the flue being dirty. Needle litter mats against a spark screen and restricts the opening. The symptom looks like a draft problem, and the fix is clearing the termination rather than rodding the whole flue.
  • An uncapped flue collects more than debris. Nesting material is a blockage in its own right, and an unused chimney taking on rainwater should get a ventilated cap.

Timing a cleaning around burning season in King County

The chimney has to be cold to be swept, so a cleaning is scheduled around when you burn, not during it. Aim for the visit before the heating season rather than during the first cold snap.

  • Do not burn for at least 24 hours first. The firebox, flue and ash bed need to be cold before anyone can work in them safely.
  • Watch your own smoke. In the Puget Sound region chimney smoke may not exceed 20 percent opacity for six consecutive minutes in any one-hour period. Persistent visible smoke usually means wet wood or too little air, and both of those load a flue faster.
  • Know your last date. Fuel type, roughly how many fires a season, and when it was last cleaned tell whoever you book what to expect on arrival.

Checking a company before you book it

Chimney work is not licensed as its own trade in Washington, so the checks a homeowner can actually make are worth knowing before you compare quotes.

  1. Look up the registration

    The enforceable legal requirement for a chimney company in Washington is contractor registration with Labor and Industries, with the bond and insurance that come with it. Homeowners can look up a contractor's registration and its current status free at L&I.

  2. Know which classification covers this work

    Under Washington rule, chimney cleaning and repair falls within the Masonry specialty contractor classification, so that is what you are looking at on the record.

Local considerations in Redmond

  • Redmond's adopted housing element reports a median structure year of construction of 1989 for all housing units and 1980 for owner-occupied units, with nearly half of all units built in 1990 or later — so a Redmond cleaning is as likely to be a factory-built system as a brick one.
  • A factory-built residential chimney is a listed assembly built to UL 103, and its parts are matched to that listing, so what a cleaning finds in a metal flue leads somewhere different than a cracked clay tile does.
  • The city reports 38.1 percent tree canopy as of 2017 with a goal of 40 percent by 2050, which puts a steady load of conifer debris on caps, spark screens and shaded roofs.
  • Winter air quality burn bans covering Redmond are issued and enforced by the Puget Sound Clean Air Agency, and the stage determines which appliances may still be used.
  • Under Washington rule, chimney cleaning and repair falls within the Masonry specialty contractor classification, and any homeowner can look up a contractor's registration and its status free at Labor and Industries.

What the job includes

  • Confirmation of which chimney family you have before tooling is chosen — masonry with a clay tile flue, or a listed metal system inside a framed chase
  • A written scope and price before the visit becomes work, with nothing starting until you approve it
  • Floor and hearth protection, a sealed fireplace opening, and a vacuum with high-efficiency filtration running for the whole cleaning
  • Mechanical sweeping of the flue with rods and brushes suited to its size, shape and inner surface, plus the smoke chamber, smoke shelf and firebox
  • Clearing of the termination where needle litter, moss or nesting material has packed into a cap or spark screen
  • Removal of everything loosened out of the system rather than off one ledge, including offsets, baffles and the cleanout
  • Photographs before and after from the same angles where practical, with a plain summary of what is urgent, what can wait, and what needs nothing

What it does not include

  • A Level 2 inspection with a camera scan of the flue liner. That is a separate visit with its own written report — book it as a chimney inspection
  • Chase cover, crown, cap or flashing replacement. A cleaning shows you the condition of the top of the chimney; correcting it is separate water work
  • Relining or liner repair, which follows an inspection rather than a cleaning, and which on a metal system depends on the existing chimney's listing
  • Any determination of whether your parcel sits inside the Redmond city limits or in unincorporated King County. Confirm that with the jurisdiction before filing anything
  • Live animal removal. A nest is cleared once the animal is gone, but getting wildlife out of a flue is wildlife control work
  • Appliance and gas work, including damper mechanisms, gas logs, blowers and stove components
  • Dryer vent cleaning, which is a different system entirely

What to look for

Needles, cones or moss visibly packed into the screen at the top of the flue
The termination is restricted. Draft suffers before the flue is anywhere near dirty, and clearing the top is the fix.
Smoke rolling back into the room on a still, damp evening
Something is limiting the flue or the draft — buildup, a nest, fallen debris, or a blocked screen. A sweeping identifies which.
A sharp tar or barbecue smell from the firebox in warm, wet weather
Creosote in the flue is taking up moisture and off-gassing. The deposit itself has to come out; masking it does nothing.
Rust streaks running down the siding of a boxed-in chimney
The sheet-metal cover on top of a framed chase is failing. That is a water finding, not a soot one, and it is the common failure on chimneys of this type.
Scratching or rustling inside the chimney
Something is living in the flue, which usually also means the cap or screen is missing or damaged.
You have never had it opened since you moved in
The inspection interval is annual regardless of how much you burn, because a quiet flue still collects debris and still deteriorates.

What changes the price

We do not publish a headline figure, because it would be a guess about your chimney. These are the things that genuinely move the number, and we put a real one in writing after we have looked.

Masonry flue or factory-built system
Rodding a tile flue and partially disassembling a metal appliance to reach its chimney are different amounts of work, with different tooling and different reassembly.
Buildup versus blockage
Scrubbing a season of soot and clearing a packed spark screen or a nest are separate problems, and a chimney under heavy canopy often turns out to be the second.
The form the deposit has taken
Dry, flaky creosote brushes out. Tar-like or glazed deposits need treatment and extra passes before anything lifts.
Roof access on a wet or mossy roof
Pitch, height, moss and shade decide how much setup happens before the first brush goes in, and sometimes whether the flue is worked from the top at all.
Number of flues in the stack
A chimney carrying a fireplace flue and a furnace flue is two cleanings sharing one setup, not one cleaning.
Whether an inspection is booked alongside it
A Level 1 inspection accompanies routine cleaning. A Level 2, with its camera scan and written report, is its own scope and its own visit length.

Chimney Sweep in Redmond — common questions

My Redmond fireplace is metal rather than brick. Does it still need sweeping?
Yes, and the cleaning trigger is stricter rather than looser. A masonry fireplace is swept at about an eighth of an inch of sooty buildup, while a factory-built fireplace is swept at any appreciable buildup, because the deposit is acidic and shortens the life of the prefabricated components. Systems like these are common in housing of Redmond's age — the city's adopted housing element puts the median structure year of construction at 1989. The chimney is a listed assembly built to UL 103, so anything replaced has to match that listing.
How do I check a chimney company before booking one in Redmond?
Start with Labor and Industries. Contractor registration, with its bond and insurance, is the enforceable legal requirement in Washington, and you can look up a company's registration and its current status free. Chimney cleaning and repair sits within the Masonry specialty contractor classification under state rule, so that is the classification to expect. Bear in mind that Washington does not require a competency test to register, and that industry certification is earned and held by an individual technician rather than by a company — CSIA maintains a public directory of credential holders, and warns that chimney sweeping is largely unregulated.
Can my chimney be swept while a burn ban is in effect?
A burn ban restricts what you may burn, not maintenance on the appliance. The Puget Sound Clean Air Agency issues and enforces those bans in King County, and the stage sets what may still be operated: during a Stage 1 ban only certified stoves and pellet stoves may run, and a Stage 2 ban stops all wood burning. A cleaning actually suits a ban period, because the chimney has to be cold anyway. Check the agency's burn ban status page for the current stage.
There are conifers over my roof. Does that change the cleaning?
It changes what is being removed. Redmond reports 38.1 percent tree canopy as of 2017 and a goal of 40 percent by 2050, and needle litter, cones and moss collect in caps and spark screens rather than in the flue itself. A restricted termination produces the same complaint as a dirty flue — poor draft and smoke in the room — so the top of the chimney gets checked as part of the visit. A chimney no longer in use but still collecting rainwater should have a ventilated cap.
When in the year should I have it done?
Before the heating season rather than during it. The recommendation from EPA and fire officials is to have the appliance, chimney and vent professionally inspected and cleaned every year, and sweeping specifically is driven by buildup rather than by the calendar. Whatever date you pick, do not burn for at least 24 hours beforehand — the firebox, flue and ash bed have to be cold before the work can be done.

Sources

  1. Housing Element – Adoption (Redmond 2050 Comprehensive Plan) — City of Redmond. Accessed 2026-08-27.
  2. Tree Canopy — City of Redmond. Accessed 2026-08-27.
  3. Homeowner Resources - FAQ: What stainless steel liners require insulation? — Chimney Safety Institute of America (CSIA). Accessed 2026-08-27.
  4. Standard Operating Procedure - Level 1 Inspection, Masonry Chimney Attached to a Building Heating Appliance (Rev. 4/5/19) — Chimney Safety Institute of America (CSIA). Accessed 2026-08-27.
  5. About Air Quality Burn Bans — Puget Sound Clean Air Agency. Accessed 2026-08-27.
  6. Verify a Contractor, Tradesperson or Business — Washington State Department of Labor & Industries. Accessed 2026-08-27.
  7. WAC 296-200A-016 - What are the definitions of the specialty contractor classifications for the purpose of contractor registration only? — Washington State Legislature / Office of the Code Reviser. Accessed 2026-08-27.
  8. Installation and Operation Manual - Wood Stoves, Model Striker S160 (P/N 900126-00, Rev. A, 04/2015) — Manufacturer installation manual (Striker S160 EPA-certified wood stove), hosted at woodstoves.net. Accessed 2026-08-27.
  9. Air Quality Burn Ban Status — Puget Sound Clean Air Agency. Accessed 2026-08-27.
  10. WAC 173-433-150 Curtailment — Washington State Legislature. Accessed 2026-08-27.
  11. Register as a Contractor — Washington State Department of Labor & Industries. Accessed 2026-08-27.
  12. What You Should Know About Hiring a Contractor, Remodeler, or Handyman (F625-084-000) — Washington State Department of Labor & Industries. Accessed 2026-08-27.
  13. CSIA Trademark Use Guidelines for the Certified Chimney Sweep / Chimney Safety Institute of America Logo — Chimney Safety Institute of America. Accessed 2026-08-27.
  14. CSIA Self Service Portal - Referrals Directory — Chimney Safety Institute of America. Accessed 2026-08-27.
  15. Why hire a CSIA Professional? — Chimney Safety Institute of America. Accessed 2026-08-27.
  16. RCW 18.27.100 - Registration number - Advertising — Washington State Legislature. Accessed 2026-08-27.
  17. UL 103 - Factory-Built Chimneys for Residential Type and Building Heating Appliances (Standard detail page) — UL Standards & Engagement. Accessed 2026-08-27.
  18. Preservation Briefs 39: Holding the Line - Controlling Unwanted Moisture in Historic Buildings — U.S. National Park Service, Heritage Preservation Services (Sharon C. Park, AIA). Accessed 2026-08-27.
  19. Wood-Burning Installation and Maintenance — U.S. Environmental Protection Agency (EPA), Burn Wise. Accessed 2026-08-27.
  20. DuraVent 1777 Liners - Factory-Built Chimney Relining for Solid Fuel, Installation Instructions — DuraVent. Accessed 2026-08-27.

Next step

Start with an inspection

Tell us what you have noticed. We will look at the chimney, show you what we found, and put a price on the work before anything begins.

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