Guides
Plain answers to the questions we hear at the hearth: how often to sweep, what the inspection levels mean, what a sweep should cost, and how Portland rain, moss and wood smoke rules shape a chimney.
Things you can do yourself, from reading a creosote stage to choosing seasoned firewood and keeping a maintenance calendar, and the point where each one should go to a sweep.
Sweep and inspect the chimney between late winter and early summer, do masonry and flashing work in the July and August dry window, cap before the swifts arrive in mid-August, and keep the heating season for burning rather than repairs.
A chimney is a cap, a crown and a lined flue over a smoke chamber, damper and firebox, tied to the roof by flashing.
Inspect the chimney yearly and sweep whenever buildup reaches an eighth of an inch.
Open the Oregon Construction Contractors Board search, enter the company name or CCB number, and read three things: whether the license is active, which endorsement it carries, and whether any complaints or discipline show in the past ten years.
Seasoned firewood is split, stacked off the ground with the top covered and the sides open, and dried until a moisture meter reads under 20 percent, the EPA Burn Wise figure.
Work out why the fireplace smokes, leaks or smells, from flue size and draft to an orphaned chimney after a furnace upgrade.
Creosote builds in three degrees: a dry soot that brushes out, a crunchy or tar-flaked layer that takes stiffer tools, and a shiny glaze that a brush will not touch.
An orphaned chimney is a masonry flue left serving only a gas water heater once a new furnace vents out the side wall.
Portland chimneys leak through five places: a missing cap, a cracked crown, failed flashing, porous brick and open mortar joints, and condensation inside an oversized flue.
What to do during and after a chimney fire, how unreinforced brick behaves in an earthquake, and what the inspection levels actually check.
An unreinforced brick chimney is stacked masonry with nothing tying it to the house, so in a quake it can break at the roofline and fall.
NFPA 211 sets three chimney inspection levels.
In a chimney fire, get everyone out of the house, then call 911 from outside.
What a sweep, an inspection or a vent cleaning runs around Portland, the details that push a quote higher, and how our posted board compares.
For most Portland homes, no: the EPA does not recommend routine air duct cleaning.
A dryer vent needs cleaning when heavy loads take longer to dry, clothes come out hotter than usual, or the hood flap outside barely lifts.
Local company pages we checked in October 2026 put a Portland chimney sweep with a Level 1 look-over at $199 to $499 and a Level 2 camera inspection at $300 to $500; repairs are quoted.
Choosing a liner, a cap, a repair over a rebuild, or a home with an old chimney, weighed for the houses and the weather we actually work in.
A chimney cap is the hood over the flue, and the four types are the single-flue cap, the multi-flue cap, the chase cover on a factory-built chimney and the top-sealing damper.
Four kinds of chimney liner exist: clay tile, stainless steel (flexible or rigid), aluminum for certain gas appliances only, and cast in place.
Repair a chimney when the damage is in one part (crown, cap, a few joints, a cracked tile) and the brick around it is sound.
Inside the inspection period, order a Level 2 camera inspection of the chimney with a written report, check whether any wood stove or insert carries a DEQ or EPA label, and ask whether an old brick flue is lined.
Rain, moss, swifts, DEQ wood stove rules and burn bans: the local weather and rules that shape chimney work in Portland.
A flock of small, dark birds dropping into your chimney at dusk between mid-August and mid-October is almost certainly Vaux's swifts.
Moss on a chimney is a water problem: it holds rain against the mortar and crown, keeps the shaded face wet, and feeds the freeze-thaw cycle that opens joints.
When a home sells in Oregon, any uncertified wood stove or fireplace insert on the property must be removed, destroyed and reported to DEQ.
Multnomah County bans wood burning on red days called for poor air quality in any month, Washington County does the same from November 1 to March 1 in unincorporated areas plus Hillsboro and Cornelius, and the rest of the metro follows DEQ advisories.
Call with what the fireplace is doing, or text a photo of the opening and one of the chimney top, and we will name the service and its posted price before we come out.