The first fireplace fire of the season has a way of surfacing problems that stayed hidden all summer. Smoke drifting into the room instead of rising through the chimney usually means something is wrong: a blocked flue, a stuck damper, or damaged masonry. Finding that out mid-fire is a worse time than finding it now.

Preparing your chimney for fall means looking beyond the ash in the firebox. Canadian WETT inspection practices offer a useful framework for separating what a homeowner can check safely from what needs a qualified inspection before regular fireplace use.

Walk Through Before You Light Anything

A ground-level and indoor walkthrough can reveal clear warning signs, but it shouldn’t involve climbing onto the roof or entering concealed spaces. Roof work, flue access, and repairs require proper training and safety equipment.

In Coquitlam, moisture-related wear is worth noting before the wetter months arrive. Check visible areas after a dry day, when staining, cracks, and deteriorating mortar are easier to spot.

Look for these visible conditions:

• Chimney Cap: Check from the ground for a missing, loose, tilted, or visibly damaged cap. A cap keeps rain, leaves, and animals out of the flue.
• Chimney Crown: Look for cracks in the concrete or masonry surface at the top of the chimney. The crown directs water away from the structure.
• Masonry Joints: Watch for crumbling mortar, loose bricks, staining, or sections that appear to be separating.
• Flashing: Inspect the metal where the chimney meets the roof for lifting, gaps, rust, or water marks inside the home nearby.
• Firebox: Check for cracked firebrick, loose panels, excess soot, moisture, or a strong unusual odour.

Nesting material, debris, smoke staining, and signs of water entry aren’t cosmetic issues to set aside. If something looks damaged or out of place, pause fireplace use and arrange an assessment.

Clean & Inspect Before the First Fire

Chimney cleaning and chimney inspection are related but not the same service. Sweeping removes soot and creosote (the combustible residue that wood burning leaves behind) while an inspection evaluates accessible components, venting condition, clearances, and potential defects. Creosote can range from loose, flaky deposits to harder glazed buildup that’s more difficult to remove, and neither a chimney cleaning log nor a quick look into the firebox can confirm that the full venting path is clear or that the flue liner is in sound condition.

WETT, or Wood Energy Technology Transfer, defines inspection levels based on the scope of concern. A Visual inspection covers readily accessible parts of the appliance and venting system without removing any components. A Technical inspection goes further, examining areas a basic visual review doesn’t reach and may involve removing parts or using ladders to access chimneys or attics. An Invasive inspection involves opening walls or chimney components when concealed damage or a significant safety concern needs investigation. The right level depends on what’s found, the system’s history, and the reason for the assessment.

When comparing inspection providers, confirm what the inspection includes and whether cleaning is also needed. Only individual inspectors can be WETT certified, not companies, so you can verify the credentials of the person doing the work before they start.

Check the Fireplace & Safety Devices

Before lighting anything, confirm the fireplace is ready to operate. Open and close the damper (the movable plate that controls airflow through the chimney) to make sure it moves freely and can be fully opened before a fire is lit.

Remove old ash only after it’s completely cold, and keep the hearth area clear of rugs, paper, decorative items, and stored firewood. Check fireplace doors or screens for broken glass, damaged mesh, loose hardware, or poor closure.

Test these safety measures:

• Smoke Alarms: Test each alarm using its test button and replace batteries as the manufacturer requires.
• Carbon Monoxide Alarms: Test alarms and keep them installed according to manufacturer instructions. Carbon monoxide is colourless and odourless and can be produced when fuel doesn’t burn completely.
• Accessible Air Controls: Make sure controls move as intended and aren’t blocked by ash or debris.
• Firebox Components: Stop use if firebrick, panels, or other visible components are cracked, loose, or severely deteriorated.

Smoke spillage into the room, poor draft, heavy visible deposits, cracked components, unusually hot surrounding surfaces, or evidence of a past chimney fire are all reasons to stop using the fireplace. Don’t try to work around those problems by building a larger or hotter fire.

Set Up Your Firewood & First Fire the Right Way

Dry, seasoned firewood supports cleaner combustion than wet wood. Wood that burns poorly tends to produce slower, smokier fires, which contributes to creosote buildup in the flue. Store firewood where it stays dry but away from the home and the fireplace opening, and don’t bring a large supply indoors. It can introduce insects, debris, and an unnecessary combustible load near the fire.

For the first use of the season, start with a controlled fire and watch how the system performs. Smoke should travel up the chimney, not linger in the room. If you notice poor draft, smoke backup, unusual odours, or unexpected heat around the fireplace or chimney, stop and get it looked at before using it again.

Know When a Chimney Inspection Is Worth Booking

An inspection makes sense after a long period of disuse, when buying a home with an existing wood-burning system, after modifications, following suspected chimney fire damage, or when an insurer requests documentation. Visible masonry damage, recurring leaks, smoke entering the room, persistent odours, and a missing or damaged cap also justify a professional review. These conditions often involve areas that aren’t safely visible from the ground or inside the firebox.

Booking a chimney inspection before the cold weather settles in gives you time to address anything found rather than discovering it mid-season. The goal isn’t to assume there’s a problem. It’s to confirm the system is ready or know what needs attention first.

Fall preparation works best when it catches blocked venting, moisture damage, and draft concerns before the first regular fire. For an on-site assessment, contact Duct Ninjas at (778) 401-5281. We offer free on-site inspections, 24/7 availability, and a six-month warranty on all our services.