What safety checks should I do myself before lighting my Ottawa fireplace for the first time each fall?

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Ottawa Fireplaces · Accepted Answer

Before lighting your fireplace for the first time each fall, you should perform a thorough visual inspection of the firebox, damper mechanism, and surrounding area to catch any obvious problems before they become safety issues. These checks take 20 to 30 minutes and can prevent carbon monoxide exposure, chimney fires, and house fires.

Fall Pre-Season Fireplace Safety Checks

Inside the firebox, look for debris, dead animals, nesting material, or fallen masonry. Ottawa squirrels and birds are particularly creative about using chimneys as home bases during summer months — it's surprisingly common to find a nest or bird droppings inside. Use a flashlight and look up into the chimney opening to check for obvious obstructions. If you see a significant nest or debris, stop and call a WETT-certified chimney sweep — do not attempt to remove nesting material yourself, as it may contain disease vectors and you could dislodge dangerous objects into the firebox.

Test the damper by opening and closing it smoothly several times. It should move freely without grinding or sticking. If it's stuck, rusty, or won't seal completely, you have a problem. A stuck damper means you cannot properly control draft, which leads to heat loss and potential downdraft issues. If the damper won't close completely, warm air will escape up the chimney all summer long, and cold air can blow back into the room during windstorms. Do not force a stuck damper — call a professional. A damper repair typically costs $200 to $400.

Inspect the hearth and surrounding area for cracks, loose tiles, or missing mortar. The hearth takes years of heat stress, and cracks can widen dramatically over a season if water gets in and freezes during Ottawa's winter. Look at the fireplace surround and mantel for any signs of heat damage, discoloration, or warping — if you see scorch marks on wood, that's a clearance-to-combustibles violation that needs professional attention.

Check the chimney cap from the ground using binoculars if you have them, or examine any photos you took earlier in the year. The cap should be intact, not dented or rusted through, and the spark arrestor mesh should be visible and not clogged with leaves or debris. A damaged cap or clogged spark arrestor can allow rain into the flue, create downdraft problems, or permit embers to escape. A chimney cap typically costs $200 to $600 to replace if damaged.

Look at the fireplace glass (if you have a gas fireplace with a sealed glass front). Check for cracks, discoloration, or buildup. Small cracks in tempered glass can spread rapidly once exposed to heat cycling, and heavy creosote or soot buildup on the inside of the glass indicates incomplete combustion. Clean gas fireplace glass using only manufacturer-recommended glass cleaner — never use household glass cleaner, which can leave residue that degrades the seal. If you see a significant crack or the glass is heavily discolored despite cleaning, that indicates a combustion problem and you should have a TSSA-licensed gas fitter inspect the appliance before use.

For wood fireplaces or stoves, examine the gasket or door seal by closing the door gently and looking for light coming through any gaps. The gasket should feel firm and not compressed or cracked. If you can see light or feel a draft around the door, the gasket needs replacement — a faulty seal allows cold air in and heat to escape, and it makes the stove difficult to control. Replacement gaskets for wood stoves typically cost $30 to $100 and are an easy DIY replacement if you have the right material.

Check for carbon monoxide detectors on every level of your home. You should have at least one detector on each level, and ideally one in every bedroom and one near the fireplace area. Test the batteries by pressing the test button — it should beep. If you don't have CO detectors or yours are more than five years old, replace them now. A functioning carbon monoxide detector can save your life if your fireplace or chimney malfunctions. They cost $30 to $80 each and are non-negotiable safety equipment in any home with a fuel-burning appliance.

Schedule a professional chimney inspection before the heating season. This is the single most important safety step. An annual Level 1 WETT inspection (visual examination of the chimney interior, exterior, and connections) costs $250 to $450 in Ottawa and should happen every year before you regularly use the fireplace. If it's been more than a year since your last inspection, or if you have never had one, book this immediately — WETT inspections typically take 1 to 2 hours. The inspector will identify creosote buildup, chimney damage, improper sizing for your appliance, clearance-to-combustibles violations, and structural problems you cannot see from the ground. This is not optional if you want insurance coverage for a chimney fire or related incident — most insurance companies require annual chimney inspections for homes with wood-burning fireplaces or

Fall Pre-Season Fireplace Safety Checks

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