Why Is Smoke Coming Out of my Fireplace?

Bay chimney sweep, smoke from fireplace, chimney cleaning

If smoke is coming out of your fireplace instead of going up the chimney it indicates there’s an issue that you need to correct. A smoky fireplace is not only unpleasant it can also be a health and fire hazard in your home. Here we look at some of the causes of smoky fireplaces and what you or a San Francisco Bay chimney sweep can do to alleviate the problem and improve air quality.

Chimney Needs To Be Cleaned

One of the reasons that smoke may not be able to exit through your chimney is because the chimney is blocked with creosote buildup. Without smoke being able to exit your home through the chimney, it instead since spills out of the fireplace and fills your rooms. You should have your chimney inspected and cleaned at least once yearly, and immediately if you notice any change in the performance of your fireplace. If it’s been a while since you’ve had your chimney cleaned, a blockage or build up in your chimney could be the culprit of a smoky fireplace.

Damper Is Closed Or Broken

The damper allows air flow through your fireplace with which is essential to feed the flame and create an airflow through your chimney. If the damper is closed, your fireplace will smoke and the smoke will not pass out through the chimney. Check that your damper is fully open when you’re starting to light the fire. If you still experience problems with a smoky fireplace it might be worthwhile having a professional North Bay chimney sweep look at the top of the chimney to check the rain cap or chimney top damper that might be obstructed.

Flue Is Obstructed

Blockages in the flue can be caused by anything ranging from creosote buildup to a birds nest or dead animal stuck in the flue. Having a professional inspected thoroughly clean the chimney flue can help reestablish airflow and reduce chimney smokiness again.

Chimney Is Too Cold Or It’s Too Warm Outside

When the chimney is too cold, the layer of cold air in the chimney can block the smoke from rising to the top of the chimney and instead pushes smoke out of the fireplace. This problem can be fixed by preheating the chimney by either lighting the end of the newspaper and holding it up to the damper for a little while, or blowing hot air from a hairdryer up the chimney to warm the air and establish airflow.

Negative Air Pressure Inside The House

Negative air pressure inside the house can be caused by airtight insulation or exhaust fans within the house. Negative internal air pressure can prevent the fireplace from drafting correctly which causes smoke to flow inside the house rather than out through the chimney. You can correct negative air pressure by opening a window in the fireplace room while burning.

Wet Firewood

Wet firewood is a common cause of smoky fireplaces. Wet firewood smolders or makes hissing sounds while burning, and can’t create sufficient heat for the chimney to draw well. Ensure you use dry wood to build your fire to prevent an overly smoky and smoldering fireplace.

Faulty Fireplace Design

And incorrect or poorly built fireplace will not be able to draw in air properly and have smoke vent through the chimney correctly either. If you’ve exhausted all other reasons for your overly smoky fire place it could be that your actual fireplace design is faulty. Have a fireplace professional inspect the dimensions and measurements of your fireplace to ensure that it’s actually functional.

A smoky fireplace can contribute to greater fire risk and increased air pollution in your home. Correct a faulty smoky fireplace as quickly as possible by calling an East Bay chimney sweep or fireplace professional to inspect your problem and provide the right solution.

Sorry, the comment form is closed at this time.