Are glass fireplace doors required by Ontario code on open wood-burning fireplaces in Ottawa or just recommended?

Glass fireplace doors are not specifically required by the Ontario Building Code for open wood-burning fireplaces, but they are strongly recommended and may be required by your home insurance company. The OBC focuses on structural requirements like hearth extensions, clearances to combustibles, and chimney specifications rather than mandating specific fireplace accessories like glass doors.

However, glass doors provide critical safety and efficiency benefits that make them practically essential for Ottawa homeowners with open masonry fireplaces. In Ottawa's extreme climate, where homes are tightly sealed against -30 degree winter temperatures, glass doors prevent the massive heat loss that occurs when warm indoor air is sucked up the chimney. An open fireplace without doors can actually cool your home by drawing heated air from other rooms up the flue, forcing your furnace to work harder. Glass doors also contain sparks and embers, reducing fire risk, and they allow you to close off the fireplace when not in use to prevent downdrafts from bringing cold outdoor air into your living space.

Many insurance companies now require glass doors on open fireplaces as a condition of coverage, especially for homes built before modern building codes. Check with your insurance provider about their specific requirements. If you burn wood regularly in an open fireplace, quality tempered glass doors ($400 to $1,200 installed) will pay for themselves through reduced heating costs and improved safety.

Important safety note: Never close glass doors completely while a fire is burning unless they are specifically designed for closed-door operation. Most standard glass doors must remain open during fires to prevent overheating and glass breakage. Only close them after the fire has completely burned out and cooled.

If you're considering adding glass doors to an existing fireplace or want to explore converting to a more efficient gas or wood insert, you can browse experienced fireplace contractors through the Ottawa Construction Network directory to discuss options that work best for your specific fireplace and heating needs.