In the fireplace industry, the term “airtight” in regards to fireplace doors is a misnomer, because there is no such thing as a truly airtight glass fireplace door. You may have heard, for instance, that air tight glass fireplace doors have the ability to trap air inside the firebox, but this is also untrue.
How do I make my fireplace door airtight?
Since airtight fireplace doors are not truly airtight you can go out of your way to make it more airtight. To do this you will be sealing it from the inside. Use silicone caulk that is rated for high-temperatures. Apply a line of caulk around the frame on the inside.
How do you seal gaps around a fireplace door?
Use can use polyurethane foam for foam insulation for your fireplace door. This is the most widely used form of insulation in the market and a preferred choice for fireplaces. This foam insulation is very good in sealing little or large gaps that exist in a chimney door.
Is it better to keep fireplace doors open or closed?
The doors should always be fully open or fully closed. … The glass doors should be closed as the fire dies down to minimize the amount of room air going up the fireplace chimney. When burning gas logs in a wood-burning fireplace, the glass doors should always be fully open when the gas logs are burning.
Are fireplace doors worth it?
With this in mind, it’s always a good idea to equip your fireplace with glass fireplace doors to better contain fires and to add a stylish finish to the focal point of your living space. These kinds of doors are better than screens because they help regulate heat, contain smoke and prevent rogue sparks.
Can I use expanding foam around a fireplace?
To keep a fireplace working properly, never use spray foam on the inside of the fireplace or the chimney, or on the damper. On the exterior surfaces of the fireplace and chimney, spray foam is fine because these surfaces won’t get hot enough to melt it or to cause any damage.
Can I use great stuff around fireplace?
It specifically says that even the fireblock stuff “should not be used around heaters, furnaces, fireplaces, or recessed lighting fixtures where it contacts heat conducting surfaces. Cured foam is combustible and may present a fire hazard if exposed to flame or temperatures above 240F.”
Can I insulate around gas fireplace?
Insulating Gas Fireplaces
Heatilator gas fireplaces can be vented through the top or the side. A built-in insulation basket is included with the fireplace around the vent. … The fireplace itself is heavily insulated and you should not install insulation into the walls surrounding the firebox.
Can you use a fireplace with the glass doors closed?
99% of the time your fireplace doors should be OPEN when you are burning a fire. In the off chance you have: ceramic glass doors, a masonry fireplace, and do not care about any heat coming into your room – then it is OK to burn a fire with your glass doors closed.