fireplace door seal
Our masonry fireplace has the typical metal framed glass doors. The frame clips onto the fireplace opening and the previous owner stuffed fiberglass between the metal and bricks. I assume this is to minimize air infiltration.
This doesn’t seem like a great idea to me, but is this actually correct or is there a better way?
I though FG was flammable and does nothing to stop air infiltration. Seems like a good caulking or fireproof foam should be used. Or even some sort of fireproof gasket or at least mineral wool.
Fg is NOT flammable, nor will it support combustion by itself. FG packed in tightly enough WILL decrease the airflow around the opening, making it a tad more efficient.
IOW, yer fine as long as the paper is not still there, and it is packed with a certain amount of density.
Spheramid Enterprises Architectural Woodworks
"Its MINE, I'll wash it as fast as I want"
If you pull up a Material Safety Data Sheet on a typical fiberglass batt, you get something like this:
for fiberglass insulation, the stuff that is packaged with it to contain it or to hold it together seems to be the largest risk:
" Chemicals in adhesives,facings or plastic packaging products that do not present a health hazard under normal conditions may be released during a fire. Toxic fumes and gases that may result from incomplete combustion include carbon monoxide, hydrogen chloride and low-level cyanides. In case of overexposure, remove to fresh air. If breathing is difficult, administer oxygen and consult a physician."
So, take that for what it's worth.