Few days ago company installed natural gas fireplace insert. I am planning to put in face of my fireplace drywall. I bought Fire rated drywall and planning to make sure that drywall is at least 3 inces from insert.
I run fireplace for an hour and checked around fireplace to see if surround is hot. It is room temperature on the sides and bottom of fireplace. But on the top of the insert I have and opening about 1 feet high (arch form, 1 feet at the top level). That opening is preatty hot. How safe is to cover this opening with fire rated drywall? Any other options I would have?
Thank you very much.