Insulation between the insert and fireplace walls

[andrij]

I have an older regency r14 insert that I recently installed into an existing fireplace. I wanted to close up the gap between the stove and the brick of the fireplace. Is there any insulation that can be used to fill the gap? It is about a 6 in gap on either side. I have some leftover r13 fiberglass insulation, would that be safe? Essentially, is there any insulation that can safely make contact with a wood stove. Thanks

 

[begreen]

Use Roxul (mineral wool) insulation or micore board.

Is there a block-off plate installed at the damper area?

 

[andrij]

There is not a block off plate. That's a project I was not able to handle before winter. I hope to do it in the spring. Why do you ask? Is there some concern with that? But the Roxul looks like what I need as long as it can withstand the heat. Thanks a lot for the suggestion.

 

[Oldman47]

Roxul is rated for the high temperatures, 2150ºF, while fiberglass is not. You want the "comfort batt" not the sound deadening stuff.

 

[begreen]

You can also use Roxul to stuff around the liner before the block-off plate is added.

 

[andrij]

Thanks a lot of the advice. Does anyone know where I can get a small amount of Roxul? My Home depot only sells batts of 12 rolls ,and looking online has not been successful. And since I just need it for around the stove, I really don't a huge amount.

 

[firefighterjake]

Thanks a lot of the advice. Does anyone know where I can get a small amount of Roxul? My Home depot only sells batts of 12 rolls ,and looking online has not been successful. And since I just need it for around the stove, I really don't a huge amount.

You might try a plumbing supply place . . . I bought a 3 or 4 foot piece a few years back.