Block off plate or fiberglass insulation?

[olskool53]

What do you guys think about stuffing insulation around the liner? How safe is it? Should i just fab a block off plate or does insulation work just as well?

 

[Valhalla]

I would go for the block off plate. You will never give it a second thought, only a feeling of a job well done!

 

[elmoleaf]

I've had just insulation for 4 years with no problems. It's not visible, so the ugly look isn't an issue. However, if there were ever a fire in the liner, I'd feel a lot better with a solid plate in addition to the insulation.

 

[wenger7446]

x2 on the block-off plate. Increase your safety and decrease your wood consumption.

If you are going to something. Do it right.

 

[olskool53]

Thats how I feel about it but I had a stove guy tell me to just pack insulation up there and be done with it. Started to make me think twice.

 

[Valhalla]

Thats how I feel about it but I had a stove guy tell me to just pack insulation up there and be done with it. Started to make me think twice.

Your stove guy may be a bit of a hack! No insult, just an observation.

When it comes to anything fire related, I will always do it the best way possible.

Safety first!

 

[jtp10181]

Fiberglass insulation is not allowed around wood liners. Its melting point is below the rated temps for the liner system in the event of a chimney fire.

 

[Berone]

What about rock wool?(Soundire blanket). I ask because I have a few batts left over from a project and this looks like a good place to put them.

Thanks,
Anthony

 

[jtp10181]

Rock wool should be fire / melt proof. That is pretty much wat the material used to insulated the liners is. That is safe to put around the liner.

 

[oconnor]

most rock wool won't cause a problem, but it isn't likely spec'd to what liner insulation is. Most rockwool you get wasn't intended for heat exposure all the time, but to create a firebreak during the one time it gets exposed to a fire. I have it around my flue as a block off plate for now until I get off my butt and make my block off plate, and when I did some work this summer noticed some discoloration from the heat, but it is't going to start a fire or something IMHO.

 

[newstove]

I made my block off "plate" out of this stuff. Works awesome, I used the 1" thick stuff. Insulates as well.

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