foil tape on chimney ?

[RustyShackleford]

I have some adhesive metal tape - not sure exactly what it's called, but it's fairly thick foil, aluminum maybe, with adhesive backing. Used to seal ductwork, I believe.

Is it ok to use this tape on metal-bestos chimney pipe ? Where mine passes though a metal plate on the wooden ceiling, there is a good-sized annular gap (1/4" in spots). Seems worth sealing - not for stove operation, but just for good weatherproofing. Nothing to burn really, except the adhesive. It might dry up and fall off at some point, so I could put a big hose clamp around the pipe there.

Better way to do this ?

 

[mol1jb]

My first thought would be high temp silicone. But 1/4 gap may be a bit too large for that.

 

[DAKSY]

If the pipe & trim piece are black, I'd run a bead of black RTV to cover the gap.

 

[RustyShackleford]

Thanks guys. Yes, I think the the gap is a little too large for silicon. And the chimney is the usual stainless, and the plate in the ceiling is aluminum.

 

[Starstuff]

Is the pipe double/triple wall? If so, it might not get all that hot and the adhesive tape might be able to stand up to it. But, you can also buy high-temperature adhesive metal tape specifically for this purpose. Not sure how well it works, but the product exists.

 

[DAKSY]

You can use the foil tape, but getting it to look nice is an issue.
There shouldn't be a considerable amount of heat in that area,
so it should hold up for a while.
If you smooth it carefully with a wooden tongue depressor, it'll
look OK - not great - but OK.

 

[RustyShackleford]

Is the pipe double/triple wall? If so, it might not get all that hot and the adhesive tape might be able to stand up to it. But, you can also buy high-temperature adhesive metal tape specifically for this purpose. Not sure how well it works, but the product exists.

Double wall metalbestos - so 8" OD and 6" ID. It's too hot to touch, but only just barely, with a raging fire. Maybe my metal tape is the high-temp stuff. But, where would I go to buy that ?

getting it to look nice is an issue

Should have said: I'll do it from above, in the attic, on top of the metal plate in the ceiling - so looks shouldn't be much of an issue, except looking through the gap.

 

[Starstuff]

Double wall metalbestos - so 8" OD and 6" ID. It's too hot to touch, but only just barely, with a raging fire. Maybe my metal tape is the high-temp stuff. But, where would I go to buy that ?

http://www.amazon.com/3M-High-Tempe...80&sr=1-1&keywords=high+temperature+flue+tape

 

[RustyShackleford]

http://www.amazon.com/3M-High-Tempe...80&sr=1-1&keywords=high+temperature+flue+tape

Thanks for "googling that for me". Just ordered a roll !

 

[begreen]

Could you stuff some kaowool or stove gasket around the gap?

 

[RustyShackleford]

Could you stuff some kaowool or stove gasket around the gap?

I'm gonna try that tape for now.