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Robthebubble 09-23-2010 05:10 AM

Vent roof?!?!
 
Hi All,

I'm wondering if the vent roof where it joins the flue needs to be constructed of fire brick/insulating concrete or can I use a section of sheet steel bent into the shape of the arch and attached to the brick arch with fire cement?

I think it will be OK or will there be issues with the steel expanding from the heat and then cracking the fire cement?

Thanks

Rob

dmun 09-23-2010 08:40 AM

Re: Vent roof?!?!
 
You can in fact make your entire entry/vent out of metal. They do expand at different rates, so you may want to make your masonry/metal joint somewhat flexible. Most people use some kind of masonry anchor and bolt as the interface, instead of a rigid mortar.

Robthebubble 09-23-2010 09:07 AM

Re: Vent roof?!?!
 
Quote:

Originally Posted by dmun (Post 99656)
You can in fact make your entire entry/vent out of metal. They do expand at different rates, so you may want to make your masonry/metal joint somewhat flexible. Most people use some kind of masonry anchor and bolt as the interface, instead of a rigid mortar.


Great, that's just what I wanted to hear! :D


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