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-   -   Is 2 inch of Insulfrax enough? (http://www.fornobravo.com/forum/f8/2-inch-insulfrax-enough-13730.html)

mpjfitz 08-04-2010 02:09 AM

Is 2 inch of Insulfrax enough?
 
Hello

The roof of my oven will be a brick half barrel/arch type.

Unfortunately I have had to revist my original design and make the roof lower. This has impacted on the cavity between the dome and the roof. Making it 2 inch at the closest point.

I have 2 rolls of 2 inch insulfrax that will cover the dome, then the voids will be filled with vermiculite.

I was wondering if 2 inch of insulfrax will be enough to stop the heat transfering from the dome to the outer brick roof 'completely??

If not, I am thinking of cutting the bricks in half (along the long edge) so I can get another layer of insulfrax (taking it up to 4 inch) at the closest point. It means more work, but I've invested soooo much time in it so far, it's not a problem :)

Any advise will be appreciated.

Mick

countryboy 08-04-2010 05:02 AM

Re: Is 2 inch of Insulfrax enough?
 
What is the roof made out of? Combustible?

I would think 2" is enough, but curious what the roof is made of.

mpjfitz 08-04-2010 02:03 PM

Re: Is 2 inch of Insulfrax enough?
 
Thanks for the reply

I really hope it will be as it will save quite a bit of extra work.

I'm finishing my roof like this:

http://sphotos.ak.fbcdn.net/hphotos-..._4484362_n.jpg

I'm not sure if this piccie will show. If not I'll sort another

Mick


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