#1  
Old 05-01-2008, 05:28 AM
Serf
 
Join Date: Apr 2008
Location: Australia
Posts: 20
Default Assembling Cal Sil insulation

Hi to everyone.

My question is do I need to bond together the Cal Sil insulating sheets under my oven floor, or just place them flush against beach other? The boards are 1000 mm x 610 mm, so there will be some seams under the floor.

I will be pouring a 4" vermiculite hearth, plus the 2" insulating boards on top. My oven floor will consist of 12" x12" x 2" refractory tiles. My understanding is the Calsil can sit directly on the vermiculite, and the oven floor can sit directly on the Calsil.

I have also been reading many discussions regarding more or less thermal mass in the oven floor, heat up times, loss of floor heat etc.
With the help of some sound contributions to the forum, I have concluded:

Because I will have both Vermiculite and Cal Sil insulation, I should not lose too much heat from the slightly thinner 2" floor, and I should also get the floor temp up quicker. Also there will be less seams, therefore less gaps for heat loss? Does this make sense??

All the best
Reply With Quote
  #2  
Old 05-07-2008, 09:44 AM
Apprentice
 
Join Date: Sep 2007
Location: USA
Posts: 116
Default Re: Assembling Cal Sil insulation

You are correct with that insulation you are more than fine at the bottom...I put only 2" boards on top of the heart.
I would not worry about the joints, if you need just level the boards with some fire clay.
__________________
Ciao Carlo


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Reply With Quote
  #3  
Old 05-07-2008, 02:15 PM
Serf
 
Join Date: Apr 2008
Location: Australia
Posts: 20
Default Re: Assembling Cal Sil insulation

Thanks very much. I will post some photos soon on my progress to date - next to do is put the floor down and start building!

All the best
Reply With Quote
  #4  
Old 05-07-2008, 03:04 PM
dmun's Avatar
Moderator
 
Join Date: Jul 2005
Location: New Jersey USA
Posts: 4,216
Default Re: Assembling Cal Sil insulation

Just as a side note, yesterday I had a very hot fire in my oven, burning some scrap lumber. After dinner I noted that my landing, which is a bracket supported piece of two inch slate was very hot to the touch, as well as the arch over the opening, but the slab under the oven floor was still cool to the touch.

This is with 2.5 inch insblock19, which is not supposed to be as good an insulator as cal-sil.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Adding Hearth Insulation Xabia Jim Tools, Tips and Techniques 28 02-27-2008 12:33 AM
insulation board dimensions mieno Getting Started 0 02-01-2008 03:28 PM
Fires now up to temp but not sure if enough insulation waynebergman Pompeii Oven Construction 2 01-22-2008 04:11 PM
Insulation Question waitingtocook Getting Started 2 02-20-2007 04:01 PM
Insulation question sonomacast Newbie Forum 2 08-11-2006 11:43 PM


All times are GMT -7. The time now is 11:20 PM.

Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
2006/10 Forno Bravo, LLC