#1  
Old 08-01-2009, 11:55 AM
Serf
 
Join Date: Jun 2009
Location: u.k
Posts: 7
Default Fire blankets for insulation

Hi there,
I'm just about ready to insulate the dome....finally!
I've been pricing up ceramic blanket and its very expensive. I've been asking for advice on another forum(green) i frequent, and somebody mentioned using old reclaimed non asbestos fire blankets as they have a very very low thermal conductivity and will be very cheap...a couple of quid each. Do you think these would work under 4/5" vermiculite/ cement mix.

chicken
Reply With Quote
  #2  
Old 08-01-2009, 12:21 PM
dmun's Avatar
Moderator
 
Join Date: Jul 2005
Location: New Jersey USA
Posts: 4,216
Default Re: Fire blankets for insulation

Now there's a question we've never seen before. What were they used for? Are you sure they're asbestos free?

Anybody know about these?
__________________
My geodesic oven project:
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 08-01-2009, 02:07 PM
Serf
 
Join Date: Jun 2009
Location: u.k
Posts: 7
Default Re: Fire blankets for insulation

Hi Dmun,
Over here in the uk, fire blankets are used for mainly kitchens(deep fat fryers) apparently they were of asbestos construction, but nowadays they're of ceramic fibre(glass) construction. I use a small version at work when i'm soldering copper, and i dont mark paintwork after a few mins @ 450 degs.

chicken
Reply With Quote
  #4  
Old 08-01-2009, 03:46 PM
Apprentice
 
Join Date: Jul 2008
Location: Newcsatle, Australia
Posts: 104
Default Re: Fire blankets for insulation

My only thoughts are that the fire balnket is designed to stop oxygen getting to a fire to suffocate the fire and put it out. I think because the blankets are ment to be thin and flexable that would mean it would have to have a fairly tight weave.

M understanding is that the idea of the ceramic insulation is that it is 'fluffy' allowing tiny air pockets to be created within the blanket which don't move around or can transfer heat easily to each other.

I think that the fire blankets would work but you would need to find alot of them to get enough layers of blankets.

If you are after a cheaper alternative then I would suggest the vermiculite/perlite types.

Cheers
James
__________________
Real men cook with fire

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Reply With Quote
  #5  
Old 08-02-2009, 12:51 AM
Serf
 
Join Date: Jun 2009
Location: u.k
Posts: 7
Default Re: Fire blankets for insulation

Me again,
I been searching the net for brochure information of ceramic fibre and came across this :

******x 3180 Blanket is a needled blanket made from our CeraTex ceramic fiber. The blanket is ightweight, flexible, and available in a wide variety of thicknesses, widths and densities.

CeraTex 3180 Blanket resists temperature as high as 2300. This material is lightweight and has very low thermal conductivity, excellent handling strength, low heat storage, thermal shock resistance and corrosion resistance (commonly used acid and alkali). It also provides excellent sound absorption and excellent fire protection.

.................................................. ...................

I also tried wikipedia, and blanket is used for protection of equipment and not for insulating as i thought.

Most fire blankets are appox 1mx1m in size so i would probably need 2-3 .......2 each = 6 total then insulate with vermiculite/cement.

I've done my bit for mother earth as all my materials have been reclaimed......even the insulation now!!

I keep you all posted folks.

chicken
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
Lighting a fire jschadt Newbie Forum 12 05-11-2014 01:18 AM
when is a brick a brick or a fire brick ??? maheel Newbie Forum 15 02-16-2014 05:59 AM
Wanting to build a wood fire oven the best way we can Wheels1974 Getting Started 9 05-19-2010 07:53 AM
Fire igloo in Nebraska. Lars Introductions 3 06-06-2009 09:43 AM
Fire Mortar vs. Refax Refractory Mortar southpaw Pompeii Oven Construction 4 04-07-2007 05:02 AM


All times are GMT -7. The time now is 09:49 PM.

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