#1  
Old 04-18-2010, 10:31 AM
Derkp's Avatar
Apprentice
 
Join Date: Apr 2010
Location: Utah
Posts: 188
Default Perlite equal to Vermiculite?

Can I interchange perlite with vermiculite in oven applications?

Does Perlite work as well for the insulation slab under the firebricks?

Any tricks for mixing with concrete?
Thanks
Reply With Quote
  #2  
Old 04-18-2010, 10:39 AM
Neil2's Avatar
Il Pizzaiolo
 
Join Date: Oct 2006
Location: Vancouver Island
Posts: 1,374
Default Re: Perlite equal to Vermiculite?

"Can I interchange perlite with vermiculite in oven applications?"

Yes. Go for the "course" grained perlite.
Reply With Quote
  #3  
Old 04-18-2010, 06:37 PM
kebwi's Avatar
Il Pizzaiolo
 
Join Date: Aug 2009
Location: Seattle, WA, USA
Posts: 1,010
Default Re: Perlite equal to Vermiculite?

Mix perlite more gently than you would vermiculite. It is prone to breaking down to smaller and smaller particles during mixing. Other than that, they're basically equivalent.
__________________

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

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

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

Reply With Quote
  #4  
Old 04-18-2010, 07:02 PM
dmun's Avatar
Moderator
 
Join Date: Jul 2005
Location: New Jersey USA
Posts: 4,216
Default Re: Perlite equal to Vermiculite?

I used perlite and like the fact that the white color lets you know when it's fully mixed with the portland. But yes, they both work. You can either mix the dry ingredients and carefully trowel in the water, or mix the water and portland into a slurry and mix in the light stuff. This technique needs a mixing paddle in a power drill to mix the slurry.
__________________
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
  #5  
Old 04-18-2010, 08:06 PM
Derkp's Avatar
Apprentice
 
Join Date: Apr 2010
Location: Utah
Posts: 188
Default Re: Perlite equal to Vermiculite?

Great! We have already bought 3- 4cu/ft bags, hoping it would work.

How thick of layer do you think would be appropriate for a oven floor of 4 1/2 firebrick, the brick are 4 1/2 X 3-6 in X18 long, and overall oven dimensions (inside) of 28 X 36?

Thanks,

Derk
Reply With Quote
  #6  
Old 04-19-2010, 08:55 PM
Neil2's Avatar
Il Pizzaiolo
 
Join Date: Oct 2006
Location: Vancouver Island
Posts: 1,374
Default Re: Perlite equal to Vermiculite?

four inches
Reply With Quote
  #7  
Old 04-19-2010, 09:10 PM
Mitchamus's Avatar
Journeyman
 
Join Date: Aug 2008
Location: Sydney & Snowy Mountains
Posts: 382
Default Re: Perlite equal to Vermiculite?

If you're mixing in a wheel barrow - add the water slowly.

If you just dump half a bucket of water in - the Perlite will fly out of the barrow and go everywhere!!

(don't ask me how I know...)
__________________
-------------------------------------------
My 2nd Build:

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Reply With Quote
  #8  
Old 04-20-2010, 10:08 AM
Neil2's Avatar
Il Pizzaiolo
 
Join Date: Oct 2006
Location: Vancouver Island
Posts: 1,374
Default Re: Perlite equal to Vermiculite?

Mix gently. Try to avoid breaking down the perlite particles.
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
Perlite vs Expanded Perlite or Vermiculite lwood Newbie Forum 3 08-29-2009 01:07 PM
vermiculite vs. perlite? KEmerson Pompeii Oven Construction 10 08-19-2009 04:40 PM
Vermiculite or Perlite mikeye15 Pompeii Oven Construction 2 06-02-2009 04:21 PM
Vermiculite vs. Perlite vs. blend Adrian Getting Started 7 01-15-2009 07:30 PM
questions about perlite and vermiculite hoerath7 Getting Started 2 08-01-2007 07:13 PM


All times are GMT -7. The time now is 10:25 AM.

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