#1  
Old 07-29-2010, 05:28 PM
Apprentice
 
Join Date: May 2010
Location: Napa, CA
Posts: 150
Default Oven Dome Mortar Mix?

I will be starting my 42" diameter WFO dome (I have a lot of pics posted in the thread My Build (Started in Napa, WFO dome & slab questions)) and I need some clarification on the mortar mix to use for the fire bricks that make up the dome.

Is the following mix the one to use?

1 part portland
3 parts sand
1 part lime
1 part fire clay


And for the sand, can I use the standard plaster sand that I normally use for masonary work?



Thank you, Eric.
Attached Thumbnails
Oven Dome Mortar Mix?-wfo-stand-01.jpg   Oven Dome Mortar Mix?-oven-storage-02.jpg   Oven Dome Mortar Mix?-slab-prep-01.jpg   Oven Dome Mortar Mix?-cmu.jpg  

Last edited by EricU; 07-29-2010 at 05:39 PM.
Reply With Quote
  #2  
Old 07-30-2010, 12:42 AM
Apprentice
 
Join Date: May 2010
Location: Napa, CA
Posts: 150
Default Re: Oven Dome Mortar Mix?

Or should I use "Heat Stop"?

I could not find the link to the FB product? and wouldnt the shipping on a 50# bag kill?

Thanks again, Eric.
Reply With Quote
  #3  
Old 07-30-2010, 03:57 AM
nissanneill's Avatar
Il Pizzaiolo
 
Join Date: Apr 2007
Location: Adelaide, South Australia
Posts: 1,877
Thumbs up Re: Oven Dome Mortar Mix?

Hi Eric,
I would use (as I did on my 40" Pompeii build) brickie sand rather than plastering/rendering sand. I believe this is a little more 'fatty' than plaster and.
I personally would not use the refractory cement as I have not been impressed by the many postings in this forum reporting considerable cracking when using it when (please correct me if I'm mistaken folks), but I haven't seen one report of cracks when using the 'poor man's mortar mix.

Cheers.

Neill
__________________
Prevention is better than cure, - do it right the first time!

The more I learn, the more I realise how little I know


Neillís Pompeiii #1

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

Neillís kitchen underway

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 07-30-2010, 04:33 AM
dmun's Avatar
Moderator
 
Join Date: Jul 2005
Location: New Jersey USA
Posts: 4,216
Default Re: Oven Dome Mortar Mix?

As to the question of sand, it's reported that really fine sand makes a difference when mortaring our narrow joints.
__________________
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 07-30-2010, 09:42 AM
Apprentice
 
Join Date: May 2010
Location: Napa, CA
Posts: 150
Default Re: Oven Dome Mortar Mix?

So where does one get the finer sand? When I do masonary work, I just go to the yard and ask for "plaster sand"?

Thanks for the help, I really dont think I would have done this project without this forum and your guys help.

Eric.
Reply With Quote
  #6  
Old 07-30-2010, 11:41 AM
dmun's Avatar
Moderator
 
Join Date: Jul 2005
Location: New Jersey USA
Posts: 4,216
Default Re: Oven Dome Mortar Mix?

It's sometimes called "silica sand" and it's sold in various meshes for abrasive finishing, or sandblasting.
__________________
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
  #7  
Old 07-30-2010, 06:32 PM
Apprentice
 
Join Date: May 2010
Location: Napa, CA
Posts: 150
Default Re: Oven Dome Mortar Mix?

Quote:
Originally Posted by dmun View Post
It's sometimes called "silica sand" and it's sold in various meshes for abrasive finishing, or sandblasting.
But Where do I get this finer sand?

Thanks, Eric.
Reply With Quote
  #8  
Old 07-30-2010, 06:59 PM
Master Builder
 
Join Date: Jul 2009
Location: Los Angeles
Posts: 942
Default Re: Oven Dome Mortar Mix?

Quote:
Originally Posted by EricU View Post
But Where do I get this finer sand?
I picked up a 100lb bag of silica sand at Home Depot.

George
__________________
George


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


Weber 22-OTG / Ugly Drum Smoker / 34" WFO
Reply With Quote
  #9  
Old 07-30-2010, 07:12 PM
Tscarborough's Avatar
Il Pizzaiolo
 
Join Date: Oct 2009
Location: Ausitn
Posts: 3,128
Default Re: Oven Dome Mortar Mix?

Plaster sand, AKA Torpedo sand, AKA concrete sand, AKA setting sand has too big of aggregate allowed (up to 1/4"). Since the goal is 1/16th joints (but the reality is <3/8"), any fine sand will work. Masonry sand, play sand, sugar sand, finer grade blasting sands, but NOT All Purpose sand.
Reply With Quote
  #10  
Old 07-30-2010, 07:14 PM
Apprentice
 
Join Date: May 2010
Location: Napa, CA
Posts: 150
Default Re: Oven Dome Mortar Mix?

Quote:
Originally Posted by fxpose View Post
I picked up a 100lb bag of silica sand at Home Depot.

George
Home Depot I have heard of! As a matter of fact I have my own parking spot and they all yell "ERIC" when I walk in!


Thanks for the lead, Eric.
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
Why Italian Wood-Fired Ovens are Round james Newbie Forum 50 04-01-2014 10:14 PM
Modular Oven Rebuilt blackjack Modular Refractory Oven Installation 6 05-24-2010 10:35 AM
Mortar and a Poratable oven ritchie UK Design Styles, Chimneys and Finish 1 03-12-2009 08:33 PM
Iron Oven Dome! southpaw Pompeii Oven Construction 1 10-13-2007 07:44 AM
Refractory mortar for oven dome naplesbuilder Pompeii Oven Construction 0 05-09-2006 08:19 PM


All times are GMT -7. The time now is 12:40 AM.

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