#1  
Old 06-07-2009, 07:35 PM
Peasant
 
Join Date: Aug 2008
Location: North Thompson Valley,British Columbia
Posts: 34
Question Newbie mortar question

Hi, Does anyone know where I can find firebrick mortar in the British Columbia interior? I have found Superior 3000 mortar, but it can only be used for 1/8" applications. Also have some Cercast mix, but it is pretty full of fine gravel, not something I would want to use to try and tamp into the crevices. Any help would be greatly appreciated.
I have been a background reader on this forum for a long time, and have finally gutted it up to get to the actual brick work. The hearth(s) are built on 8"*8" Spruce timbers, all sitting on 24"*24" concrete grade beams. Oven floor set in place, and awaiting the dome. Sorry no pics, spent $$ set aside for camera on brick.
Reply With Quote
  #2  
Old 06-08-2009, 11:38 AM
Peasant
 
Join Date: Aug 2008
Location: North Thompson Valley,British Columbia
Posts: 34
Default Re: Newbie mortar question

Ha, found one. Steel Industrial Supply in Kamloops, BC. Premix Fireclay in 25kg bags. $52.00 Cdn. Seeing as I have a 6 hr round trip to pick this up, anyone got a rough idea of how much one would use to complete a 42" high dome?
Reply With Quote
  #3  
Old 06-08-2009, 11:47 AM
DrakeRemoray's Avatar
Il Pizzaiolo
 
Join Date: Mar 2006
Location: Littleton, CO
Posts: 1,211
Default Re: Newbie mortar question

For the record the HeatStop that many of us have used also says it is for thin mortar joints, but it worked fine for me.
__________________
My Oven 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 06-08-2009, 05:19 PM
Peasant
 
Join Date: Aug 2008
Location: North Thompson Valley,British Columbia
Posts: 34
Default Re: Newbie mortar question

Thanks Drake. Well, I've got a 4 litre pail of it. Maybe I'll start the oven entry pillars and arch with it. Read your build blog by the way, very,very nice.
Another question, if the Pompei plans are correct, there should be no mortar showing at the inside edges of the dome. Is this doable? This is my first project with brick, and I do want to get it right.
Reply With Quote
  #5  
Old 06-08-2009, 05:24 PM
Neil2's Avatar
Il Pizzaiolo
 
Join Date: Oct 2006
Location: Vancouver Island
Posts: 1,374
Default Re: Newbie mortar question

"I have found Superior 3000 mortar, but it can only be used for 1/8" applications."

This stuff works OK. For the parts that will be more than 1/8", extend the mortar mix with mortar sand mixing 1:1. The sand particles act as a "bridge" and reduce shrinkage cracks.
Reply With Quote
  #6  
Old 06-08-2009, 08:02 PM
Peasant
 
Join Date: Aug 2008
Location: North Thompson Valley,British Columbia
Posts: 34
Default Re: Newbie mortar question

Thanks, Neil2. Mortar sand, now does that mean I can justify using the wife's flour sieve? chuckles..... or being a little more serious, I was thinking of using window screen material in a frame, does that sound about the right size? Got lots of clean river sand here.
Reply With Quote
  #7  
Old 06-08-2009, 08:31 PM
Les's Avatar
Les Les is offline
Il Pizzaiolo
 
Join Date: Sep 2005
Location: Carson City, NV
Posts: 2,842
Default Re: Newbie mortar question

Quote:
Originally Posted by skemcis View Post
Another question, if the Pompei plans are correct, there should be no mortar showing at the inside edges of the dome.
Actually, the plans have a mortar joint on the inside - it can be done without one if you spend the crazy time cutting the brick. The verdict is still out if it's the right approach because of spalling. I'll let you know in ten years

Les...
__________________
Check out my pictures here:

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


If at first you don't succeed... Skydiving isn't for you.
Reply With Quote
  #8  
Old 06-08-2009, 09:09 PM
Peasant
 
Join Date: Aug 2008
Location: North Thompson Valley,British Columbia
Posts: 34
Default Re: Newbie mortar question

Les, yeah I figured so. So here is another question. If the arc of the dome is based on the radius of the inside at floor level eg 21", a straight edge centered on the floor and reaching out to the outside of the bricks being laid, if the bricks are positioned/angled correctly the straight edge should lay flat on them, which theoretically should be true for each course. This should give me a reasonably true arc, coupled with an accurately cut keystone. Am I correct in presuming this?
Reply With Quote
  #9  
Old 06-08-2009, 09:17 PM
Les's Avatar
Les Les is offline
Il Pizzaiolo
 
Join Date: Sep 2005
Location: Carson City, NV
Posts: 2,842
Default Re: Newbie mortar question

Quote:
Originally Posted by skemcis View Post
a straight edge centered on the floor and reaching out to the outside of the bricks being laid, ?
Did you mean inside? Yes, for a 42 inch dome, it's a 21 inch radius (on the inside). I cut a form that was true to ideal - you are working with brick so it will not be perfect.

Les...
__________________
Check out my pictures here:

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


If at first you don't succeed... Skydiving isn't for you.
Reply With Quote
  #10  
Old 06-08-2009, 09:37 PM
Les's Avatar
Les Les is offline
Il Pizzaiolo
 
Join Date: Sep 2005
Location: Carson City, NV
Posts: 2,842
Default Re: Newbie mortar question

Quote:
Originally Posted by skemcis View Post
if the bricks are positioned/angled correctly the straight edge should lay flat on them, ?
I re-read your question. Do you mean if you taper every brick (inside to outside) should they lay flat? Absolutely! I advocate a dry stack - if I could do it over, I would give it a shot (but I would still be cutting brick instead of cooking).

Les...
__________________
Check out my pictures here:

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


If at first you don't succeed... Skydiving isn't for you.
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
Refractory Mortar Question Fudugazi Pompeii Oven Construction 22 07-27-2010 07:12 AM
Mortar Question...... interguglielmi Newbie Forum 3 03-08-2009 06:20 PM
DIY fireproof mortar question billten Pompeii Oven Construction 11 12-17-2008 06:30 AM
Cleaning Mortar from Dome Question PizzaJNKY Getting Started 12 12-15-2008 01:13 PM
Newbie, first question. CSWolffe Introductions 5 06-10-2007 05:24 AM


All times are GMT -7. The time now is 10:54 AM.

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