Forno Bravo Forum: The Wood-Fired Oven Community

Forno Bravo Forum: The Wood-Fired Oven Community (http://www.fornobravo.com/forum/)
-   Pompeii Oven Construction (http://www.fornobravo.com/forum/f8/)
-   -   Mortar Joints (http://www.fornobravo.com/forum/f8/mortar-joints-19014.html)

K79 03-01-2013 06:18 AM

Mortar Joints
 
Hello all,

I have a question regarding joint spacing. I'm no mason but I've been doing a lot of reading on this issue. I posted a picture of what I'm talking about in my thread called "K79 Oven Build". The joint spacing for my soldier course is 9/16" on the outside edge and are butted right up against each other on the inside. Is this spacing ok? Do I put firebrick wedges in there, if so do they span the entire joint? Also same question for all of my chains once I start them? Again, I'm totally new to this.

Thanks !

Tscarborough 03-01-2013 07:12 AM

Re: Mortar Joints
 
As tight as you can get them on the inside,the outside doesn't matter, just stuff them full of mortar. What type of refractory cement are you using?

K79 03-01-2013 07:38 AM

Re: Mortar Joints
 
Quote:

Originally Posted by Tscarborough (Post 146700)
As tight as you can get them on the inside,the outside doesn't matter, just stuff them full of mortar. What type of refractory cement are you using?

I'm not sure yet, what should I be looking for? Side note, do you live in Maine?

K79 03-01-2013 07:39 AM

Re: Mortar Joints
 
This illustrates my question. Also are the exact dimensions of a 9x4.5x2.5 fire brick the actual dimensions? I know cinderblocks differ.

http://i1342.photobucket.com/albums/...ps1d36784a.png

Les 03-01-2013 09:08 AM

Re: Mortar Joints
 
Have the brick touch on the inside. The 1/2 spacing on the back is acceptable. I would avoid the 2 inch space. Lay the brick out differently than what you have drawn to avoid it. Also, what's up with the space at the top?

K79 03-01-2013 09:18 AM

Re: Mortar Joints
 
Quote:

Originally Posted by Les (Post 146708)
Have the brick touch on the inside. The 1/2 spacing on the back is acceptable. I would avoid the 2 inch space. Lay the brick out differently than what you have drawn to avoid it. Also, what's up with the space at the top?

The space at the top will be the keystone, but not sure what the shape will be until I figure out the spacing of the joints. If I make the 2" space smaller (say 1/2") and keep the 1/2" joints for all the rest, then my keystone will be very large at the top and very small at the bottom. Is this ok? I'll send a pic to illustrate once I have this drawn up.

Thanks

Cheesesteak 03-01-2013 09:33 AM

Re: Mortar Joints
 
As I built my oven - I used the many, many, many brick shims left from cutting as shims to fill all the voids between bricks. Even the 1/2" gaps. Don't know if it made any difference - but I wanted to make sure I didn't have any large mortar joints.

Your mileage may differ . . .

K79 03-01-2013 09:35 AM

Re: Mortar Joints
 
Quote:

Originally Posted by Cheesesteak (Post 146711)
As I built my oven - I used the many, many, many brick shims left from cutting as shims to fill all the voids between bricks. Even the 1/2" gaps. Don't know if it made any difference - but I wanted to make sure I didn't have any large mortar joints.

Your mileage may differ . . .

There must be a minimum amount of mortar you need to use tho right. You couldn't have cut the wedges and crammed them in there with no mortar.

K79 03-01-2013 09:37 AM

Re: Mortar Joints
 
If I reduce the 2" gap to about 1/2" like the rest it makes my dome height way to high. This can't be unique to my oven, everyone must have come across it.

http://i1342.photobucket.com/albums/...ps27ed2f7e.png

Would this option be ok to do structurally??

http://i1342.photobucket.com/albums/...psafe2ea09.png

Tscarborough 03-01-2013 09:56 AM

Re: Mortar Joints
 
Do the sailors like this:

http://brokebrick.com/081212genesoven1.jpg


All times are GMT -7. The time now is 05:56 PM.

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