Old 06-01-2009, 12:39 PM
Join Date: Oct 2008
Location: CT
Posts: 173
Default vault opening vs outside opening

I know that the vault opening is critical to proper fireing...60% of the interior dome height. (ex. 21" dome height gets a 12.6" vault opening). I have seen several pizza ovens recently and have noticed that there has been smoke residue on the outside of the outer opening face. When looking at the possible causes I did notice that the outside opening was taller than the dome opening. I could see that there was no smoke ledge to keep that from happening. Would it not be better to have the outside opening slightly lower than the inside so you would get a better airflow going up the chimney from the inside out. Any thoughts on this would be greatly appreciated.
Reply With Quote
Old 06-01-2009, 03:39 PM
Join Date: Oct 2008
Location: Australia
Posts: 62
Default Re: vault opening vs outside opening

I debated this during my build too, but ended up omitting the smoke ledge for the sake of ease of access to the oven.
A smoke ledge, or outer arch lower than the inner one, would make it very low to see inside the oven and place wood/pizza/food etc and I didn't want to risk having a WFO that was difficult to use for any reason.
Also, the smoke is typically only at startup for me, so it's not that big a deal and the soot can always be washed off.

Another consideration would be to check how deep your entry vault is going to be as this may also impact on which design you use.
Reply With Quote
Old 06-02-2009, 06:44 AM
Join Date: Oct 2008
Location: CT
Posts: 173
Default Re: vault opening vs outside opening

Thanks Glen. The opening to the vault is 21.6" high and 18" wide I will probably make the outer opening wider by several inches (any thoughts on that) and keep the height the same;21.6"
Reply With Quote
Old 06-02-2009, 07:05 AM
DrakeRemoray's Avatar
Il Pizzaiolo
Join Date: Mar 2006
Location: Littleton, CO
Posts: 1,211
Default Re: vault opening vs outside opening

If you cast or build a large vent/ smoke collection area in between the inner and outer openings, you have less chance of getting smoke out the front. If you just put a piece of flue pipe on top of an arch, a lot of smoke is going to slip by that...

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
Old 06-02-2009, 07:36 AM
Join Date: Oct 2008
Location: CT
Posts: 173
Default Re: vault opening vs outside opening

Thanks Drake. That will make the throat (outer to inner opening) a little longer but maybe not by that much. Before I changed my fireplace over to propane I would simply light one piece of newspaper, open the damper and hold it in the flue and I never got any smoke in the house while the fire was starting to get up to a good burn. I would imagine that would work in this case also.
Reply With Quote

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
Oven opening size james Pompeii Oven Construction 69 06-07-2015 09:35 AM
oven opening: arch vs straight sides? carloswlkr Newbie Forum 15 02-24-2009 07:16 AM
To vault or not to vault smuth10 Getting Started 6 11-09-2008 05:11 PM
Vent opening up to Flue Adjustment tdibratt Pompeii Oven Construction 0 08-23-2008 04:29 AM
Door opening size Yahoo-Archive Pompeii Oven Construction 0 03-20-2005 01:11 PM

All times are GMT -7. The time now is 11:57 PM.

Powered by vBulletin® Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
2006/10 Forno Bravo, LLC