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zekebv 06-09-2013 02:23 AM

Zeke's 40" in Modesto
Greetings, I've set the oven floor and am starting on the first course of the dome. I decided to do half-bricks rather than soldiers. With how big of a gap between the floor and dome wall can I get away? Right now I'm looking at close to 1/4". Is this too much? Thanks.

UtahBeehiver 06-09-2013 06:08 AM

Re: Zeke's 40" in Modesto
1/4" is fine, it fills in with ash anyway . Be sure to cover the gap with duct tape while you are doing your walls to prevent mortar from falling down into the gap. Since the gap acts as an expansion joint between the floor and the the dome. If mortar gets packed into the gap there is the potential of cracking due to the restricted expansion.

zekebv 06-09-2013 07:46 AM

Re: Zeke's 40" in Modesto
Thanks Beehiver - this is definitely a learning process. I've got some pictures and hope to post them. I've admired your build.

zekebv 06-12-2013 11:57 PM

Re: Zeke's 40" in Modesto
1 Attachment(s)
Here's my first picture and it comes with a question. Is it advisable to leave an expansion gap between the oven floor and both inner sides of the entry arch base brick?

In the picture, the arrow pointing right shows the expansion gap that runs along the circumference of the oven floor and the other arrow points to the inner side of the entry arch, which is where I'm wondering about the expansion gap.

zekebv 06-14-2013 07:52 AM

Re: Zeke's 40" in Modesto
Any thoughts on my last question? Thanks.

mrchipster 06-14-2013 08:09 AM

Re: Zeke's 40" in Modesto

Originally Posted by zekebv (Post 155101)
Any thoughts on my last question? Thanks.

I left a gap at the indicated location and it filled with ash and has worked well for 1.5 years now.


boerwarrior 06-14-2013 08:25 AM

Re: Zeke's 40" in Modesto

like you I have about a 1/4 inch expansion gap between my floor bricks and my half-height soldier course. While it is hard to see when the interior temperature is close to 1,000 degrees, my floor doesn't seem to expand a huge amount. Like Utahbeehiver said, the gaps fill with ash anyway! With respect to your other gap near the arch - in my oven it doesn't get incredibly hot at that place on the floor so leaving a gap there is probably not as important. (maybe gets to 400 degree there at a guess? I didn't measure - just guessing)

Remember when you are firing the cold air is coming in at floor level so that probably keeps things a little cooler down there.

My bigger issues are higher up on the inner arch where is does get incredibly hot - I have some cracks up there which I needed to fill.

Hope this helps

zekebv 06-14-2013 09:30 AM

Re: Zeke's 40" in Modesto
Alright, thanks for the thoughts gents. Neil, that makes sense about the cold air coming in through the opening. I'm going to live with it as it is an forge ahead!

aceves 06-14-2013 03:59 PM

Re: Zeke's 40" in Modesto
Hi Zeke,

Glad to see a fellow NorCal builder starting out! Keep us posted and include pics. And to get the best use of this forum, post your questions (about anything) during the building process and we will try to help out as best we can. Good luck!


zekebv 06-14-2013 11:02 PM

Re: Zeke's 40" in Modesto
Aceves, yours is one of the builds I've studied carefully. You're finish details are great!

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