outdoor kitchen and oven base

[stonecutter]

Re: outdoor kitchen and oven base

Stonecutter, that was my thought, would you do it different with the brick channels? Thinking I need a sub base that will not suck up moisture and provide support for the granite. Plus have water raceways to drain.

I don't think I would do the brick channels, mainly because outside of a torrential driving rain falling directly into the vent for hours, I don't see a lot of water getting under the granite. Especially so if your joints are tight and full. With a solid stone for your floor, there is minimal chances for penetration, not like a brick vent landing with many joints..

It's a preference thing for me...to set stone into the solid setting bed. Besides, if your vent landing is a one piece stone ...( I'm assuming ) ....you (should) put a slight fall on it to encourage any driving rain to run away from the oven hearth.

All that said, if you want brick channels I don't see any big issues, as long as water drains freely. Sound like you have that covered.

[Campmaki]

Re: outdoor kitchen and oven base

Stonecutter, that was my thought, would you do it different with the brick channels? Thinking I need a sub base that will not suck up moisture and provide support for the granite. Plus have water raceways to drain.

[stonecutter]

Re: outdoor kitchen and oven base

John thanks for the compliments. I am sure my wife and I will have a great time feeding everyone!!!!! Stonecutter, there are weeps in the brick allowing tne water to pass all the way to the bottom of the precast base panels. Nice sketch, just one thing, the granite slab will be flush all the way out to to the outside edge. In other words all on the same plane from oven entrance to outside edge that hangs over front of brick by 1". So I would not need the 2 3/4 ".Wayne

Ahhh...ok. I should have asked if you were going to do that instead of launching into all that. So what are you doing under the vent landing...brick channels?

[Campmaki]

Re: outdoor kitchen and oven base

Great-looking kitchen and oven, Wayne. You're gonna love cooking in it!

John, just wondering why I do not see you posting much, hope all is well.Wayne

[Campmaki]

Re: outdoor kitchen and oven base

John thanks for the compliments. I am sure my wife and I will have a great time feeding everyone!!!!! Stonecutter, there are weeps in the brick allowing tne water to pass all the way to the bottom of the precast base panels. Nice sketch, just one thing, the granite slab will be flush all the way out to to the outside edge. In other words all on the same plane from oven entrance to outside edge that hangs over front of brick by 1". So I would not need the 2 3/4 ".Wayne

[GianniFocaccia]

Re: outdoor kitchen and oven base

Great-looking kitchen and oven, Wayne. You're gonna love cooking in it!

[stonecutter]

Re: outdoor kitchen and oven base

Ok so now I get your thought. Would you use the ceramic insulation as a thermal break just behind the riser? You mentioned in an earlier post about capping this off with some homebrew or was it something else? The reason as you know, with the water drainage slots is to get it out along with the pitched pan. Something totally solid will make it for water to drain. The drawback is a subsurface that has voids. With that in mind, a dropped log or tool could cause damage to the granite. The slots would need to be narrow. Thinking of maybe cotton rope wicks but these have been proven to be not effective over time. Maybe they could be installed longer and your mix put in place. Then pull them out after everything is hard. I believe we have a plan, thanks S.C.

Ok. Thermal break goes between the oven hearth and the vent landing. I used ceramic rope to fill the break, then made a slurry of Portland/acryl 60 as a rigidizer, so no fiber contaminates the cooking surfaces.

You work in commercial masonry right? Grab a scrap of drainage mat or mortar net before put down your setting bed. Then you have a drainage plane and a fully bedded granite landing when your done.

Here's a crappy sketch of what I was talking about with the riser......

[stonecutter]

Re: outdoor kitchen and oven base

Quick question...if a lot of water somehow gets under your granite vent landing, where is is draining too? You have weeps in the brick?

[stonecutter]

Re: outdoor kitchen and oven base

I'm going to do a napkin sketch...give me 15 mintutes.

[Campmaki]

Re: outdoor kitchen and oven base

Ok so now I get your thought. Would you use the ceramic insulation as a thermal break just behind the riser? You mentioned in an earlier post about capping this off with some homebrew or was it something else? The reason as you know, with the water drainage slots is to get it out along with the pitched pan. Something totally solid will make it for water to drain. The drawback is a subsurface that has voids. With that in mind, a dropped log or tool could cause damage to the granite. The slots would need to be narrow. Thinking of maybe cotton rope wicks but these have been proven to be not effective over time. Maybe they could be installed longer and your mix put in place. Then pull them out after everything is hard. I believe we have a plan, thanks S.C.

[stonecutter]

Re: outdoor kitchen and oven base

OK so now I am a little confused. Where does the 2 3/4" rip go? To the back at the oven entrance/ back of pan? Is this acting as a thermal break? I was thinking of using some ceramic blanket, 3 1/2 to 4 " wide x 1" wide stood up at the transition point. Then I was going with your original post on how to seal this joint. As far as the perlite mixture, this will give the the landing some insulating value? How will a weep system work when everything is solid under the granite? This is why I was thinking firebrick rips under the granite. I could leave some slots or alleys from the moisture to run down. I am having a hard time seeing what you are thinking.

I don't see a problem if you wanted to use brick under the granite, if you think that much water is going to get in there. Just keep in mind that voids that drain also hold frozen water too. Perlcrete is fairly permeable...though I wouldn't call it free draining. I personally prefer to bed stone as solidly as possible. As for insulation under the vent floor, it doesn't matter if you do or not.

I suggested the rip because I'm not sure how you are planning to transition the height difference between your hearth floor and the granite coping. The rip piece goes across the face of your arch like a riser, the granite vent hearth piece lays over it like a tread. So if you are looking at your vent arch from the side, you won't see the difference in hearth height.

[Campmaki]

Re: outdoor kitchen and oven base

OK so now I am a little confused. Where does the 2 3/4" rip go? To the back at the oven entrance/ back of pan? Is this acting as a thermal break? I was thinking of using some ceramic blanket, 3 1/2 to 4 " wide x 1" wide stood up at the transition point. Then I was going with your original post on how to seal this joint. As far as the perlite mixture, this will give the the landing some insulating value? How will a weep system work when everything is solid under the granite? This is why I was thinking firebrick rips under the granite. I could leave some slots or alleys from the moisture to run down. I am having a hard time seeing what you are thinking.

[stonecutter]

Re: outdoor kitchen and oven base

Stone cutter, So let me try again. In my vent area, I installed a 3 sided flashing pan, see my previous posts and pictures. The pan goes from the thermal break I created at the oven entrance outward to the vent floors outer edge. I extended the pan under the vent sidewalls. When I installed the pan, I put a rich grout mixture under the pan to attain pitch outward. So right now I have just the pan in the vent area on the concrete slab with the semi circular vent arch sitting on the pan. I cut the first course of firebrick to get them back to level because the pan is pitched towards the outside. So at the inner pans edge which is the transition from oven dome to floor of vent, I have 4 1/2 in. {2 1/2 in firebrick plus 2 in ceramic floor insulation minus 1/2 in that the pan is raised up. I plan on putting granite slabs on the brick ledges I have built and this same granite will flow into the vent area as the floor. What would you put under the granite? The granite is 1 1/4 in. thick, so I have 2 3/4 inches that needs to be put under the granite. I do not want to put insulation under it, because it could get wet. Would you put fire brick under the granite? How important is it to have the vent floor insulated? It doesn't need to be , does it? Here are 2 pictures showing my flashing pan. One being a side view, the other a front view at the vent. Wayne

Wayne, sorry I missed this.

OK...what I am going to assume is that you are keeping the continuous plane of the granite the same all the way around the oven and across the face of your vent opening. That will create a reveal of granite from one side of your vent arch to the other along the springline...right? So, you asked what I would do...here it is.

I would rip a piece of granite at 2 3/4" and set it like a riser across the vent opening. Then behind it, I would make some perlcrete at 8-10:1 and put a bed down flush with the granite riser...it will be below your hearth floor height by 3(-) cm. Finally, set your granite vent landing on top of the perlcrete and set it flush with your hearth floor using a slush mortar, which can be made of the component mix or just a standard type S mortar.

Doing it this way doesn't create a joint between your landing floor and riser so if you want one, cut the riser accordingly.

[NCMan]

Re: outdoor kitchen and oven base

Wayne....great looking job. Time to enjoy!!

[Campmaki]

Re: outdoor kitchen and oven base

And a few more pictures to post, Just wanted to say thanks to everyone with input and thoughts helping my build with issues. I am just like most on this site, building their first oven. Thanks to the many who have made this site what it has become. Wayne