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Pompeii Nate's 42" take two - Forno Bravo Forum: The Wood-Fired Oven Community

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  • #46
    Hey John

    Thanks again for the compliments. About the grass...when we first moved into this place it would take me three hours to mow with a push mower and that was killing me. Thankfully my bro-in-law was getting rid of a great riding lawn mower and now I get weed whacking and mowing all down in a n hour.

    Back to the oven. I scored 7' of 10" metalbestos insulated chimney flue from a friend and boy is it huge. It did not come with an anchor plate so $83 later I have one and now I had the challenge of putting such a large flue on a chimney vent that I wasn't planning on being quite so big. I did all the brick work today but I don't have any pics yet so you will just have to be patient till I get them up. My existing plan for the flue was already wide enough but not deep enough so I had to get creative with how I am making this work. I had to go from 13" deep to 18" and I did it in two courses of bricks, with the back side absorbing most of it and the front of the chimney with two layers of 1" overhang each. I figured that the back will just join into the dome once I get insulation and my outer layer of perlcrete put on so let's hope it all works out in some sort of presentable way.

    So I was in Arlington, VA last week for some training and I went to the Fire Works Pizza. It is a true wood fired pizza joint and their oven was pretty massive. When I looked at it I counted 10 pizzas in there and still room for more. It was pretty impressive. I estimated it had to be at least six to eight feet across. The result was pretty good as well. The group I was there with are coming to my place for a pizza party in the next few weeks so I hope I didn't set the bar too high by taking them to Fire Works before we eat at my place.

    Like I said, I will get pics up as soon as I can. I am excited to see how the new (for me) flue draws. Keeping my fingers crossed.

    Nate
    http://www.fornobravo.com/forum/f8/p...two-21068.html

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    • #47
      So I am trying to figure out if the perlcrete layer is waterproof. With summer almost gone and me having done almost nothing with how crazy my summer has been, I still want to insulate then put a 2.5" layer of perlcrete on. Will this make it waterproof to last through our snowy winter? I don't think I have time or the funds to do much more than that this year. Thoughts?
      http://www.fornobravo.com/forum/f8/p...two-21068.html

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      • #48
        Sorry, but is not. If nothing else, it will take a very good tarp to help you get by.
        joe watson

        "A year from now, you will wish that you had started today "

        My Build
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        • #49
          As Gulf said, neither perlcrete or vermicrete are even remotely water resistant, let alone water proof. If you have windy conditions or wet, heavy snow, you might even want to double up on the tarps. My friend in Canada wrapped up his CasaG90 for the winter and a windstorm caught an edge and blew off the entire tarp. Fortunately a neighbor noticed it and replaced the tarp before they had any rain...just saying, I'd hate to see water seep through into oven while it's under a snow pile.
          Mike Stansbury - The Traveling Loafer
          Roseburg, Oregon

          FB Forum: The Dragonfly Den build thread
          Available only if you're logged in = FB Photo Albums-Select media tab on profile
          Blog: http://thetravelingloafer.blogspot.com/

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          • #50
            What if I did a layer of concrete one the outside after the perlcrete? Would that be enough to make it water proof? Like I said I am trying to make it so that it can make it through the winter without any problems and without tarps.
            http://www.fornobravo.com/forum/f8/p...two-21068.html

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            • #51
              Unfortunately concrete by itself is not waterproof either. I do believe there are some concrete additives that really make it close to waterproof. I have also wondered about using some of the paint-on waterproof membranes that are used to build shower pans. I used a tent canopy over my oven during the build. You can lift & move it back from the chimney from the chimney if you decided to fire it up during the winter . Bottom line is that a tarp wrap will be your cheapest and most reliable method to protect your oven for just one winter.

              Looking forward to hearing what you decide to do.
              Mike Stansbury - The Traveling Loafer
              Roseburg, Oregon

              FB Forum: The Dragonfly Den build thread
              Available only if you're logged in = FB Photo Albums-Select media tab on profile
              Blog: http://thetravelingloafer.blogspot.com/

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              • #52
                There are acrylic finishes that will seal the concrete. I used Dulux Acratex and it has held up well for 2 years now. The weather here is much more temperate and we don't even get frost let alone snow. You could probably get some insurance by doing both. It will be important to make sure that the entry and chimney are weatherproof and a good tarp is probably the go there. Spring is just around the corner here and it is very pleasant indeed.
                Cheers ......... Steve

                Build Thread http://www.fornobravo.com/forum/f3/n...erg-19151.html

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                • #53
                  So it has been a few years since I have posted anything on here but today I decided to dig into my oven and tear apart the chimney. The winters have not been kind to it and it was just falling apart. So here starts the process of tearing down, cleaning up and rebuilding. This time I hope to be able to build a pergola type structure over the oven to keep the elements off it in the future. Wish me luck.
                  http://www.fornobravo.com/forum/f8/p...two-21068.html

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                  • #54
                    I started to rebuild my chimney today and my spacing was not as accurate this time as it was the first time. I hope it doesn’t bother me in the long run. I will let this sit for a few days and go for the next step after coming back from a short camping trip.
                    http://www.fornobravo.com/forum/f8/p...two-21068.html

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