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Render In Australia - Forno Bravo Forum: The Wood-Fired Oven Community

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I'm Peter Reinhart! Ask Me Anything! Monday, February 15, 2016 7:00-8:00 pm EST

To kick off our AMA feature, we have invited author, chef and master bread maker and host of Pizza Quest, Peter Reinhart, to be our first host! Peter will be in the Forum on Monday, February 15th, from 7:00 - 8:00 pm EST. If you are unable to be online during the live session, you can post your questions in the sticky post. Peter will answer those questions during the live session on February 15th. You can view Peter's answers to your questions as well as what happened during the live session in the session thread.

Ask Me Anything New Forum Feature

You will notice a new forum at the top of the main page called, "Ask Me Anything". This forum will be used for live one hour "Ask Me Anything" (AMA) sessions hosted by people who are knowledgeable in different areas pertaining to wood fired ovens. How it works:
- Each AMA will have a "sticky" thread where the community can post questions they would like answered during the live session. This will allow everyone to participate even if you can't be online for the live session. These questions will not be answered by the host until the live AMA; if you need an answer quickly, you should post it in the appropriate Forum area for the community to respond.
- Another thread will be posted for the live AMA. Registered users who are logged in during the live session can interact with the host by asking questions and receiving responses.
- The live thread will remain in the AMA forum to view after the session.

We hope you enjoy this new feature! Please let us know if there is a topic that you'd like to have as an AMA and we'll look for a host!

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Render In Australia

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  • Render In Australia

    Hey guys, Im sure this has probably been covered before, but Im ready to render my oven, and was curious as to what other builders in Australia/melbourne have used?
    I have read the basic mix of sand lime and cement, and will probably go that option, but after that, for weather proofing, I would be interested to hear what anyone has to say?
    Much thanks,
    Nic

  • #2
    Re: Render In Australia

    Hi Nic.
    I just rendered the concrete cap on mine then painted it with acrylic paint, so far so good, but then again we havent had any real rain as yet..
    The English language was invented by people who couldnt spell.

    My Build.

    Books.

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    • #3
      Re: Render In Australia

      Hi Guys,

      Up to the render myself, how did you guys fair??, I have acouple of bags of premixed render from the building suplies, and was going to add some water proof of some sort and color. sound any good?

      Thanks Brett...

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      • #4
        Re: Render In Australia

        I think you are better off not adding a waterproofing agent to the render, because you want to allow moisture inside the oven get out. Don't be in a rush, fire it 10 times then add your waterproofing. Commercial renders don't have too much lime in them and it's lime that gives the render some elasticity, so if you are using a commercial cement render add additional lime.
        Kindled with zeal and fired with passion.

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        • #5
          Re: Render In Australia

          Thanks David S,

          Some good advice on the water proofing and lime additive to the render, I'll take that on board for sure.
          I have the drying under control though, as I had finished the dome some time ago and had cover'd it with vermiculite..but came up just abit short of where I was happy with it, So had to wait until my next trip to Melbourne to purchase some more. I have even try'd my 1st pizza's last weekend (great taste) So on to the render this weekend and alls finished.

          Regards...

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          • #6
            Re: Render In Australia

            Wrap the whole thing in cling wrap after you've rendered, then leave it for a week, so the shell has a chance to harden.
            Kindled with zeal and fired with passion.

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            • #7
              Re: Render In Australia

              I rendered mine about after a month of cooking, I wanted to make sure the vermic layer was dry,,, I also added color and acrylic fortifier, about 3 months now and good so far

              Mark

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              • #8
                Re: Render In Australia

                I used a mix of 1 part off white cement 4 parts rendering sand 1/2 cup of oxide and used Silasec as a waterproof agent. It seems to have worked fine but I still like to cover it to stop the birds crapping on it. The trick is to try not to attachh the render to the vent arch on the edges. By that I mean you need to let the arch expand without taking the render with it so you need to bring the render to the back of the arch only. That way as the arch expands it will crack along the joint of the render not try to split the render across the dome in order to expand. I hope that is clear enough.

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                • #9
                  Re: Render In Australia

                  Hi Rodneyf,

                  Yeah thanks that was clear enough however I had all ready covered some of the arch with the blanket and vermiculite..so I was commited to rendering part of dome arch join, Hopefully there is enough room for expansion with the blanket & vermic so's not to crack the render?? anyway I'll soon see.

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                  • #10
                    Re: Render In Australia

                    I hope it all works out for you. What mix did you end up using for your render?

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                    • #11
                      Re: Render In Australia

                      I used 3 20kg bags of a Bunnings generic pre mixed render and added color and about 1kg of extra lime per bag as advised..well I decided on the amount of extra lime everything is looking good at the moment, just not liking this week of drying period.

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                      • #12
                        Re: Render In Australia

                        Rodney F.
                        I used a mix of 1 part off white cement 4 parts rendering sand 1/2 cup of oxide
                        What is Oxide for ? and what does it do ?

                        Thanks Mark

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                        • #13
                          Re: Render In Australia

                          Hey Mark,

                          Oxide is the powdered color you can add to cement or render,Not sure what you guys in the States call it?

                          Regards.

                          Brett

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                          • #14
                            Re: Render In Australia

                            Rodney,
                            If you insulate between the outer brick arch and the hearth/dome, then the arch doesn't get hot and resultant expansion cracks don't occur. Probably a bit late to change it now. Try some flexible acrylic over where the cracking has occured.
                            Kindled with zeal and fired with passion.

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                            • #15
                              Re: Render In Australia

                              David,
                              My render only comes as far as the back of the front arch not like Marks that comes right over the front arch. I don't have any cracking problems so far and I have had some decent fires going.

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