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Waterproof paint for ovens? - Forno Bravo Forum: The Wood-Fired Oven Community

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  • Waterproof paint for ovens?

    Hi, I finished building my oven and it's in my backyard, I would like to know if it is OK to paint the oven with waterproof paint, is this paint enough protection for the oven during the rainy season?

    Thank you!

  • #2
    Re: Waterproof paint for ovens?

    ramiro,

    Latex sticks pretty good to concrete but a better route is to use an acrylic stucco. You do have it insulated, correct?

    Les...
    Check out my pictures here:
    http://www.fornobravo.com/forum/f8/les-build-4207.html

    If at first you don't succeed... Skydiving isn't for you.

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    • #3
      Re: Waterproof paint for ovens?

      Hi Less, I made my oven with the traditional way that people here in Colombia make the wood fired ovens, a mixture of mud and straw, I didn't insulate it, so when I fire the oven I can feel the heat on the outer walls of the oven, it doesn't get very hot, it feels warm. I finished the oven covering it with thin firebricks (those that are used for the oven floor).

      Here there's a waterproof paint used for buildings, but some of them are flamable, so I still don't know what to do....

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      • #4
        Re: Waterproof paint for ovens?

        Originally posted by Ramiro View Post

        Here there's a waterproof paint used for buildings, but some of them are flamable, so I still don't know what to do....
        Is it flammable after it dries? I wouldn't go with either of my previous suggestions as "warm" is a relative term. I'm stumped - anyone else have an idea other than insulate?

        Les...
        Check out my pictures here:
        http://www.fornobravo.com/forum/f8/les-build-4207.html

        If at first you don't succeed... Skydiving isn't for you.

        Comment


        • #5
          Re: Waterproof paint for ovens?

          Since you built your oven like the locals do, "in the traditional way" what is the traditional way to waterproof a WFO made of mud and straw in Columbia?

          I'm not trying to be smart, just what you are describing is something akin to what I know as a "cob oven" and I have never seen a cob oven that is painted as a means of waterproofing. The two cob ovens I have experience with are usually under cover of a tarp (with lots of venting so the tarp doesn't trap moisture) when not in use. I have seen photos of them built under a protective roof type structure as well.

          It will be interesting to see what you end up doing. Please keep us posted.

          Bests,
          Wiley

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          • #6
            Re: Waterproof paint for ovens?

            Acrylic stucco is one way to go. Remember that you will get a lot of expansion / contraction during a use cycle.

            This is "water resistant" and will be OK for minor rainfall. In the rainy season, or for prolonged period of non use, I cover mine with a sheet of plastic.

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            • #7
              Re: Waterproof paint for ovens?

              Originally posted by Neil2 View Post
              Acrylic stucco is one way to go.
              I'm not sure it will handle the heat - this is an uninsulated oven. I checked the spec of the Dryvit I used. All they say is that they passed the ASTM E 84 test. I don't have access to that spec so no clue how hot it got.
              Check out my pictures here:
              http://www.fornobravo.com/forum/f8/les-build-4207.html

              If at first you don't succeed... Skydiving isn't for you.

              Comment

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