web analytics
Stucco direct onto vermiculite? - Forno Bravo Forum: The Wood-Fired Oven Community

Announcement

Collapse

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!

Forno Bravo
See more
See less

Stucco direct onto vermiculite?

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • Stucco direct onto vermiculite?

    Hi folks,

    I've nearly finished my build. I've done all 7 curing fires - no cracks so far thank heavens - but I did take it super slow thanks to all the advice.

    I have a 1" layer of CF blanket on top of my cast dome and another 2" layer of vermiculite on top of that and I'm ready to Stucco.

    Some questions:

    1. Can I stucco directly onto the vermiculite?
    2. How long do I need to wait between stucco coats?
    3. How long should I wait before painting?

    Thanks in advance
    My oven on a pallet build thread

  • #2
    Re: Stucco direct onto vermiculite?

    3. The paint should have a recommendation. Typically I have seen 3-7 days for water based paints and 28 days for oil based. These are minimums and will be influenced by local conditions.

    Comment


    • #3
      Re: Stucco direct onto vermiculite?

      1. I do it this way all the time.
      2. I do one cement coat around 15 mm thick, wrap the whole thing in cling wrap for a week to compensate for moisture loss into the vermiculite layer.
      3. Then fire away for about 10 fires, so it is really dry. (Any moisture left in the render layer can cause blistering of subsequent acrylic coats). Then give it a final acrylic render coat. Paint it later if you don't like the colour.
      Last edited by david s; 07-23-2014, 03:20 AM.
      Kindled with zeal and fired with passion.

      Comment


      • #4
        Re: Stucco direct onto vermiculite?

        Thanks Dave - as always :-)

        What is the "final acrylic render coat"?

        I was going to go for a 5:1:1 (sand,lime,portland) mix for the first stucco layer and then 5:2:1 for the final render layer and then paint. Would I be better off with an acrylic layer (whatever that is?)?

        Cheers
        My oven on a pallet build thread

        Comment


        • #5
          Re: Stucco direct onto vermiculite?

          Originally posted by di11on View Post
          Thanks Dave - as always :-)

          What is the "final acrylic render coat"?

          I was going to go for a 5:1:1 (sand,lime,portland) mix for the first stucco layer and then 5:2:1 for the final render layer and then paint. Would I be better off with an acrylic layer (whatever that is?)?

          Cheers
          Those recipes sound ok. each subsequent layer is meant to be weaker and contain more lime so maybe 2nd coat 6:2:1
          For the acrylic coat get something that is known as elastomeric (lots of flexibility). Don't know what is available to you, maybe try a paintable pond liner or bathroom sealer.
          Kindled with zeal and fired with passion.

          Comment


          • #6
            Re: Stucco direct onto vermiculite?

            ..not meaning to hijack thread but I've got similar questions.
            Can you elaborate more on the acrylic coat please David? Is this something thats mixed into the stucco or is it a 'paint on' product that goes onto the render.
            When you refer to bathroom sealer I think of 'tanking kits'. Theyre like a rubberised paint. My shower walls were painted with a tanking kit before tiling to ensure no moisture ingress into the plasterwork.
            @Di11on, congrats on your build, mines been a work in progress for over 2 years now(my wife slags me about it now and then) but Ive been cooking in it since last october I think. My plans have changed(improved) so much during the build that I'm very happy I didnt just build based on my original intentions. Each step has taken a lot of research and advice to get right
            R

            Comment


            • #7
              Re: Stucco direct onto vermiculite?

              [QUOTE=RichC;177227]..not meaning to hijack thread but I've got similar questions.
              Can you elaborate more on the acrylic coat please David? Is this something thats mixed into the stucco or is it a 'paint on' product that goes onto the render.
              There are probably lots of ways to do it. You could add something to make the final stucco layer waterproof, use an acrylic render/stucco layer or as I do a cement render/stucco layer with an acrylic waterproof layer painted over it. I use an elastomeric acrylic which is just a fancy mane for an acrylic that's really flexible. Hence my reference to bathroom sealers that go under the tiling.
              Kindled with zeal and fired with passion.

              Comment

              Working...
              X