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What do you have for Insulation

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  • #16
    Re: What do you have for Insulation

    Ok the distributor just called back the price of that board to put 4" down will cost me around $700 haha. He has another product that he recommends that will cost me $168.

    FOAMGLAS:

    FOAMGLAS? Boards :: Product overview :: Products :: Building :: FOAMGLAS?, ecological cellular glass thermal insulation systems for durable solutions in building, HVAC installations and industry, produced by Pittsburgh Corning.

    will this work? Detailed info link at the bottom has all specs.
    Link to my oven build on YouTube:

    http://www.youtube.com/watch?v=Ujb7lqVcSzQ

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    • #17
      Re: What do you have for Insulation

      I have seen it used, but it is right on the edge temperature wise. Should be fine for underneath on a normal use oven.

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      • #18
        Re: What do you have for Insulation

        Originally posted by Tscarborough View Post
        I have seen it used, but it is right on the edge temperature wise. Should be fine for underneath on a normal use oven.
        On the edge temp wise? It's rated for over 1800 degrees. Others are stating that they use 1200 degree board? Am I misreading something? I definitely don't want to use something that's on the edge of failure.

        Thanks
        Link to my oven build on YouTube:

        http://www.youtube.com/watch?v=Ujb7lqVcSzQ

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        • #19
          Re: What do you have for Insulation

          Hard to get your oven floor much over 900, and even then it is not going to stay there unless you are using a bellows or something.

          I recommend McGill's Warehouse for CF goods. Same stuff as our hosts at half the cost, and they are a mail order house. V-wiz' source sounds good too if they are willing to pack stuff up for mailing.

          If you are looking for advice, I'd recommend going with a tested material shipped to you (e.g. CF board) vs. sourcing something unknown locally.
          My build progress
          My WFO Journal on Facebook
          My dome spreadsheet calculator

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          • #20
            Re: What do you have for Insulation

            It is rated for 900 degrees which is hard but not impossible to do on a multiple day firing. Note that that is not the working rating, it is the point at which it begins to fail.

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            • #21
              Re: What do you have for Insulation

              hmmmm. Ok. This is what deejayoh has recommended:

              McGills Warehouse Online Department Store,HF102 2IN Ceramic Fiber Boards Density 17.5lb ft3 or 280kg/m3 D1A F10DF

              Should I put 4" of this down or is 2" ok?
              Last edited by K79; 03-05-2013, 01:07 PM.
              Link to my oven build on YouTube:

              http://www.youtube.com/watch?v=Ujb7lqVcSzQ

              Comment


              • #22
                Re: What do you have for Insulation

                Why not just use 50 bucks worth of perlcrete?

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                • #23
                  Re: What do you have for Insulation

                  Originally posted by Tscarborough View Post
                  Why not just use 50 bucks worth of perlcrete?
                  Oh man talk about getting overwhelmed haha. Is this the method the FB plans talk about? Doing a 3 1/2" slab with a 4" perlcrete layer? Do you put an island of firebrick in that? Also would this material be suitable to fasten the metal studs to for the enclosure?
                  Last edited by K79; 03-05-2013, 01:32 PM.
                  Link to my oven build on YouTube:

                  http://www.youtube.com/watch?v=Ujb7lqVcSzQ

                  Comment


                  • #24
                    Re: What do you have for Insulation

                    K79,

                    You only need perlcrete under the fire brick hearth/dome, you can fasten the metal studs to your concrete slab. I did use a combination of FoamGlas and CaSi. 2" FoamGlas on concrete slab with 1 1/2" CaSi on top of CaSi. Which ran be about $200. But like Tscar say, you can save your self some money with Vcrete or Perlcrete but the key is to make sure you don't underinsulate under your oven.
                    Russell
                    Google Photo Album [https://photos.google.com/share/AF1Q...JneXVXc3hVNHd3/]

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                    • #25
                      Re: What do you have for Insulation

                      Originally posted by UtahBeehiver View Post
                      K79,

                      You only need perlcrete under the fire brick hearth/dome, you can fasten the metal studs to your concrete slab. I did use a combination of FoamGlas and CaSi. 2" FoamGlas on concrete slab with 1 1/2" CaSi on top of CaSi. Which ran be about $200. But like Tscar say, you can save your self some money with Vcrete or Perlcrete but the key is to make sure you don't underinsulate under your oven.
                      What do you mean 1 1/2" CaSi on top of CaSi? Did you mean on top of the FoamGlas?
                      Link to my oven build on YouTube:

                      http://www.youtube.com/watch?v=Ujb7lqVcSzQ

                      Comment


                      • #26
                        Re: What do you have for Insulation

                        fat fingers CaSi on top of FoamGlas
                        Russell
                        Google Photo Album [https://photos.google.com/share/AF1Q...JneXVXc3hVNHd3/]

                        Comment


                        • #27
                          Re: What do you have for Insulation

                          Originally posted by deejayoh View Post
                          Hard to get your oven floor much over 900, and even then it is not going to stay there unless you are using a bellows or something.

                          I recommend McGill's Warehouse for CF goods. Same stuff as our hosts at half the cost, and they are a mail order house. V-wiz' source sounds good too if they are willing to pack stuff up for mailing.

                          If you are looking for advice, I'd recommend going with a tested material shipped to you (e.g. CF board) vs. sourcing something unknown locally.

                          McGills is good for the blanket, but the insulation board was a bit expensive. Pacific insulation is pretty good, ive been there twice, the guys was really helpful as we walked back into the warehouse and hand picked some of the boards. They are a large company so i don't see why they wont ship?
                          Matthew 19:26. With God all things are possible.

                          My Build: http://www.fornobravo.com/forum/f21/...les-18741.html

                          Comment


                          • #28
                            Re: What do you have for Insulation

                            Originally posted by K79 View Post
                            hmmmm. Ok. This is what deejayoh has recommended:

                            McGills Warehouse Online Department Store,HF102 2IN Ceramic Fiber Boards Density 17.5lb ft3 or 280kg/m3 D1A F10DF

                            Should I put 4" of this down or is 2" ok?
                            The price has gone down, it used to be $115 for the boards.
                            Matthew 19:26. With God all things are possible.

                            My Build: http://www.fornobravo.com/forum/f21/...les-18741.html

                            Comment


                            • #29
                              Re: What do you have for Insulation

                              What is the max temp the perlcrete can get to before it starts to fail. I called up FOAMGLAS and they told me that 900 deg F is the max temp with was stated above. Around 1100 deg F the board will start to crack and around 1300 deg F the board will slump and fail.
                              Link to my oven build on YouTube:

                              http://www.youtube.com/watch?v=Ujb7lqVcSzQ

                              Comment


                              • #30
                                Re: What do you have for Insulation

                                Originally posted by K79 View Post
                                What is the max temp the perlcrete can get to before it starts to fail. I called up FOAMGLAS and they told me that 900 deg F is the max temp with was stated above. Around 1100 deg F the board will start to crack and around 1300 deg F the board will slump and fail.
                                Perlcrete will hold up but is not the best insulator directly against the Firebrick so I would recommend 1" - 2" of ceramic board next to the Firebrick

                                Foamglas is very brittle and hard to lay firebrick directly on so a layer of 1-2 inches of creamic board would be recommended next to the Floor brick.

                                That is how the oven I am assisting with right now is being built.

                                Floor Brick
                                1" - 2" Ceramic Board
                                4" Foamglas

                                Stacked as above

                                My oven is

                                Floor Brick
                                2" ceramic FB Board
                                2.5" 7/1 Vermicrete

                                I wish I had more insulation under the floor.....

                                Chip
                                Last edited by mrchipster; 03-06-2013, 10:01 AM.
                                Chip

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