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  #161  
Old 10-17-2013, 09:41 PM
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Default Re: 42" build in Central Texas

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Originally Posted by GarnerAC View Post
Back from Amsterdam,,,,, and no I wasnt there for the Hookers and Pot! I saw them but didnt partake lol!
Insulated the Dome today. 2-4" of Ceramic Blanket and another 2-4" of fiberglass roll insulation that I had laying around my shop. Any reason not to do the Fiberglass???? I do plan on filling the enclosure with Perlite

Attachment 39584

Attachment 39585

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Gudday
I have " domestic insulation" over 2 in of ceramic insulation. The 2 in of ceramic more than drops the heat before it gets to that layer . You should be good to go with 3 ins. Forget the pearlite cement layer now and drying should be easy.
For anyone reading this rockwool fiberglass domestic insulation can not be used as the primary insulation in an oven . But as a secondary it works but it must have a high temp insulation layer to protect it
Regards dave
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  #162  
Old 10-18-2013, 03:20 AM
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Default Re: 42" build in Central Texas

Dave, rockwool (mineral wool) is different than fiberglass and works great. It is made from basalt, a very hard igneous stone and mineral wool can withstand temperatures exceeding 2000*.
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  #163  
Old 10-18-2013, 03:43 AM
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Default Re: 42" build in Central Texas

I dont plan on this getting wet other than humidity from normal Texas days. The enclosure will be sealed up so where would any moisture go anyway?? Am I supposed to vent the enclosure?
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  #164  
Old 10-18-2013, 04:42 AM
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Default Re: 42" build in Central Texas

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Dave, rockwool (mineral wool) is different than fiberglass and works great. It is made from basalt, a very hard igneous stone and mineral wool can withstand temperatures exceeding 2000*.
Gudday stonecutter
Yes I know (now) what rockwool is but what I have is fiberglass insulation sold under the name of rockwool . Different parts of the world do have differing names
At first , of course I was worried, but I cut a section out of the oven dome and took some temp readings.
It was cool enough for the Fiberglass.
If you go to the " introductions" section "Hi new Aussie" you will find my investigations. They really show have effective ceramic insulation is.
For my money I would now use "rockwool" insulation it's local available and cheaper than ceramic .
I would also rate it above pearlite/cement in ease to use and not introducing more water to dry out of your build.
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  #165  
Old 10-18-2013, 07:42 AM
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Default Re: 42" build in Central Texas

Garner..dry out the oven before enclosing..no vent needed.

Dave..I use mineral wool for all my builds except one. Very pleased with it. Strange they call fiberglass insulation rockwool, since only mineral wool is the one made from basalt.
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  #166  
Old 10-22-2013, 10:10 AM
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Default Re: 42" build in Central Texas

Just an update as to where Im at.....
Nothing to see here,,, move along

42" build in Central Texas-20130806_131548.jpg
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  #167  
Old 10-22-2013, 10:15 AM
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Default Re: 42" build in Central Texas

Looking good. You've made really quick progress on that oven.

Are you going to have an overhang on the roof? Useful for lighting in the eaves, IMHO.
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  #168  
Old 10-22-2013, 10:24 AM
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Default Re: 42" build in Central Texas

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Looking good. You've made really quick progress on that oven.

Are you going to have an overhang on the roof? Useful for lighting in the eaves, IMHO.
Yes, 8" overhang front and rear. Going to have 4 LED recess lights within soffet. Trying to figure out where to put switch. I may have this puppy finished by Christmas!
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  #169  
Old 10-22-2013, 10:33 AM
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Default Re: 42" build in Central Texas

You might want to allow for more room in the front for the lights. They're typically 5" or so for the housing even if you use the small down lights. With trim and fascia and so forth, at 8" you will run out of space pretty quickly. Plus the lights will be right next to the front of your oven housing, so you will end up with wall washers, not task lighting.

I went with a much deeper eave @ 18" because we get so much rain here - but I'd say 12" is minimum. I also used some lights that I could aim/rotate - which is a nice feature.

for reference, here's a picture of the lights installed in mine
42" build in Central Texas-2013-10-22-10.29.12.jpg
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  #170  
Old 10-22-2013, 10:35 AM
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Default Re: 42" build in Central Texas

I built the front eave long as well, both to keep water out of the oven and the wood storage area.
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