#1  
Old 07-09-2010, 09:17 AM
Apprentice
 
Join Date: Oct 2009
Location: Seattle, WA
Posts: 121
Default Laying insulation blanket over dome

I'm hoping to get my insulation blanket put over the dome this weekend. Any advice for the best technique to use for the layout? I figure the gang here has some tricks for laying a flat blanket over a dome.

I have 2 x 1" x 50 sq ft (24" wide) of blanket to use and am hoping to end up with 3-4" on top and 2" on the sides.

I was thinking of starting with a horizontal piece across the top and then wrapping a vertical piece around the whole base with some cuts in the top half to overlap sections. And then repeat those 2 layers again.

Thanks for any ideas.
__________________
Pizza Oven Picture Gallery

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Reply With Quote
  #2  
Old 07-09-2010, 10:02 AM
Laborer
 
Join Date: May 2010
Location: Fairburn, GA
Posts: 53
Default Re: Laying insulation blanket over dome

That will work. It is actually easier to work with than it may seem--it sort of sticks to itself. But be sure to cover yourself completely! I forgot to button one side of my long sleeve shirt and part of my wrist above my glove was exposed--ouch!

I did something similar to what you are planning and found it easier for me to add the sides first, because the top pieces helped to keep the sides in place. Since you are planning to have more on the top, maybe just cut a rectangle that you can fold into a square and set on the top, add 1 layer around the dome on the sides, then drape two more long rectangles over it in an tight X pattern that will give you 2 more layers on top (totaling 4 inches on top) and will cover the sides with only 2 inches. You can just cut slits in the blanket when doing the sides where it naturally wants to fold and overlap it there.

I didn't pick up metal ties or anything and was worried that it might be needed, but it turned out not to be a problem at all. I did wrap it in chicken wire afterward and that was relatively easy as well--just really hot because you have to be so covered up. You will probably want someone there to help out with the chicken wire because you will want someone there to hang on to one end of it while you pull the other end really tightly around. But you could always rig up something that would serve that purpose as well.

Good luck!
Reply With Quote
  #3  
Old 07-09-2010, 10:24 AM
Master Builder
 
Join Date: Jul 2009
Location: Los Angeles
Posts: 942
Default Re: Laying insulation blanket over dome

They're surprising easy to work with and form reasonably well to the shape of the dome. I did 3 layers around the perimeter of the dome first, using the entire 24" width of the blankets, slitting each layer half way up the dome and so on. Then I tossed something like 5 layers on top, some cut to shape. I then chicken wired the whole thing.

George
__________________
George


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


Weber 22-OTG / Ugly Drum Smoker / 34" WFO
Reply With Quote
  #4  
Old 07-09-2010, 12:46 PM
Apprentice
 
Join Date: Oct 2009
Location: Seattle, WA
Posts: 121
Default Re: Laying insulation blanket over dome

Thanks @czaunb2 and @fxpose - that info definitely helps. I had planned on wearing a mask, but good to know about the arm coverings and gloves too.

I also have some stucco lathe to go over the top. Was thinking that some tapcon screws around the bottom and zip ties above would be great to help hold that together until I get the stucco over it. The zip ties might melt afterwards if the outside of the insulation gets too hot but I don't think that should be too much of an issue once the stucco covering is on it.

Appreciate the feedback!
__________________
Pizza Oven Picture Gallery

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Reply With Quote
  #5  
Old 07-09-2010, 01:29 PM
dmun's Avatar
Moderator
 
Join Date: Jul 2005
Location: New Jersey USA
Posts: 4,216
Default Re: Laying insulation blanket over dome

Quote:
The zip ties might melt
If you're worried about that, strip out some scrap 14 gauge copper electrical wire and use it like twist ties. The stuff is more flexible if you bring it to red heat with a propane torch before you begin.
__________________
My geodesic oven project:
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
,
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Reply With Quote
  #6  
Old 07-18-2010, 10:25 PM
Apprentice
 
Join Date: Oct 2009
Location: Seattle, WA
Posts: 121
Default Re: Laying insulation blanket over dome

Thanks for the tip about the wire @dmun. I had some left over copper wire from a stitch and glue kayak I made a number of years ago and that worked great. I did also use some zip ties and am hoping they will be fine on the exterior of the insulation.

The blanket was quite easy to work with - was heavy enough to just lay down over the oven, and cut easily with a pair of scissors. The superwool was not too itchy either (though I still wore a mask, gloves, and long sleeves).

Two 50 square foot rolls seemed like plenty as I easily got 2" around sides and vent and 4-5" over the top. Guess I will know for sure when I get it fired up and see how well it holds heat.

Thanks for the help.
__________________
Pizza Oven Picture Gallery

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Reply With Quote
  #7  
Old 07-27-2010, 07:11 AM
dhs dhs is offline
Peasant
 
Join Date: Oct 2008
Location: Bklyn NY
Posts: 45
Default Re: Laying insulation blanket over dome

If you are not doing a stucco exterior, is the chicken wire still recommended? thanks, David
Reply With Quote
  #8  
Old 07-27-2010, 08:19 AM
Apprentice
 
Join Date: Oct 2009
Location: Seattle, WA
Posts: 121
Default Re: Laying insulation blanket over dome

@dhs - sounds like you are going to do a house enclosure around the oven? If so I would think that it still makes sense to put some wires around the outside to make sure the insulation does not slide off the dome or settle over time. I would put a few screws into the base and then run a wire vertically up and over the intersection of the dome and vent, then a few wires from that wire around the outside. You might be fine without them, but should only take an hour or two and ensure it doesn't move around.
__________________
Pizza Oven Picture Gallery

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Can i use just blanket for dome insulation. 3G_ Pompeii Oven Construction 5 08-30-2011 11:15 AM
Pearlite/Vermiculite Dome Insulation questions EricU Newbie Forum 13 06-03-2010 08:57 PM
Need advice on what is the best method when installing the insulation blanket please? Wheels1974 Tools, Tips and Techniques 13 01-28-2010 06:28 PM
Igloo style dome insulation Throw Deep Pompeii Oven Construction 19 12-18-2009 02:40 PM
Blanket Insulation altamont Pompeii Oven Construction 12 10-01-2009 08:09 AM


All times are GMT -7. The time now is 10:20 PM.

Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
2006/10 Forno Bravo, LLC