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Cutting roll of insulation to fit dome

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  • Cutting roll of insulation to fit dome

    The insulation roll is 24 inches wide. How to cut it for
    good coverage and minimum waste? I have not solved
    the question of how to make triangles fit? Just slap dash
    draping and overlapping seems crude and wasteful. Any
    ideas will be appreciated. I could not find much information
    searching threads and photos. Thanks. Careme in NC

  • #2
    Re: Cutting roll of insulation to fit dome

    C,

    You may want to post your question under the construction thread, will see more response there. Here is a pic of my CF and where I cut (V's for the curvature and Squares where the blanket seams are butted together). My CF was 48" wide and I cut 32" x 48" squares and installed horizontal. I took alot of care in cutting and fitting since I am doing an igloo and wanted to maintain the dome shape. If you do an enclosure then the fitting is not quite a critical. Can't emphasize enough to insulate, insulate, insulate.
    Russell
    Google Photo Album [https://photos.google.com/share/AF1Q...JneXVXc3hVNHd3/]

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    • #3
      Re: Cutting roll of insulation to fit dome

      I found cutting equilateral triangle the best method, just lay them head to toe.
      The English language was invented by people who couldnt spell.

      My Build.

      Books.

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      • #4
        Re: Cutting roll of insulation to fit dome

        I cut about 4 or 5 triangles for my first oven, which went from the base to the top, but found I had to belly the sides out in a curve so they would fit the curve of the dome. Straight triangles give you gaps between them when bent around the sphere.
        Kindled with zeal and fired with passion.

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        • #5
          Re: Cutting roll of insulation to fit dome

          I draped the blanket over/around the dome, then cut the wrinkles with a scissors-style hedge clipper - make a single cut and overlap the edges, or two cuts, remove the wedge, and butt the edges. Overlap the seams on successive layers.

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