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Do I need an airspace ?

jamar hammer | Posted in Energy, Heating & Insulation on August 19, 2006 10:51am

Hey there BTer’s

What I have is a garage with a gambrel roof and what I was wandering is if I were to insulate the walls/lower portion of the roof, do I need an arispace even though it is the second floor and there is lots of ventilation.The soffit is solid so there is no air flow from below.As I said its just the loft of the garage and not going to be used for living space
Thanks all

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  1. RayMoore2G | Aug 20, 2006 02:22am | #1

    If I understand your question then my answer would be no. Do you have a moisture source in the space below?

    1. jamar hammer | Aug 21, 2006 03:27am | #2

      Hey there RayI guess I should explain a little better as before I was in a hurry.The garage is constructed of 8" block and the rafters are home made trusses of 2x4's. I have a bunch of r-12 kicking around here and I want to use it up so its not in the way.I was hoping not to need an airspace.The lower section of the gambrel roof is on a 70 degree and the upper is a 20 degree.Just wandering if the life of the shingles will be affected.As for moisture, I just poured an new floor last year and I used 6mil poly under the concrete.The shingles are new as that was my summer project.Like I said ,or asked do you think there should be an airspace or keep the r-12 in likewise as an exterior wall.Also I live here in southern Ontario where the climate changes like the wind Thanks for your advice and any more would be nice;;;;Gee maybe I should have been a poet,,,lol
      The Jamar Hammer

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