Insulating a roof?

Discussion in 'Community Discussion' started by silbeej, May 16, 2008.

  1. silbeej macrumors 6502a

    Feb 3, 2007
    What would one's best way of insulating a 2x4 roof truss. It is in a shed, and there is a ridge vent only. As it stands, i am going to cut strips of 1 inch foam board to fit between to allow for an air gap. Any suggestions on a better way?
  2. Rodimus Prime macrumors G4

    Rodimus Prime

    Oct 9, 2006
    just go to the hardware store and by of the pink stuff.
  3. Sun Baked macrumors G5

    Sun Baked

    May 19, 2002
    If the interior of the framing is set up for drywall you can alway install the thicker rigid foam with long nails and large washers on the inside face of the studs like you would drywall.

    Otherwise the gaps with the rigid foam inside the stud cavities will cause you more insulation problems than sticking with thinner fiberglass bat.

    Unless you want to spend the time and go back and foam seal around all the gaps in the rigid foam. Rigid foam works better as a continuous barrier.
  4. Gray-Wolf macrumors 68030


    Apr 19, 2008
    Pandora, Home Tree
    A couple questions. Do you use the attic for storage, or use as a bonus room? If neither, I would use a R-15 or better pink insulation, attaching the tabs to the would with staples. The point of insulating, is to create a barrier to keep the heat/cold out. The pink is the best bet. An alternative, is a plastic piece they make that creates a void between the attic and the roof, so that the heat rises wot he top, and out the vents. It helps prevent condensation in the attic.
    A builders supply place should have what ever you need. Home Depot, Lowes, ect.

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