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Foil Tape on Between Rafter Kingspan Insulation

Discussion in 'Roofing and Guttering' started by camel307, 21 Oct 2013.

  1. camel307

    camel307

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    I have a lean to roof that runs away from the house at a pitch of circa 30 degrees.

    I have installed 100mm Kingspan between the rafters using a friction fit. I need to install 35mm Kingspan under the rafters, an 'under drawer'. I intend to fully tape every single joint on this under drawer to ensure a Vapour control Layer.

    Would anyone recommend taping up the gaps in between rafter insulation if i am fulling taping the under drawer insulation? There are minimal gaps with the between rafter insulation.

    Thanks
     
  2. freddiemercurystwin

    freddiemercurystwin

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    Just tape under the layer beneath the rafters.
     
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  4. noseall

    noseall

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    We tape both layers. Belt 'n' braces and all that.

    Very sticky stuff that foil tape, no good if you have boxing glove hands! :mrgreen:
     
  5. catlad

    catlad

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    Yes tape it to make sure it does not move when the different seasons come ie. expansion and contraction.
     
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