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Insulated plasterboard on an internal sloping ceiiing

Discussion in 'Roofing and Guttering' started by RichTraff, 12 Dec 2013.

  1. RichTraff

    RichTraff

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    I'm insulating, plaster-boarding and skimming the sloping roof ceilings in my bedrooms. It's only a small area where its sloping but I'd still like to hav insulations.

    I am aware of the 50mm air-gap recommend in the joist to allow for proper ventilation.

    My dads plan is cut kingspan or their equivilant and slot the inbetween the rafters. Allowing a 25mm air gap and then boardboard plasterboard over the top.

    Personally i think it's risk, and believe its easier (if not more expensive) to buy special insulated kingspan plasterboard and scew it straight to the rafter. :eek:
     
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  3. catlad

    catlad

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    I would do it your way.
     
  4. tony1851

    tony1851

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    Alastairreid

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    freddiemercurystwin

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  8. tony1851

    tony1851

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    +1851
     
  9. noseall

    noseall

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    +4's look daft on golfers.
     
  10. RichTraff

    RichTraff

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    Eh?

    So insulted plasterboard straight to the rafters.

    How about this though....

    Screw 50mm kingspan onto the rafters, then screwed plasterboard over the top?

    The materials would be cheaper this way.
     
  11. noseall

    noseall

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    Equally as good a method if not better. We often do it this way and means that you don't have to cut the insulation boards (joints) onto any rafters, which in turn means less waste.
     
  12. RichTraff

    RichTraff

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    Excellent.

    That is what I'll do.

    Thanks for the replies.
     
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