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Roof truss insulation

  • 23-01-2011 3:36pm
    #1
    pavb2
    Registered Users Posts: 2,998 ✭✭✭


    Hi all I have an old house 100 years + insulation fine everywhere but I,m trying to improve insulation. What is the best method of insulating under roof trusses in attic,standard pitch roof.

    Thanks for any help

    Pavb2


Comments

  • #2
    gsxr1
    Closed Accounts Posts: 3,167 ✭✭✭gsxr1


    pavb2 wrote: »
    Hi all I have an old house 100 years + insulation fine everywhere but I,m trying to improve insulation. What is the best method of insulating under roof trusses in attic,standard pitch roof.

    Thanks for any help

    Pavb2

    If it is a cold attic there is no point . Beef up existing ceiling attic insulation to 300mm


  • #3
    paddy147
    Banned (with Prison Access) Posts: 15,858 ✭✭✭✭paddy147


    gsxr1 wrote: »
    If it is a cold attic there is no point . Beef up existing ceiling attic insulation to 300mm


    +1 to what he said.:)


  • #4
    pavb2
    Registered Users Posts: 2,998 ✭✭✭pavb2


    Thanks for response it's just that attic is completely boarded out so I thought insulation panels between roof trusses would be easier but if it makes no difference then maybe I've just got to lift them (and move all the cr*p out) and increase existing to 300mm.

    Thanks again


  • #5
    paddy147
    Banned (with Prison Access) Posts: 15,858 ✭✭✭✭paddy147


    pavb2 wrote: »
    Thanks for response it's just that attic is completely boarded out so I thought insulation panels between roof trusses would be easier but if it makes no difference then maybe I've just got to lift them (and move all the cr*p out) and increase existing to 300mm.

    Thanks again


    Kingspan 100mm thick insulated loft/walk boards.

    Problem solved.:)


  • #6
    Jimbo
    Closed Accounts Posts: 2,379 ✭✭✭Jimbo


    paddy147 wrote: »
    Kingspan 100mm thick insulated loft/walk boards.

    Problem solved.:)

    They are a good job but make sure there is sufficient insulation between the joists otherwise you'll get thermal looping which greatly reduces their effectiveness


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  • #7
    pavb2
    Registered Users Posts: 2,998 ✭✭✭pavb2


    Have put 150mm insulation under loft boards, original 150 insulation had deteriorated, doesn't seem much warmer.

    Measured lowest room temp before was about 11 degrees new minimum temp is around 12- 13 I thought it would be a bit warmer.

    Highest before was about 17 degrees now about 20

    What room temps should I hope to get?

    So is this adequate or should I go with loft boards as well or lay another 150mm insulation on top of boards


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