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Insulating tight corner of attic.

  • 05-11-2014 10:16pm
    #1
    Kettleson
    Closed Accounts Posts: 2,047 ✭✭✭


    Hi all,

    Any ideas as to the best way to insulate a tight corner of an attic?

    Its a single brick construction, so the wall is thin, and at the extreme corner of the attic, the only "non-insulation" is the thin plaster board above a room which is next to the eaves.

    So in effect that has created a cold corner in the room that attracts moisture and mould.

    I didn't want to put fibreglass insulating down as that would block the airflow under the eaves. And its a tight tight corner, even very hard to access because of the pitched rafters.

    Any suggestions? Is there a spray insulation that can be sprayed on top of the plaster board? Or would it be ok to stuff it with fibre insulation and have just the eaves in this part of the attic blocked for airflow?

    Thanks for any ideas.


Comments

  • #2
    slimjimmc
    Registered Users, Registered Users 2 Posts: 7,786 ✭✭✭slimjimmc


    You can get rafter ventilators which maintain a gap under the felt and allow you insulate into the eaves without blocking airflow.
    See this old thread http://www.boards.ie/vbulletin/showthread.php?p=87230482


  • #3
    Kettleson
    Closed Accounts Posts: 2,047 ✭✭✭Kettleson


    Excellent, thanks Jim.


  • #4
    Calibos
    Registered Users, Registered Users 2 Posts: 7,826 ✭✭✭Calibos


    You need eaves ventilation but it doesn't have to be 100% of the perimeter of the attic. You can put loft roll in the corners without ventilation. I'll be insulating an attic over our business premises soon. The semi vaulted ceiling and rafter layout at the corners makes ventilating difficult but I realised that as long as its just the corners that are insulated without ventilation from the eaves then theres no problem. So I'll be simply pushing the insulation rolls into my corners and not worrying about ventilation there because the bulk of the perimeter will be ventilated.


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