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insulation on old house

  • 25-07-2013 8:25am
    #1
    chefmorgie
    Registered Users, Registered Users 2 Posts: 1 ✭


    Hi folks,
    We are renovating a house and getting quotes on insulation, there is no attic in the hse, its a low pitch roof and the ceilings are right up to the rafters, we want to pack the rafters and then insulated plasterboard skim and paint, my question is what's d best option, spray foam or fiberglass, I am worried about moisture build up or sweating as the house is old.


Comments

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


    Can't advise but it might help others to know if it's old roofing felt or modern moisture barrier under the slates/tiles as that may influence the choice of insulation.


  • #3
    catbear
    Closed Accounts Posts: 5,092 ✭✭✭catbear


    Try posting on the plumbing and heating forum: http://www.boards.ie/vbulletin/forumdisplay.php?f=1320


  • #4
    dathi
    Registered Users, Registered Users 2 Posts: 1,422 ✭✭✭dathi


    you must leave a 50mm gap between the rockwool and the felt to allow for ventilation if you are getting it spray foamed they must use special vent cards which leaves the 50mm gap


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