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Cavity Wall Insulation - Quick Question

  • 30-06-2009 8:29pm
    #1
    s2sap
    Registered Users, Registered Users 2 Posts: 19 ✭


    Hi Guys,

    We have bought a 9 year old house with yellow fibre glass insulation in the wall cavities. I spoke to a local insulation company about blown bead insulation being put in but they just said it cant be done as the fibre glass would stop the cavity filling with the polystyrine beads.

    Anybody know of any way to enhance the insulation in the walls under the circumstances.

    Simon


Comments

  • #2
    muffler
    Registered Users, Registered Users 2 Posts: 46,545 ✭✭✭✭muffler


    Im afraid you're stuck as far as the cavity is concerned. have you considered insulating internally or externally?


  • #3
    s2sap
    Registered Users, Registered Users 2 Posts: 19 ✭s2sap


    Have insulated loft to max. What do you mean internally / externally. Do you mean the walls ?


  • #4
    muffler
    Registered Users, Registered Users 2 Posts: 46,545 ✭✭✭✭muffler


    yes you can insulate the inner leaf of the walls or insulate them externally. There are also grants available for this now.


  • #5
    d2ww
    Closed Accounts Posts: 501 ✭✭✭d2ww


    I was in a similar situation and got foam injected into the cavity. The rep told me that the foam is under such pressure that it will push back the fibreglass and fill the cavity, I was a bit sceptical but thought something is better than nothing. Later, I had a new window put in and noticed that the foam had indeed filled the cavity. The stuff does however have the density of candy gloss, so it's lifespan is anybody's guess. The other thing was that it was damp, but that could have being because the house was unoccupied for a few months before the ope was formed.


  • #6
    sydthebeat
    Subscribers Posts: 42,171 ✭✭✭✭sydthebeat


    d2ww wrote: »
    I was in a similar situation and got foam injected into the cavity. The rep told me that the foam is under such pressure that it will push back the fibreglass and fill the cavity, I was a bit sceptical but thought something is better than nothing. Later, I had a new window put in and noticed that the foam had indeed filled the cavity. The stuff does however have the density of candy gloss, so it's lifespan is anybody's guess. The other thing was that it was damp, but that could have being because the house was unoccupied for a few months before the ope was formed.

    that foam is NOT designed for pumping into a cavity..... you have been badly advised....

    to teh op... if there is already fibreglass in the cavity.. is there room to pump another material in there.... if so, consider pumping in more quilted material such as rockwool energysaver...


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