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Polystyrene beads insulation.

  • 18-10-2025 07:14PM
    #1
    me4many
    Registered Users, Registered Users 2 Posts: 299 ✭✭


    Hi folks

    I'm thinking of getting my cavity walls insulated with polystyrene beads. The house is about 1400 sq ft two storey detached. The walls are two 4" blocks with a cavity and it already has the polystyrene board .. probably 11/2 maybe 2 ". So the gap is probably another 2". The house is about 30 years old.

    Q: has anyone here had it done .

    Is it any good.....rough cost etc

    There's a grant of about e1700 as far as I know.

    Any thoughts /advice

    Thanks.



Comments

  • #2
    10-10-20
    Registered Users, Registered Users 2, Paid Member Posts: 9,703 ✭✭✭10-10-20


    Hi! It's normally called bonded bead, it's not normally described it as polystyrene bead as the loose polystyrene beads are encased in a resin, making them inert and immobile (there have been issues with loose polystyrene in the past).

    I had a 250 square meter detached house done for 4150 total, grant was 1750. I think it's worthwhile as external insulation is far more intrusive and a much bigger job, plus you'd still have the losses associated with the open cavity.

    My tip is to get three quotes anyway!



  • #3
    me4many
    Registered Users, Registered Users 2 Posts: 299 ✭✭me4many


    Tkx for reply and for giving me the correct name for the bead.

    I will get three quotes...



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