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Cavity or insulated slab or both

  • 22-09-2013 03:10PM
    #1
    adam88
    Registered Users, Registered Users 2 Posts: 1,595 ✭✭✭


    Hi. Refurbing a 35 y/O house. In terms if insulation was going to do cavity wall insulation, was recently told that If I can afford it to do the internal wall insulation as well.
    Is be able to afford both but not sure if its a waste of money or not. Would it greatly add to the property or would the cavity wall insulation be enough.

    Any help would be appreciated.


Comments

  • #2
    Victor
    Registered Users, Registered Users 2 Posts: 78,819 ✭✭✭✭Victor


    Moved from Accommodation & Property

    Moderator


  • #3
    beyondpassive
    Registered Users, Registered Users 2 Posts: 558 ✭✭✭beyondpassive


    Cavity fill or internal drylining are improvements for limiting heatloss but compound cold bridge, surface condensation issues. Have you considered External insulation?

    In low budget jobs, It worth looking at overcompensating insulation at the floors and roof and introducing a forced air ventilation system and airtighten the build. (DCV/aereco or MHRV) Dryline the reveals of all windows and doors, new stoves in place for fire places. Dolle trapdoor. This gives the best 'bang for buck' for refurb.


  • #4
    adam88
    Registered Users, Registered Users 2 Posts: 1,595 ✭✭✭adam88


    beyondpassive wrote: »
    Cavity fill or internal drylining are improvements for limiting heatloss but compound cold bridge, surface condensation issues. Have you considered External insulation?

    In low budget jobs, It worth looking at overcompensating insulation at the floors and roof and introducing a forced air ventilation system and airtighten the build. (DCV/aereco or MHRV) Dryline the reveals of all windows and doors, new stoves in place for fire places. Dolle trapdoor. This gives the best 'bang for buck' for refurb.

    What I've priced for at the moment is floor insulation and ceiling insulation, cavity wall insulation and internal insulation. Putting in all new windows and putting in a stove and a very good quality boiler along with heating controls and all that lark. All this I can afford and feel that it's necessary.

    What I'm worried about is that parts of the house are liable for being damp and had mould/mildew (not sure which was there but it wasn't the bad type if you understand). Now in all fairness the house is thirty odd years old and was never properly lived in during the time I.e. heating rarely turned in etc. &&£ I'm worried that after all this work that ill still have damp etc. any suggestions ???? Do you think that both cavity and internal wall insulation would prevent this sling with the house being lived in and being heated often


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