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D1 BER: How much effort to get a B2+ rating?

  • 15-06-2023 10:32am
    #1
    Moderators, Entertainment Moderators Posts: 18,008 Mod ✭✭✭✭


    I want to improve the energy efficiency of the house, primarily with a view to making it warmer. It's currently D1-rated (largely detached) bungalow and is a single cavity block build with (old, not great) double glazed windows and a light layer of attic insulation. Vents are the old "hold in the wall". The flooring is suspended timber flooring.

    If I go for a one-stop-shop, I'd need to achieve a B2 or higher. How much work (roughly) could be required? I know it's a bit of a tricky question and that the required assessment would tell me but before I fork out for all of that would appreciate it if someone has a very rough idea. I was thinking external insulation + new windows/doors + attic insulation but not sure that'd be enough. Going for the likes of an electric pump (to get to that B2+) would seem to be quite expensive and, from what I read, not necessarily going to save me a load of money long term for my build but it might be seen as "required" to get that B2+ rating.



Comments

  • Subscribers Posts: 42,507 ✭✭✭✭sydthebeat


    external insulation, new windows and doors, more efficient heating system and heating controls, and possibly some PV

    if going for a heat pump system definitely get the floros replaced, suspended timber floor are terrible for energy efficiency



  • Registered Users, Registered Users 2 Posts: 4,135 ✭✭✭spaceHopper


    If it's 30 ish years old expect to rewire it too



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