Go to Forum Home › Building Refurbishment and Retrofit › Cavity wall insulation – Retrofit/exposed location

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    • 10 April 2007 at 8:30 am #30679
      Anonymous

        Require some advice for a refurbishment dwelling we're working on.

        very exposed location (high driving rain index)
        50mm cavity wall with no insulation
        stone facing or weather boarding external finish
        current proposals involve drylining (80mm Phenolic [no space for mineral wool etc])

        Is it possible to get some extra insulation in the cavity?
        I assume warmcel and the likes would not be possible as the water would just track across the cavity. What about a loose insulation like pummice/pertlite or some other sort of volcanic rock? I assume this would still let any water that penertrates fall down the cavity?

        I await your knowledgable responses oh learned ones

        Thanks

        Jonny

      • 10 April 2007 at 6:04 pm #33871
        Anonymous

          More of a learner than a learned one

          What about something underneath the weatherboard or between the fixing
          battons
          Is the phenolic like EPS (jablite) , if so thats got to be reasonable waterproof

          Or external insulation with a render finish

          jim

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