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glass wool: ageing / progress in insulation?

A friend of mine mentioned that the insulation capabilities of mineral wool may have improved in the last 10 or 20 years or so, so that it might be worthwile considering removing the glass wool currently insulating our attic (no idea how old it is...) and replace it by "modern" mineral wool.

Has anyone heard of it? Since we plan to board the attic, we'd like to do it now if it makes sense...

Andre

Comments

  • dominoman
    dominoman Posts: 973 Forumite
    Ninth Anniversary 500 Posts Combo Breaker
    I really can't imagine it would be worth it and would ever pay back.

    Just add some more insulation on top if you need to add depth.
  • Grenage
    Grenage Posts: 3,222 Forumite
    Part of the Furniture 1,000 Posts Name Dropper
    While it does become a little less effective over the years (compaction and dust), it's not going to make enough of a difference to replace the stuff. I'd simply lay more on top.
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