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Attic vermiculite is ~R14, desire R-49

Help Support House Repair Talk:

How would you get the attic insulation to R-49?

  • Remove vermiculite and replace with new insulation

    Votes: 0 0.0%
  • Roll out fiberglass over the existing vermiculite

    Votes: 3 75.0%
  • Blow insulation over the existing vermiculite

    Votes: 1 25.0%

  • Total voters
    4
  • Poll closed .

soparklion11

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My brother's house in Pennsylvania has asbestos-free vermiculite in the attic rafters to ~7 inches, which translates to R-14. The recommended level is R-49. Thank you!
 

Sparky617

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If you have easy access you could do rolls of fiberglass. Otherwise blown insulation. However, in either case you want to make sure you don't block any eaves vents by installing channels to keep them open. Go with unfaced fiberglass if you use rolls. No need to remove the vermiculite, it is still providing insulation and if you know it doesn't have asbestos in it there isn't any problem leaving it. Removing it would be a huge mess.
 

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