Adding insulation over plywood

Old 01-04-19, 08:17 AM
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Adding insulation over plywood

My daughter wants to add insulation to a bedroom wall which abuts an unheated area we can access. The wall has some fiberglass insulation which is covered by plywood sheathing. Two questions:
  1. Can we just insulate over the sheating as one might do over an attic floor.
  2. Should we use fiberglass or is rigid foamboard a better option.

Old 01-04-19, 01:17 PM
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Can you post some pictures? What you've asked is a little vague for me to feel comfortable making a suggestion.

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