Hello,
we are currently starting to renovate our house built in 1967. The attic is going to be converted, and the insulation (see photo) is already in place, but we have some questions for people who are experienced with this subject.
- The old vapor barrier or vapor retarder is brittle in several places due to UV exposure. It should definitely be replaced, right?
- The insulation consists of mineral wool, which was likely installed before 1996. Should this be replaced for health reasons or building physics reasons (insulation value)? Possibly moisture has already entered due to the damaged membrane.
Who has experience and can offer advice on how to proceed?
we are currently starting to renovate our house built in 1967. The attic is going to be converted, and the insulation (see photo) is already in place, but we have some questions for people who are experienced with this subject.
- The old vapor barrier or vapor retarder is brittle in several places due to UV exposure. It should definitely be replaced, right?
- The insulation consists of mineral wool, which was likely installed before 1996. Should this be replaced for health reasons or building physics reasons (insulation value)? Possibly moisture has already entered due to the damaged membrane.
Who has experience and can offer advice on how to proceed?
D
daemmstoffhai15 Oct 2015 13:03Moisture is the natural enemy of mineral wool. A vapor barrier must always be completely airtight. If you remove it and the compressed insulation wool falls down, the decision is clear. For cost reasons, it probably makes sense to replace everything entirely.
It is best to have this inspected by a professional, such as an energy consultant. You can find a guide on interior roof insulation here:
Links removed by moderator
It is best to have this inspected by a professional, such as an energy consultant. You can find a guide on interior roof insulation here:
Links removed by moderator
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