3. Review and outlook
According to building references , for a poorly insulated building, energy
losses vary between 20 and 30% through attics and roofs, and between
10 and 15% through windows.
So, for the energy audit, if we're content with just an "overview
of assessments", attic insulation would seem to be the best renovation
solution. Since the building is old, it has poor attic insulation
and windows in poor condition.
...
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Review and outlook