Exterior refurbishment with existing interior paneling (beaded, profile, etc.)
- Tiling battens
- Cross/counter battens
- GUTEX Ultratherm
- Air barrier as per GUTEX System partner
- Mineral wool between the rafters
- Tongue and groove wood paneling min. 10 mm
U-value requirements (as per EnEV 2014): ≤ 0.24 W/m²K
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