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Table 2 U-values (W/(m2K))

From: Estimating the savings potential of occupancy-based heating strategies

Component Low U-Values High U-Values
  (new building) (old building)
Walls, ceiling against outside 0.21 1.5
Ground plate 0.21 1.0
Roof 0.20 1.0
Windows 1.60 4.3
Doors 1.60 1.8