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depiction:

DA05f_

 Ceiling, roof: flat or pitched roof exposed to outside air – back-ventilated – heat flow ascending (BG1) – IBO benchmarks 2020
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0,112 W/m²K
A++
A+
A
B
C
D
E
F
G
OI-Class (BG1)³
A
mass 69,9 kg/m²
PENRT 1329 MJ/m²
GWP total -14,8 kg CO2/m²
AP 0,245 kg SO2/m²
no. type layer d
cm		 λ
W/mK		 R
m²K/W		 ΔOI3
pts/m²
1 homogene Schichthomogene Schicht gewebearmierte Kunststoff-Schweißbahn (>1,7 kg/m2) (Polyethylene (PE) sealing sheeting) 0,25 0,500 0,01 ¹ 9
2 homogene Schichthomogene Schicht Expandiertes Polystyrol (Gefälledämmung) (EPS-P (30 kg/m³)) 12,00 0,035 3,43 22
3 homogene Schichthomogene Schicht Expandiertes Polystyrol (EPS-P (30 kg/m³)) 10,00 0,035 2,86 18
4 homogene Schichthomogene Schicht Abdichtungsbahn (sd=220m) (Bauder TEC KSD, Bauder TEC KSD DUO) 0,15 0,170 0,01 ¹ 4
5 homogene Schichthomogene Schicht Brettsperrholz BBS (5-lagig) (binderholz Brettsperrholz BBS (Fichte)) 10,00 0,120 0,83 16
6 inhomogene Schichtinhomogene Schicht inhomogeneous (parts parallel to the eaves) 6,00      
    56,5 cm (90%) ISOVER ULTIMATE UKF-034 twin Untersparren-Klemmfilz, vlieskaschiert 6,00 0,034 1,76 5
    6 cm (10%) Timber (475 kg/m³ - e.g. spruce/fir) - rough, technically dried 6,00 0,120 0,50 0
7 homogene Schichthomogene Schicht Rigips Feuerschutzplatte 1,25 0,250 0,05 2
    Rsi / Rse = 0,100 / 0,100  
    R' / R'' (max. relative error: 1,2%) = 9,009 / 8,803  
    building element 39,65   8,906 75
¹ layer is OI-relevant from BG1
² U value (Heat transfer coefficient) calculated according to ÖNORM EN ISO 6946.
³ For the OI class, the U-value of the component is taken into account in addition to the ecological key figures