Skip to main content
Regional validity

Scope

Building physical assessment

Fire performance REI 60
maximum span = 5 m; maximum load Ed,fi = 3,66 kN/m²  
Classified by IBS  
Thermal performance U 0,15 W/(m2K)
Diffusion adequate
Calculated by HFA  
Acoustic performance Rw (C;Ctr) 52 dB (-2; -7)
Ln,w (Cl)
Assessed by TGM  
Mass per unit area m 47,1 kg/m2
Calculation based on gypsum plaster board type DF GF
 

Datenblatt flat roof
fdrhbi01b-03 (pdf, 250 KB)

Note

The design of the under-roof construction and of the counter-battens have to be specified according to the roof pitch and the national requirements.

timber frame construction
Cross-section of standard configuration

timber frame construction
Standard configuration

Register of building materials used for this application, cross-section (from outside to inside)

Thickness [mm] Building material Thermal performance Reaction to fire­
λ μ min – max ρ c
A sheet metal roofing or plastic roofing membrane 7800 A1
A Plastic roofing membrane E
B 24,0 spruce wood closed cladding without spacing of cladding boards 0,120 50 450 1,600 D
C 80,0 spruce wood counter battens (ventilation) 0,120 50 450 1,600 D
D sarking membrane sd ≤ 0,3m 1000 E
E 22,0 softboard [045; 250] - rigid underlay 0,045 5 250 2,100 E
F 240,0 construction timber (80/*; e=800) 0,120 50 450 1,600 D
G 240,0 mineral wool [040; ≥16; <1000°C] 0,040 1 16 1,030 A1
H vapour barrier sd≥ 2m 1000
I 50,0 spruce wood cross battens (50/80;a=400) 0,120 50 450 1,600 D
J 50,0 mineral wool [040; ≥16; <1000°C] or without insulation in type 01 0,040 1 16 1,030 A1
K 25,0 gypsum fibre board (2x12,5 mm) or 0,320 21 1000 1,100 A2
K 25,0 gypsum plaster board type DF (2x12,5 mm) 0,250 10 800 1,050 A2

Ecological rating (per m2 construction area)

Database ecoinvent

ΔOI3 41,2
Calculated by HFA  

Resources
Lifecycle
Phase
GWP
[kg CO2 Äqv.]
AP
[kg SO2 Äqv.]
EP
[kg PO4 Äqv.]
ODP
[kg R11 Äqv.]
POCP
[kg Ethen Äqv.]
PERE
[MJ]
PERM
[MJ]
PERT
[MJ]
PENRE
[MJ]
PENRM
[MJ]
PENRT
[MJ]
A1 - A3 -24,043 0,185 0,084 3,26e-6 0,012 48,570 629,748 678,318 595,082 22,867 617,949

Last update 07.05.2020/hfa.plb