Skip to main content
Regional validity

Scope

Building physical assessment

Fire performance REI 30
maximum span = 5 m; maximum load Ed,fi = 3,66 kN/m²  
Classified by IBS  
Thermal performance U 0,21 W/(m2K)
Diffusion adequate
Calculated by HFA  
Acoustic performance Rw (C;Ctr) 47 dB (-3; -8)
Ln,w (Cl)
Assessed by TGM  
Mass per unit area m 37,0 kg/m2
Calculation based on gypsum plaster board type DF GF
 

Datenblatt flat roof
fdrhbi08a-01 (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 Plastic roofing membrane or E
A sheet metal roofing 7800 A1
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
D 15,0 fibreboard (MDF) 0,140 11 600 1,700 D
E 200,0 construction timber (80/*; e=800) 0,120 50 450 1,600 D
F 200,0 mineral wool [040; ≥16; <1000°C] 0,040 1 16 1,030 A1
G vapour barrier sd≥ 1m 1000
H 50,0 spruce wood cross battens (50/80;a=400) 0,120 50 450 1,600 D
I mineral wool [040; ≥16; <1000°C] or without insulation in type 01 0,040 1 16 1,030 A1
J 12,5 gypsum fibre board or 0,320 21 1000 1,100 A2
J 12,5 gypsum plaster board type DF 0,250 10 800 1,050 A2

Ecological rating (per m2 construction area)

Database ecoinvent

ΔOI3 35,5
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 -31,213 0,172 0,071 2,38e-6 0,010 40,232 647,000 687,232 501,882 31,504 533,386

Last update 07.05.2020/hfa.plb