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Regional validity

Scope

solid wood construction
Cross-section of standard configuration

solid wood construction
Standard configuration

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.

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

Thickness [mm] Building material Thermal performance Reaction to fire­
λ μ min – max ρ c
A concrete roof tile /tiled roof 2100 A1
B 30,0 spruce wood battens (30/50) 0,120 50 450 1,600 D
C 30,0 spruce wood counter battens (Germany 30mm); Austria: minimum 50mm 0,120 50 450 1,600 D
D 22,0 softboard [045; 250] - rigid underlay 0,045 5 250 2,100 E
E construction timber (80/..; e=800) 0,120 50 450 1,600 D
F cellulose fibre [040; 50] 0,040 1 50 2,000 E
G sealing sheet (air tight)
H 120,0 cross laminated timber 0,130 50 500 1,600 D

Variations of building components

Thickness of layer Fire performance Thermal performance Acoustic performance Eco Sustainability Mass
Thickness [mm] Building material Σ REI U [W/(m²K)] Diffusion Rw (C,Ctr) OI3Kon m [kg/m²]
sdmhzo03-00 E
F
180,0
180,0
construction timber
cellulose fibre [040; 50]
30 0,18 adequate 45 (-1,-7) 137,6
sdmhzo03-01 E
F
200,0
200,0
construction timber
cellulose fibre [040; 50]
30 0,17 adequate 46 (-1,-7) 139,4
sdmhzo03-02 E
F
240,0
240,0
construction timber
cellulose fibre [040; 50]
30 0,15 adequate 47 (-1,-7) 143,0

Last update 27.06.2018/hfa.plb