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Building materials
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Components
Flat roof

Flat roof

Regional validity

Scope

All components Germany

Flachdach/flachgeneigtes Dach

Components Flachdach/flachgeneigtes Dach

25 Components

Constrution +

Construction

Timber frame

Exposed rafter

Solid wood

Roofing

Tile

Metal sheet

Membrane materials

Roof structure

Ventilated

Not ventilated

External planking

MDF

Softboard

Wood cladding

Cavity insulation

Mineral wool <1000°C

Mineral wool ≥1000°C

Cellulose

Sheep wool

Wood fibre

Roof insulation

Mineral wool ≥1000°C

Wood fibre

Polystyrene

Dry lining

With battens

With suspension

Directly

Without

Internal Surface

Wooden

Other

Building physics +

Fire performance

REI30

REI45

REI60

REI60 / K₂60

REI90

REI90 / K₂60

Thermal performance

U ≤0,15 W/(m²K)

U 0,16–0,20 W/(m²K)

U ≥0,21 W/(m²K)

Acoustic performance

R_w ≤43 dB

R_w 44–47 dB

R_w 48–57 dB

R_w ≥58 dB

Sustainability +

Energy use of Primary Energy

<600 MJ/m²

<700 MJ/m²

<850 MJ/m²

<1000 MJ/m²

∑ΔOI3

<30

<40

<55

<70

GWP-T

<-45 kgCO₂Äqv.

<-35 kgCO₂Äqv.

<-25 kgCO₂Äqv.

<-15 kgCO₂Äqv.

Built-in renewable materials

>40 %

>60 %

>80 %

Energy use of Primary Energy

<500 MJ/m²

<700 MJ/m²

<1000 MJ/m²

<1200 MJ/m²

Share of renewable Primary Energy

>10 %

>20 %

>30 %

>40 %

Biogenic carbon

<40 kgCO₂Äqv.

<70 kgCO₂Äqv.

<100 kgCO₂Äqv.

<130 kgCO₂Äqv.

Built-in renewable materials

>40 kg/m²

>60 kg/m²

>80 kg/m²

Hits for components flat roof

fdmbi01a
3 Variants

fdmnko01
2 Variants

fdmnti01a
2 Variants

fdmobi01a
4 Variants

fdrhbi01a
8 Variants

fdrhbi01b
8 Variants

fdrhbi02a
7 Variants

fdrhbi02b
7 Variants

fdrhbi03a
7 Variants

fdrhbi03b
7 Variants

fdrhbi04a
7 Variants

fdrhbi04b
7 Variants

fdrhbi05a
7 Variants

fdrhbi05b
7 Variants

fdrhbi06a
8 Variants

fdrhbi06b
8 Variants

fdrhbi07a
7 Variants

fdrhbi07b
7 Variants

fdrhbi08a
8 Variants

fdrhbi08b
8 Variants

fdrhbi10a
7 Variants

fdrhbi10b
7 Variants

fdroba01a
3 Variants

fdrobo01a
4 Variants

fdrobo02a
3 Variants

Components

Wall
External wall
Internal wall
Compartment wall
Component ceiling / roof
Intermediate floor
Floor towards attic
Pitched roof
Flat roof

Information about components
Nomenclature

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