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A
Air change value
Air tightness
Airborne sound
Annual heating requirements

B
Blower door test/Air tightness test
Brandkennziffer
Building material class (Germany only)
Building material class / Euro class / Fire hazard class
Building moisture
Building physics

C
Capillary tube
CE mark
Condensate
Condensate
Convection
Core insulation

D
Dew point
Diffusion
Dynamic stiffness s’ (MN/m³)

E
ENEV (German Energy Saving Regulation) (Germany only)
Equilibrium Moisture Content
Evaluated normalized impact sound level Ln,w and L’n,w (dB)

F
Fire resistance class

G
Glaser procedure
Gross density

H
Heat protection during the summer
Heat storage capacity
Heat transmission resistances Rsi / R se (m²K/W)
Heat-transfer coefficient
Hydrophobic

I
Impact sound
Impact-sound improvement parameter ΔL w (dB)
Insulation wedge
Intermediate rafter insulation
Inverted roof

L
Length-specific flow resistance AF ((kPa s)/m²)
Lignin

M
Mold

N
Noise control
Nominal value of thermal conductivity
Non-ventilated roof

O
Over rafter insulation

P
Phase displacement
Procedure according to Jenisch
Protection against moisture/protection against humidity

R
Rated value of the thermal conductivity
Rear ventilation
Roof with air ciruclation
Room climate

S
Solid rafter insulation
Sorption
Sound bridge
Specific heat capacity
Structure-borne sound

T
Temperature - Amplitude ratio
Thermal conductivity λ (W/(m K))
Thermal diffusivity
Thermal insulation
Thermal resistance R (m²K/W)
Thermal transmittance coefficient (W/(m² K))
Transmission heat loss

U
Under roof insulating board (Germany only)

V
Vapor barrier
Vapor diffusion resistance factor µ
Vapor diffusion-equivalent air layer thickness sd (m)

W
Water vapor
Weighted sound reduction index Rw and R’w (dB)
Wind tightness
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