External door
External doors are often used as emergency exits which are also burglary retardant in stores, retail shops, function rooms, concert halls, industrial buildings, etc. They can also be used indoors…
When doors are fitted in a wall which separates two rooms that have a different operating temperature (e.g. between living areas and communal areas) or between internal premises and the external environment, they must have thermal insulation capability.
To be considered to have thermal insulation properties, the door must have a U value of ≤ 3.5 W/m²K and guarantee a minimum air tightness (minimum of class L2).
European standards | EN 10077-1 EN 10077-2 |
---|---|
Symbols | T |
Resistance class | According to declared Uw values: T0: >3.5 W/m2K T1: ≤3.5 W/m2K T2: ≤3.0 W/m2K T3: ≤2.5 W/m2K T4: ≤2.0 W/m2K T5: ≤1.5 W/m2K T6: ≤1.0 W/m2K |
Heinen |
T0 T1 T2 T3 T4 T5 |
Class T6 thus obtains the best thermal insulation.
N.B. => Legally defined value in Belgium: T4 ≤ 2.0 W/m²K!
Here are some examples of specific uses available for this Heinen's product
External doors are often used as emergency exits which are also burglary retardant in stores, retail shops, function rooms, concert halls, industrial buildings, etc. They can also be used indoors…
Emergency exits are often obligatory in public buildings, department stores and shops, cultural centres and function rooms, industrial buildings, schools and universities, embassies and many other places accessible to the…