Building envelope | Required U-value (W/m | ||

Exterior wall | Adjacent to outside directly | Less than 0.36 | |

Adjacent to outside indirectly | Less than 0.49 | ||

Roof | Adjacent to outside directly | Less than 0.20 | |

Adjacent to outside indirectly | Less than 0.29 | ||

Floor of the lowest floor | Adjacent to outside directly | Floor heating | Less than 0.30 |

No floor heating | Less than 0.41 | ||

Adjacent to outside indirectly | Floor heating | Less than 0.43 | |

No floor heating | Less than 0.58 | ||

Sidewall of apartment building | Less than 0.27 | ||

Floor between levels | Floor heating | Less than 0.81 | |

No floor heating | Less than 1.16 | ||

Fenetrations and doors | Adjacent to outside directly | Apartment | Less than 2.10 |

Others | Less than 2.40 | ||

Adjacent to outside indirectly | Apartment | Less than 2.80 | |

Others | Less than 3.20 |