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prDS CWA 18304:2025

Guidelines to establish the carbon bill of the refurbishment of buildings

General information

40.60     May 11, 2026

50.99   

DPS

DPS/KT 230

CEN/CENELEC Workshop Agreement

13.020.20     91.040.01  

Scope

This document defines the carbon bill (CB) of a building based on the global warming potential calculated according to EN 15978. The CB of a refurbishment compares the situation of the refurbished building and the situation without the refurbishment.
NOTE This document is based on the draft FprEN 15978:2025 (WI 00350041), which should be available as EN 15978:2025 in December 2025. However, the approach is considered valid for the previous version, EN 15978:2011.

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prDS CWA 18304:2025
40.60 Close of voting
May 11, 2026

Related project

Adopted from CWA 18304:2025 IDENTICAL