CT2 Building Codes

CT2 is responsible for supporting and exchanging experience in order to develop dynamic building codes for all types of buildings and to support countries with the achievement of Nearly Zero Energy as standard in new constructions as well as implementing mandatory requirements for existing buildings, whether in major renovation or at component level.

The main focus is on residential and smaller non-residential buildings, and it also covers overall performance as secondary requirements for building parts, technical systems or overall heat losses and gains. The work is closely linked to CT1 – New Nearly Zero Energy Buildings, CT3 – Existing Buildings and CCT1 – Technical elements.

A major topic for CT2 is dynamic building codes for new construction and how these develop towards and go beyond Nearly Zero-Energy Buildings (NZEBs) in the participating countries. Specific attention is given to definitions of NZEB, definition of nearby renewable energy sources, how cost-optimality is implemented in requirements for new buildings as well as compliance with building codes in general.

EPBD Articles relevant for CT2 are the following:
• Article 4 – Setting minimum requirements for new buildings
• Article 5 – the implementation of cost-optimality in connection to new buildings
• Article 6 – on New Buildings
• Article 7 – on Existing Buildings
• Article 8 – for system requirements in connection to new buildings

CT2 further supports the set up and improvement of calculation methodologies looking into the implementation of the 2nd generation of the CEN EPB standards, electromobility, NZEBs, certification of new construction and control systems.

Key topics for CT2 are:
• Dynamic building codes (updated at least every 5 years)
• Implementation of CEN EPB standards
• Nearly Zero Energy Building codes for all buildings from 2021
• Requirements for building structures and technical systems
• Secondary requirements in buildings codes (additional or complementary)
• Requirements for existing buildings (so far as this is functionally, technically and economically feasible)
• Cost-optimality in building codes

Lead by the Building Testing and Research Institute TSUS (Slovakia) – Zuzana Sternova