Voluntary standard for new buildings
SANS 204 contains performance levels that are higher than SANS 10400-XA and defines the minimum requirements that must be adhered to, to achieve a 3 star Green Building rating.
SANS 204 was published as a voluntary National Standard for "Energy Efficiency in Buildings" in October 2008 and updated in August 2010.
Over the next 3-5 years the performance level in SANS 10400-XA will be increased to SANS 204 levels and it is therefore advised that future buildings are designed to SANS 204.
Building Envelope
It sets out the general requirements for achieving energy efficiency in all types of new buildings, both for naturally ventilated buildings and for artificially ventilated buildings.
- Site and building orientation
- Shading
- Building design
- Floors
- External walls
- Fenestration
- Roof Assemblies
- Roof lights
- Building Sealing / Mechanical Ventilation and Air Conditioning
- Services
Roof and Ceiling system requirements
The roof system must achieve the R-value specified in the table below dependent on the energy zone in which you are situated.
Mechanical ventilation and air conditioning
Air conditioning or mechanical ventilation systems (or both) installed in buildings shall comply with the relevant national legislation
Hot water supply requirements, Geysers
A minimum of 50% of the annual average heating requirement for hot water must be provided by means other than electric resistance heating (Geyser) or fossil fuels
- All hot water pipes must be insulated with a minimum R value of 1
Over the next 3-5 years the level in SANS 10400-XA will be increased to SANS 204 levels and it is therefore advised that future buildings are designed according to SANS 204 requirements.