One of the most frequent questions I get asked is: “When will the 6 star regulations commence?” The simple answer is, for Victoria they will commence from 1 May this year, as per BCA 2010 and the Building Commission. In other states such as: ACT, QLD and SA, they already commenced last year.
A point of confusion was whether 6 star energy efficiency is required, even if the design process was carried out prior to May this year. I called the Building Commission to clarify this, and they advised the following: that if there is substantial evidence that the design was carried out prior to May 2011, then a 5 star energy report carried out later on, will still be applicable and comply. However if there is no evidence, then a 6 star energy report will be required.
My focus from here on, will be about your designs complying with the new regulations.
When you’re designing new projects, consider the inherent thermal efficiencies of these wall types, ranked most efficient to least efficient.
This was briefly discussed in our September 2010 issue:
- Hebel Panels
- Polystyrene (EPS)
- Brick work
- FC Sheet Cladding
- Metal Cladding
Another question I often get asked is about window frames. Which is more energy efficient, timber frame type or aluminium?Timber frame type are generally about 10% more energy efficient than aluminium window frames.
With the garage being north facing and standard insulation applied (refer drawings below):
Energy efficiency rating with timber is: 6.0 stars (complies with new Code)
For further information, feel free to contact our office on 03 9390 2934 or by email firstname.lastname@example.org.
Visit our website www.efficientenergychoices.com.au.
Talk again in the next edition, stay tuned!
Electrical Engineer; Energy and Sustainability Consultant