Section J

A Closer Look at Section J

We have picked out a few key points from each of the new parts of Section J starting with J1.3 Roof and Ceiling Construction. Roof and Ceiling Construction This appears to be a very short section which should be easy to get one’s head around. If you take out all the lines of text relating […]

A Closer Look at Section J Read More »

Thermal Performance of Walls

In Sydney (Climate Zones 5 & 6) commercial buildings require an R-value of R2.8 for the external walls. A common misconception is that a double brick wall will achieve that. Unfortunately brick is not a good insulator. It does have thermal mass, an advantage which is recognised in some situations, but commonly commercial buildings require

Thermal Performance of Walls Read More »

Proving Compliance

Occasionally a certificate purporting that a design complies with Section J is submitted yet there is no evidence to show that it does. Application Solutions checked up on a certificate recently only to find the person concerned didn’t have a copy of Section J and didn’t know what it contained. That didn’t stop him claiming

Proving Compliance Read More »

Glazing

Sometimes the results of the glazing calculations seem counter intuitive. For example improving the thermal performance of the glazing (using lower U and SHGC values than required) should, you would think, improve compliance. This is not always the case. In some climate zones (eg Climate Zone 6) the calculator looks for some solar heat gain

Glazing Read More »

Scroll to Top