Using Climate to Your Home Design Advantage

One of the key qualities of passive home designs, which the government recommends for new housing, is that it adapts to the local climate. Perth's Mediterranean climate, with hot summers and mild winters, means the priority is on cooling the home, instead of heating or both. Lighting will not be much of a problem since, literally speaking, Perth is a sunny place; however, the technical details go way deeper. Here are the characteristics of a typical home in Perth based on data collated by Think Brick Australia via their Designing for Climate initiative.

Insulation Everywhere

Some may think that insulation is only necessary in cold climates, but it also works well in hot climate areas. If insulation isn't busy keeping the warmth in during the winter, it's keeping the warmth out during the summer. Perth homes must have insulation with an R-value of between 1.5 and 3.0, with the ceiling at 3.5. The thickness required to achieve these values depends on the insulator. Thickness of some insulation material based on R = 3.5 are as follows:

  • 160-220 mm polyester batt
  • 160-230 mm sheep's wool batt
  • 130 mm rockwool batt
  • 140 mm cellulose fibre

Go for a Skillion Roof

A skillion roof enhances runoff by placing it at a steep angle and focusing it to a single direction, reducing the gutter’s overall length. Perth's wet winter is a chance for residents to harvest as much runoff as possible before the dry summer. Connect the downspout to a tank or rainwater system.

Leave reply

Back to Top