WERS Ratings

The Window Energy Rating Scheme (WERS) is accredited by the AFRC – which means that WERS ratings are compliant with the NCC.

Reports are prescribed both the window performance for total window U Value (Uw) and total window Solar Heat Gain Coefficient (SHGCw).

U-value

U-value measures how well a product prevents heat from escaping.

It is a measure of the rate of non-solar heat loss or gain through a material or assembly.

U-value ratings generally fall between 2.0-10.0 W/m2.K for Australian products. The lower the U-value, the greater a window’s resistance to heat and cold flow and the better its insulating value.

Solar Heat Gain Co-efficient (SHGC)

SHGC measures how well a product blocks heat caused by sunlight. SHGC is expressed as a number between 0 and 1. The lower a window’s SHGC, the less solar heat it transmits.

Under the Building Code of Australia, we are required to produce windows and doors that meet mandatory minimum specifications under Australian Standard (AS) 2047 – including AS1288.