Com-Al Windows Pty Ltd worked through the night this week replacing a piece of toughened laminated heat soaked on glass spider fittings at the impressive looking glass façade at UniGlo’s flagship retail store in Perth.

Martin and the guys at RAC used Com-Al’s Maeda crawler crane and our Genie Z60 boomlift plus our Oktopus glass sucker unit to remove the broken glass and re-installed a new piece. The glass was supplied by Cooling Bros, thanks to the team there!

The installation of this commercial glass was a complex operation as it needed to be planned after hours and overnight. The replacement piece was heat soaked and laminated with holes for the Kinlong spider fittings and installed carefully over the existing canopy and trees. It all went very smoothly and without a hitch.

Complex Commercial Glass is what Com-AL Windows excels in and can come in a variety of forms.

UniGlo Perth Toughened Laminated Glass

Commercial glass can be in the form of toughened, laminated PVB or SGP, heat soaked and heat strengthened. It can be painted via a ceramic screen painted method or via a CAD based DipTech ceramic printer.

Even more complex glass can come in the form of Double Glazed units (DGU’s) or Insulated Glass Units (IGU’s) and can be toughened, laminated, heat soaked or heat strengthened.

In addition to this it is common to have a low E coating on the glass, either a hard coated Low E or a Soft coat Low E that provides additional thermal properties to allow high performing thermally efficient facades.

Typically the efficiency of glass is measured by the U-Value and the SHGC – what exactly do these terms mean?

U-value measures how well a product prevents heat from escaping. The rate of heat is indicated in the terms of the U-value of a window assembly which includes the effect of the frame, glass, seals and any spacers. The lower the U-value, the greater a window’s resistance to heat flow and the better its insulating value.


SHGC measures how well a product blocks heat caused by sunlight. The SHGC is the fraction of incident solar radiation admitted through a window, both directly transmitted, and absorbed and subsequently released inward. SHGC is expressed as a number between 0 and 1. The lower a window’s SHGC, the less solar heat it transmits.

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