Heat treatments that turn annealed float into safety and high-strength glass — toughening, heat soaking for quality control, and heat strengthening.
Annealed glass is heated above 600°C then rapidly cooled, making it four to five times stronger than standard glass — and a Grade A safety glass that shatters into small, blunt particles. For windows, shower screens, splashbacks, pool fencing, balustrades, table tops, and shelves. AS/NZS 2208. 4mm from 300×35mm; 5–19mm to 5000×2400mm.
A quality-control process that reheats toughened glass to around 270°C to detect nickel sulphide inclusions and dramatically reduce the risk of spontaneous breakage. Certified to EN 14179-1:2016 — recommended for overhead, structural, and high-rise glazing.
A furnace process making glass roughly twice as strong as annealed. It breaks into large pieces, so it is not a safety glass — ideal for curtain walls, canopies, and spandrel panels where thermal stress resistance matters.
