Bushfire Attack Level (BAL): The Ultimate Guide for UPVC Windows
Hot northerlies, dry scrubs and ember attacks aren't abstract risks in Australia. They are a part of building decisions, and the problem with homeowners is that they start thinking about uPVC windows only when a builder raises BAL compliance. By then, the options are very limited, and homeowners have to make rushed decisions. MEANING OF BAL RATING FOR WINDOWS BAL stands for Bushfire Attack Level, and this standard measures the level of heat, flame, and ember exposure a home may face. The higher the rating – BAL 12.5 through to BAL-FZ – the tougher your window system needs to be. For Windows and doors, this means – Tight sealing against ember ingress Glass that resists radiant heat Frames that won't warp or fail under stress Standards are defined under AS-3959 and the guidance from the Country Fire Authority (CFA). The NSW Rural Fire Service sets the benchmark that builders must follow strictly. WHY UPVC PERFORMS WELL IN BUSH FIRE ZONES? Timber Chars. Aluminium transfers heat ...