Balcony
The glass door (or window) cracked
(1) The entire glass door (or window)
(2) The starting point of the crack
(3) Manufacturer name and model number located on the screen door.
■Cracking of glass due to thermal heat
While wire-reinforced glass is effectively known for its fire resistance and shatterproof quality, there is also the possibility of the glass cracking due to the expansion of the wires inside the glass reacting to thermal heat.
■How to prevent the glass from cracking
To prevent cracks caused upon force impact and/or thermal heat, please avoid placing furniture near the glass doors (or windows). Please also refrain from using hot water, heating fans and heat-insulation films on or near the glass.