|Date||Tue, 2 Jul 2013 22:38:09 -0500|
Don’t be distracted by those irrelevant old junk science/glass myth articles about old glass.
This is something new to our industry - it’s something that actually matters a lot.
Scratches slowly grow more visible.
They look worse LATER than they did when they were new, and window cleaners HAVE to understand this to stay out of trouble:
1 - Tempered glass scratches stop growing wider (and more visible) at about 16 hours.
My understanding is tempered scratches can end up about 10x worse than at first.
2 – Annealed glass scratches grow more slowly – but keep growing for up to 14 days – and ultimately they grow nearly as bad as tempered.
My understanding is annealed scratches end up 8x or 9x wider than at first.
Window Cleaning Network
Oconomowoc, Wisconsin, USA