RE: [World] Tempered glass

["Gary Mauer" <>]

>>>No Gary it was not new construction. It was a very wide front storm door, 
>>>with a fancy
wrought iron thing around it ... by far the heaviest door I have come across. 
-- Jamie
Bordato<<<

The weight of the door doesn't matter - but the fact that it's a door means 
it was
probably tempered.

You can tell where the tempered glass is by looking for a tempering mark in 
the corner.
The mark will have the word "tempered", the name or logo of the temperer, and 
the name of
an ANSI standard.

Tempered glass is required in the most obviously dangerous places - where 
people could
walk into, kick or walk under breaking glass and get seriously hurt by large 
pieces. That
means doors, glass next to doors, glass that extends to the floor, skylights 
and transoms.

Sometimes every piece of glass in the house will be tempered - and even when 
there are
only a few pieces of tempered glass, quite often more than one temperer will 
be involved.

I did a home last week with the typical mix - where glass was annealed except 
where
tempered was required by codes. There were 4 different brands of tempered 
glass. One brand
was scratched.

I did another job where the same company's tempering mark appeared on single 
lites of
tempered glass that were smooth on both sides - but the same company's mark 
appeared on
some IG units (double panes) that had fabricating debris issues.

If there's a fabricating debris issue on your customer's tempered glass, it's 
typically
only going to be on one side - the side that was touching the rollers when it 
was
tempered. Sometimes they'll build those IG units with both itchy sides out - 
but sometimes
they'll be inside, out of harm's way.

If the glass is clean enough you can actually feel excessive levels of 
fabricating debris
with a scraper - and you can hear a raspy sound.

I hope you can make it to the Picnic - we're going to get into that again 
this year.

Gary Mauer
Window Cleaning Network
Oconomowoc, Wisconsin, USA
www.window-cleaning.net

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Window Cleaning Network Picnic is July 30!!