system
December 7, 2007, 7:56am
1
system
December 7, 2007, 8:07am
3
Chris:
That looks pretty good.
Yeah…ALOT of work went into that letter! Im glad its done and look forward to Gana’s next move?
This was given out to members of the MWCoA this morning. I guess this could count as a response if you look over the dates from when the IWCA sent it’s letter and when this letter was sent out.
For Immediate Release Contact: Brian Pitman
December 12, 2007 Dir. Marketing and Communications
brian@glasswebsite.com
GANA Releases Caring for Today’s Architectural Glass
(TOPEKA) - The Glass Association of North America (GANA) today released a new
document titled Caring for Today’s Architectural Glass. The document follows.
Caring for Today’s Architectural Glass
Over the past 40 years, the flat glass industry has answered the calls from building
architects for safer, more aesthetically pleasing, and more energy efficient glass products
to replace the single pane, clear, annealed (non-heat treated) glass that has been used for
centuries.
The industry’s response has been high-performance glass products incorporating
innovations such as heat-treating, coatings, laminating, and multi-pane insulating units.
These high-performance glass products dominate the vision and non-vision (spandrel)
glazing in today’s building construction.
Many of these unique glass products are heat-treated during the fabrication process. Heattreating
glass involves moving cut-to-size glass pieces horizontally on ceramic rollers
through an oven that heats the glass close to its softening point and then quenching the
glass with high volumes of air to create the desired surface compression for increased
strength, impact resistance, and other attributes of enhanced performance.
It is a scientific fact that heat-treating glass does not change the surface hardness (i.e.,
scratch resistance) of the glass. Annealed glass and heat-treated glass have the same
glass hardness. Heat-treating does, however, change the glass surfaces in other ways.
Heat-treated glass may have slight surface markings, roller waves, or overall bow
resulting from the soft glass riding on the ceramic rollers. The glass also may have
microscopic particles adhering to one or both surfaces. These particles can come from
any one of a variety of sources in the heat-treating process.
The glass heat-treating industry cannot guarantee or warrant that surface particles or any
of the other conditions mentioned above will be completely eliminated from random
occurrence on finished tempered or heat-strengthened glass products, even when using
properly maintained equipment, and observing good housekeeping and fabrication
processes.
Like many specially engineered products, high-performance glass products require
special care and handling. The producers of these products, as well as the Glass
Association of North America (GANA), have generated documents to assist building
construction companies, post-construction cleaning companies, and building owners and
managers to properly care for these products. These documents can be obtained free of
charge from the original manufacturer of the glass product or from the GANA
organization website ( www.glasswebsite.com ). The GANA documents Proper
Procedures for Cleaning Architectural Glass Products and Heat-Treated Glass Surfaces
are Different, emphasize the need to avoid the use of scrapers in the glass cleaning
process because their use carries the high risk of scratching the glass surface when the
scraper drags surface particles left on the glass, whether by the heat-treating process or as
construction grit/dirt, across its surface.
system
December 15, 2007, 5:55pm
5
Yes…thats the latest release from our fine friends at Gana! Basically i wasn’t expecting much more,there sticking to there guns as usual…no surprise there!
Basically…there surely not going to change there position because that would surely make them wide open to possible litigation,in the vent someone wanted to really persue the matter! Of course as i previously mentioned the ASTM standards have to be challenged,but…its only obviously Gana is covering there tails there too by the changes that have been made to the standards.
Such a joke.
What it would be extremely humorous to see is a GANA-trained crew perform a scratch-free CCU on a sample, random new home.
A showdown, if you will…
What say we wrangle ourselves up such a showdown? May be just what the GANA folks need to wake up and smell reality.
Perhaps an open-letter challenge?
Such a joke.
What it would be extremely humorous to see is a GANA-trained crew perform a scratch-free CCU on a sample, random new home.
A showdown, if you will…
What say we wrangle ourselves up such a showdown? May be just what the GANA folks need to wake up and smell reality.
Perhaps an open-letter challenge?
Today, some of your more vocal window cleaners insist on doing things GANA’s way.
Garry
March 12, 2014, 9:16am
8
Garry
March 12, 2014, 9:45am
10
Thanks. Seven years old though. What ever came of the seminar or what ever it was recently in Finland I believe?
The IWCA hasn’t retracted that - and they’ve kept it posted on their website - so that remains the IWCA’s official position on GANA bulletins.
One result of my presentation in Finland, I was contacted by a large European window manufacturer for help with a roller side quality problem they had with their tempering fabricator, that lead to scratches during cleaning.
They got it resolved in their favor - as a problem with the glass, not the cleaners.
That’s what we need to have happen in the US - demand for quality on the roller side of tempered glass.
It’s just gonna so much harder here, because some of our window cleaners are very vocal about giving up.