I have had a few jobs recently with Low E glass windows.
On one job, the client approached me with manufacturers guidelines warning that use of a Squeegee one E glass is not recommended.
It seems to me that the big issue for window cleaners when going against manufacturers recommendations is liability. Even for pre-existing damage, it would be hard to avoid blame if you could be accused of using a method not approved by the manufacturer.
I recently wrote to a manufacturer here in Australia raised the question of approved cleaning methods.
This was their response:
"Hi Michael, Thanks for your enquiry regarding the cleaning of Viridian Low E glass.
Viridian do not offer specific advice on the use of squeegees however our concern in cleaning with this would be the aluminium stiffening rods that form part of the squeegee having contact with the Low E coating."
So it seems that manufacturers are mainly concerned with any metal contacting the glass... which makes perfect sense.
Nevertheless, when manufacturers clearly state that squeegees must not be used on E glass, it does put the window cleaner in an awkward position in terms of liability and blame.
I have spoken to a few other window cleaners in Australia who told me that they use pure water on the interior glass... but of course, getting a good rinse is always going to be an issue with using pure water on interior glass. Others tell me they just use the traditional squeegee method with a lot of extra care, making sure that the scrubber is 100% free of grit and a new rubber is used each time.
In my mind, unless a manufacturer specifically states not to use a particular cleaning method, the window cleaner has the freedom to choose. But going completely against specific manufacturers recommendations is playing with fire.
On one job, the client approached me with manufacturers guidelines warning that use of a Squeegee one E glass is not recommended.
It seems to me that the big issue for window cleaners when going against manufacturers recommendations is liability. Even for pre-existing damage, it would be hard to avoid blame if you could be accused of using a method not approved by the manufacturer.
I recently wrote to a manufacturer here in Australia raised the question of approved cleaning methods.
This was their response:
"Hi Michael, Thanks for your enquiry regarding the cleaning of Viridian Low E glass.
Viridian do not offer specific advice on the use of squeegees however our concern in cleaning with this would be the aluminium stiffening rods that form part of the squeegee having contact with the Low E coating."
So it seems that manufacturers are mainly concerned with any metal contacting the glass... which makes perfect sense.
Nevertheless, when manufacturers clearly state that squeegees must not be used on E glass, it does put the window cleaner in an awkward position in terms of liability and blame.
I have spoken to a few other window cleaners in Australia who told me that they use pure water on the interior glass... but of course, getting a good rinse is always going to be an issue with using pure water on interior glass. Others tell me they just use the traditional squeegee method with a lot of extra care, making sure that the scrubber is 100% free of grit and a new rubber is used each time.
In my mind, unless a manufacturer specifically states not to use a particular cleaning method, the window cleaner has the freedom to choose. But going completely against specific manufacturers recommendations is playing with fire.
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