Sorry for changing the subject - what is Therm Shine?
Its like an Ionics system, just better.

As I have said before, it is statistically more dangerous on the road than climbing a ladder. Please stop going on about it folks, it's getting boring now... :
So 40,000 odd window cleaners on ladders and about 12 per year killed,.. a 1 in 3333 chance
35,000,000 cars on the road and 3000 deaths = 11666 chance of getting killed
speaks for itself really.
Where did you get the 40,000 figure for window cleaners on ladders? Did I miss something?
And remember, the deaths are for all ladder users, not just window cleaners. Think how many others use ladders; BT, Sky, builders, painters, diyers. So I stand by my statement that it is statistically better to use a ladder than use the road.
40,000 was a figure mentioned here before of UK window cleaners using ladders.
Regardless of the statistics, the WAHR rules are clear as crystal, and if you fall from a ladder or cause damage when using a ladder in a situation where wfp or another method was reasonably practicable, then your insurance could tell you that your claim is not valid because you were technically breaking the law.
If its an employee or member of the public that gets injured because of ladder use you may face prosecution (The H&S people rarely prosecute until after an accident occurs) and could end up with a hefty fine & possible even jail time.
There is also the corporate manslaughter act,.. someone dies because of your unsafe/illegal ladder use you could be charged with manslaughter,.. that might put a slight dent in your reputation locally,...
Ladders are not banned, but the restrictions are much tighter than many ppl realise. It is almost impossible to clean windows on a daily basis using ladders without breaking these laws.