John,In my humble oppinion you would be better off getting a petrol engined unit ( 11hp Honda or Briggs and Stratton ) with a power output of 200bar. This will clean anything and will last you forever. Treat yourself to a Turbo lance and there will definately be nothing that you won't be able to get clean.If you want to ask any questions on how to do certain things / Tips etc let me know what you need and i'll do my best to answer them.Hope this helpsDenzle
I would need to spend £2000 minimum for some robust kit. Also thinking of tagging it onto window cleaning must admit damage to property could be a worry. I'll keep watching this thread with interest.