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http://www.youtube.com/watch?v=dAC6-5OE0FY&feature=plcpJust use this thats all you need.
Personally I use a hose lock 1.5 L hand pump sprayer from b&qViro sol and a pole and sill brush,Few spare fittings so I can use custys tap if possibleAnd a set of a-frame ladder so it's safe to work. That's about it I think mate