Got a roof and some gutters to clean on a bungalow on one of my pressure cleaning jobs. A few questions... Is it safe to put UBIK in an IK-9 Pressure Sprayer? I'm thinking about buying a Vikan waterfed wash brush for the gutters, fascias, soffits and garage doors etc. Namely these... Vikan Water-Fed High / Low (Hi/Lo) Car Vehicle Wash Brush Head Soft 280mm Vikan Extending Pole Vikan Gardena/Hozelock QR Adaptor I think those will cost around £70 Will soft bristles be OK or would a stiff head be better? It's a huge bunglow and double garage and the whole place is turning green. I figure this brush + UBIK and sprayer will do the job. Is this a wise move or are there better tools for the job?