Just got new contract and pretty straight forward except,there s about 30 windows on a roof thats really hard to get a hose to.I don t realy want to trad them and just wondered if anyone could suggest a pump/sprayer type thing to do these few windows. They are all waist high by the way so don t need a lot of pressure, i don t want to invest in a back pack as i can usually get round jobs like this and it would nt get enough use. cheers mick