ive just gone water fed. i gave my customers a leaflet explaining that i now do conservatory roof's, i have had loads of people asking for qoutes but i told them i had to get the chemicals first before i could qoute. How long does the standard roof take? i was thinkin around 2 hours for the whole c onsrevatory. and charging around £50. also did you do it in stages? like half of it at a time on the roof?oh and doe it help to use a different brush head for this job than the one you usually use for the windows?ste