Hello all. I've been a member of the forums for quite some time now and have recently taken the plunge and set myself up with a van and wfp set-up. Starting from scratch in the first 4 weeks of work I am up to 35 regular customers and so am happy with the slow but gradual growth. I have been cleaning mainly standard upvc framed modern windows up until now but today got a job to clean a large house with some upvc but also some older style windows. My question may be a stupid one but is it ok to wfp wooden framed windows, sash windows and alike? Do you get many runs or streaks etc? Is there a particular technique or is it just a case of good clean then lots of rinsing? I have attached some pictures of the ones I will be cleaning next week. Thanks in anticipation for your advice!