the problem is dave there are loads of vans/wfp systems on ebay because the guys couldnt get enough work to make it pay!!
if your starting from scratch without buying some work its going to be very hard to drum up business without a lot of work from you.canvassing and leafleting are your best bets.
the problems are you wont have enough money to live on if you go for broke and give up your job without some savings behind you.
also can you clean windows?trad and wfp take a few months to get used to and up to a decent standard at a brisk pace.
your best bet is to work with a local cleaner on a saturday while you do your other job to see if you like it.
when you work for yourself its a whole different ball game.you have to wear all the "hats"
your the boss,,labourer,manager,receptionist,etc,etc.there is a lot more to window cleaning than actually window cleaning!!!
taxes,insurances,accountants,no holiday or sick pay,downtime due to weather,equipment/van problems all have to be taken into account when pricing up jobs.if you price too low and your work is scattered all over the place you wont make enough money and you will soon get disheartened.
if you could buy some work as well as a cheap van/wfp system to start you off would be good.if not then canvass/leaflet like crazy for 6 months every weekend until you do.
the pressure of finding the work after shelling out on equipment/van and sorting everything out with bills outstanding is not a good place to be.
im not trying to be pessimistic.just realistic!its getting harder out there.there is a lot of competition plus you need to gain the trust,loyality of your customers which takes years to build up.if your a "people" person like me you ll find it easier to pick up work than someone whos shy and retiring!
ive worked outside since i was 13.started working on a farm in the school holidays,plant nurseries when i left school,landscape gardening etc and ive been window cleaning 18 years now.if you like the outdoors then great.
if you find it hard to even walk to the shops for a bottle of milk in winter then maybe you should think long and hard before jumping in feet first.
best wishes
dazmond