Ok thanks for input everyone, I was thinking wfp more for commercial use as it opens up more options, there are some people who would still want trad so I'd be doing them trad. I have a lot of houses with the small square windows, and was thinking wfp would be twice as fast, rather than scrimming them for what seems like 'forever' also the trad way on small square windows isn't the best job, especially in the summer, streaks and dust marks are hard to get rid of. I was hoping wfp would solve these issues?
So a van seems the way to go, I'll look into that idea. Ill see what sort of budget I need and work towards it.
My tuppenceworth, for what it's worth.
When I was looking to get into waterfed, I too originally thought "I'll spend a few hundred quid on a trolley or a trailer and use it for inaccessible windows and 3rd stories etc"
But after a LOT of researching, humming and hahhing, and help off here too, I decided to go for a small van (berlingo at the time) and DIY the rest.
So I bought a van, quite old, but low miles, and a tank and pump etc. Cobbled it all together and away I went.
The first thing I found is that WFP does a better job, a much better one. Cleaning the frames, and doing fiddly windows like leaded and (as you said) georgian is now a breeze, whereas it used to take ages.
And it's easier work. Climbing up and down ladders is hard work, and you don't realise quite how hard it is until you start with WFP. It's like wfp is cheating.
After about 3 months, when I really started to get the hang of it, and setting up was more routine (learning where to put the hoses at each house/building) it was approximately twice as fast. Hard to believe I know, but yes twice as fast.
And by this time I completely stopped using ladders. No matter if customers wanted it etc, I told them that WFP is the safest way and that's all i'm doing now. (My advice is don't ever offer trad to any customer, tell them its WFP for safety reasons. Believe me, once you go WFP you will NOT want to have anything to do with ladders again)
The only thing letting me down was my cobbled together system was quite unreliable.
So about a year and a half ago I decided to bite the bullet, get a better van and a professionally built system.
Got a VW Caddy (absolutely fantastic vans, highly reccomend) and a 400 litre Pure2o System. Why pure2o? well main reasons are that it's built by Ionic Systems, who are the best company out there by a long way (IMO) with Pure2o being their sort of 'value brand'. Plus they have a price promise so they'll match or beat anyone else's quote.
I also opted to get the van Speed Liner, which is not strictly necessary but nice to have. That's a sort of waterproof spray-on hard wearing coating on the inside of the van. So the van floor and walls are protected. That cost an extra £350 I think, but well worth it IMO.
So anyway, got my pure2o system fitted down at ionics factory and everything works perfectly now. Never lost a single day (or even a single minute!) of work time due to anything failing. The van too is great to drive, I love my caddy.
So, knowing what I know now, with the benefit of hindsight, if I were doing it again I would skip the old van and cobbled together diy system, and just go straight to the decent van and professionally built and installed system. Simple, hassle free and you're up and running.
Yes it costs more, but the extra cost is massively outweighed by the lack of hassle. Just my opinion.
For the sake of your budget, I'll tell you what I spent:
Van: £6,600
speedline: £350 (not strictly necessary but nice to have)
400 Litre Pure2o system (hard water) : £2990 approx - can't remember exactly (including fitting and vat)
Poles : about £360
Lots on here will say "save money and go DIY" "Go DIY and you will also know how to fix it if something goes wrong" etc etc. Sure you probably can save money but with a lot of hassle. In my opinion, it's better just to pay the money and get a ready built system professionally installed.