Looking at getting WFP Backpack

[newleaf]

I'm looking to start up doing window cleaning as an add on to my carpet cleaning in the New Year, was going to start doing traditional back in the summer but decided to delay as not too keen on ladders. I already have all the trad gear so will be looking to do a sort of mixture of the two, down stairs trad and upper floors using a backpack.

I'm in two minds in which backpack to go for, WCW or Gardiners as i have read good and bad about both, also how many liters of water realistically do i need to budget for on a day.

 

[RiceRocket]

I would estimate just for doing top windows 25-30L per hour although double that on first cleans to soak away built up dirt & soap from previous trad cleans.