We employ 6 window cleaners in 3 vans and get a good daily performance, however if one man is off and someone needs to work by themselves, then generally they will do more than half of what they would have done as a team. One guy especially works very well on his own.
The downside to one man one van is the cost of first setting the van up and secondly the running costs, fuel, servicing, insurance, equipment etc.
One man will never do as much as two, however generally more than half of the two if working by himself.
At the moment our 3 teams are struggling to keep up with the workload we already have and I am looking to put another vehicle on the road to take some of the strain but I'm not sure whether to take on someone else or split one of the teams short term
I've also tried 3 in a van.... this really doesn't work.