Whops ... John, it was a joke mate - look at our website
Thats the sort of reaction guys get on the carpet cleaning side of the forum
most of the subjects ie m/cs sealing ect have been covered numerous times try some searches if you havent already..
I would however treat your customer responses with some caution even if they initially seem keen. You may have a large database for carpet cleaning it does not mean you can simply convert them to exterior cleaning - dont take this the wrong way!
Personally if I was starting of p washing I would not offer sealing - concentrate on cleaning sanding possibly weed kill (need licence) sell it as a refurb leading to future maintenance cleans yearly or every other yr ... as opposed to sealing.
Best time of yr to start March - April
Best Mike