haha. Got another job tomorrow on a patio area so I can get some more practice. smurf do you just use pressurised water when cleaning or do you add chemical to the water mate.
I've never bothered with tfr type surfaces cleaners used with a washer chem injector.
However depends on the job as sometimes I just use stronger mix of hypo (softwash mix) or even neat on bad areas without using a washer at all. Then just rinse down using a garden hose. Others I may treat the surface first with a softwash mix then use a fsc to reduce overspray/drift. Or may use a pressure washer first then afterwards treat stubbon black spot etc with hypo if need be.
I like to have a play and use the methods that are most suited to the job in hand. On pavers with bad mortar joints if using high pressure best to warn the custard that broken mortar will be removed in the cleaning process. Then is up to them to sort it out afterwards.