Thought soft washing would be an easy add on to my windows.Two days later and 10 litres of blackwash two applications cost £2 per slab.It only looks 90% good.Time to get out the pressure washer.Think I'll stick to my windows. P.S.Amonzon selling 20 litres of bleach for £23 cheaper than blackwash at£60.
Seriously softwashing is a learning curve for sure space monkey as is not as easy as people make out it to be using correct dilution rates, methods etc to get good results. Sometimes you also need to jet wash ground surfaces too if you want to achieve a deeper clean. Be that cold, hot or steam depending what you want to clean.
Benz blackwash is very expensive to buy compared to mixing your own SH mix but all the same if used correctly I've found it does work extremely well.