Block paving disaster

[RAPressureWashing]

It was pretty cold today, left on for around 5-10 mins whilst agitating with wire brush

Couple of things went against you there, too cold, you'll find when it is around freezing some chemicals work very slowly almost not at all, and the dwell time was no where near long enough, when I'm doing a strip I leave the Mira on for at least 30 mins with Thompsons, just don't let it dry out (so add more if it is drying) Stiff nylon brush might be better, but again I have a low speed rotary machine to do this. I'd wait until the temperatures pick-up before having another go, 10 degrees and upwards would be better, and a longer dwell time, with the pavers soaked in Mira Strip.

[Eds9332]

Thanks for the advice, I was putting the Mira on neat, however it says on packaging to dilute?

[RAPressureWashing]

Thanks for the advice, I was putting the Mira on neat, however it says on packaging to dilute?

No use it neat, do not dilute