Efforescence

[footprints]

I am laying a new area of cement paving Brindle riven on a solid bed of sand cement 1 to 6 mix.
The slabs have very bad staining where they have stood awaiting laying streaks have formed and to be frank my new paved area is going to look ****e till mother nature get off her butt and starts weathering them.
I contacted the makers Cemex and to be fair the reply was to be expected, time will heal!
They advise against using anything stronger that soapy water and a stiff brush, which helped not a jot. Any suggestions which will not damage the finish would be very welcome please.

 

[blup]

Our neighbours wall has had efflorescence in it since built 20 years ago, not convinced it will automatically go with time.

Blup

 

[footprints]

Our neighbours wall has had efflorescence in it since built 20 years ago, not convinced it will automatically go with time.

Blup

 

[footprints]

Update, I found scrubbing the slabs with a wet microfibre cloth seems to work quite well while I was removing a couple of cement splashes!
It is starting to weather a bit already.