Can anyone offer any suggestions for the following problem?
Paving (concrete pavers) have been relaid after being taken up so tree roots underneath could be removed. Instead of filling with just sand, the contractor has used a mixture of sand and cement on the basis that it will last longer and be resistant to weeds growing in the cracks etc.
He did a couple of small paths as a trial, sponging it off straight away and it was very successful. Said he could create the same effect over the main large paved area, including all around the pool and garden beds.
However, he swept the mixture over then went away and left it for two days, during which time there was a lot of rain. Result is that there is now a white/grey horrible looking coating over the whole paved area (pavers are/were shades or brown and grey). He has broomed over and then rinsed off 50/50 hydrochloric acid and water and this has had no effect whatsoever in removing the mess.
Any suggestions at all for how to get it off? If it can't be removed, is it reasonable for him to have to take up and turn over each paver so that the undamaged underside is on the surface?
One suggestion from a friend has been to cover the whole area in a tinted sealant but I imagine that might look "painted" and artificial. Anyone used a tinted sealer?
Any suggestions would be very much appreciated as the present appearance is simply hideous.