Hello everyone, I have a question that seems easy to answer but actually isn’t that simple. Last year we paved everything and then brushed yellow sand into the joints for compaction. We had the sand left over from the house construction. Now the stones look like they were freshly blasted from a quarry. I have cleaned them once with a pressure washer and swept them ten times. No change. Even using the full jet on the pressure washer doesn’t completely clean the stones. Scrubbing doesn’t make much of a difference either. Even a surface cleaner attachment on the pressure washer doesn’t help. The stones no longer look like the original ones; they are much lighter and just dirty.
What do you recommend to remove the sand but without damaging the stone too much?
I keep thinking about a cement film remover, but isn’t that quite aggressive?
What do you recommend to remove the sand but without damaging the stone too much?
I keep thinking about a cement film remover, but isn’t that quite aggressive?
guckuck2 schrieb:
If you used "yellow" sand there, the issue is basically settled. That stuff stains heavily and you won’t get it out. It has too much clay content.
Water pushes it out, and the mixture sets firmly. Concrete is open and porous, so it will have been absorbed. Nothing can be done anymore! That is definitely possible.
On our street, yellow sand was used everywhere for filling to prevent weeds from growing. Why it is so severe on our property but not on others can have many reasons.
I will still try to clean the stone. If I get a result somewhere between the current state and new, I will be satisfied. I plan to try different cleaning agents that won’t excessively damage either the stone or the environment.