[pwaehner]

Hello Gentlemen and Ladies - I have a walkway that consists of Pennsylvania blue stone and pavers. It is very faded and stained and needs some restoration. Any recommendations on how to approach this job and or products to bring it back to life? Pictures are attached.

:sad:

Thanks in advance.

Phil

 

[huesmann]

You've tried power washing?

 

[pwaehner]

Hi - Thanks for your response. Yes this is after power washing and removing old crumbling polymeric sand. I think it may need some kind of acid wash but not sure what to do next.

 

[stadry]

could apply sealer but generally that's about it impo,,, no idea how pickling affects flagstone

 

[SPS-1]

This site says scrub bluestone with vinegar and water.

But I will suggest scrub with sodium carbonate/sodium percarbonate mixed at 1 to 1.5 cups per 3 gallons water. Some deck cleaners use those chemicals, but cheaper source is Oxyclean, or cheaper yet is generic oxyclean. Best is to spray it on with pump sprayer, let it sit for a 10-15 minutes, then get down on your hands and knees and scrub with a stiff brush and rinse thoroughly. Yes, the scrubbing is a lot of work. They say (at least on decks) don't let it dry on the surface being cleaned - re-apply as required to avoid drying.

 

[stadry]

TERRIFIC post,,, never knew,,, wonder how tsp would work,,, thanks VERY much !!!!!!!!

 

[pwaehner]

I purchased a 30% vinegar solution as a first step and will try a deep scrub with it. I will post some additional pictures with results. If that does not work I will try the Oxyclean recommendation. Thanks Again.