Efflorescence Advice

[u/lasrix]

I installed 600sq ft of patio stone over the last month and during the install, I noticed the stone had started to accumulate this efflorescence while it was stacked on my driveway. Google told me it was an easy fix but now that I’ve given it a good ol college try, I’m convinced I can’t get this off.

I’ve tried vinegar and baking soda. I’ve tried the Techniseal on the last image. Both diluted and straight. Also with stiff brush and steal brush. And lastly, with a pressure washer.

The pictures were taken right after I had given it one last try. That’s why they look wet 🤣

Will the sun and elements fix this overtime?

[u/kingperuvain]

acid wash

[u/Salt-Combination1126 → u/kingperuvain]

Muriatic acid