I purchased CH Concrete Cleaner to remove built-up dirt and algae from a limestone walkway and a concrete pad. I sprayed the Concrete Cleaner on both using a hand pump, garden sprayer. It was easy. Pour the Cleaner into the sprayer, sprayer its on the surface you want to clean, wait 10 to 15 minutes and rinse off the Cleaner.
I found I had to put on more than I expected to keep the surface wet because the cleaner dried after about 7 or 8 minutes. Limestone is porous and concrete even more so. Consequently, I used more of the Cleaner than I expected. Also, I found using a pressure washer to rinse off the Cleaner worked much better than rinsing with a garden hose. Good luck with your project.
I purchased CH Concrete Cleaner to remove built-up dirt and algae from a limestone walkway and a concrete pad. I sprayed the Concrete Cleaner on both using a hand pump, garden sprayer. It was easy. Pour the Cleaner into the sprayer, sprayer its on the surface you want to clean, wait 10 to 15 minutes and rinse off the Cleaner.
I found I had to put on more than I expected to keep the surface wet because the cleaner dried after about 7 or 8 minutes. Limestone is porous and concrete even...
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