Hello Partners, have a Shell Marbella limestone type stone paver tile that's sand set on south exposed patio. The install is 2 years old and a year into it the customer noticed a black stain that seemed to be coming from underneath the surface. It's know very pronounced in some areas (see attached photos). It's more obvious around the pool, especially the portion behind the pool which is always in the shade.I have sampled it with cleaners such as high ph cleaners, a degreaser, diluted bleach, algae cleaner and also agitated with brushes and a 240grit brush on a makita. It looks better only after scrubbing. This is problematic due to how soft the stone is.Wanting to find a chemical that reacts or breaks down the black stains.Sent from my iPhoneHone up to 3000 what are you polishing with?Sent from my Verizon Wireless 4G LTE DROID
Steve <steve@potomacstonecare.com> wrote:Thanks all...
Sent from my iPhoneHi guys,I'm posting question from our Partner.DougHello's team. I am working on an exotic quartzite countertop and I am having difficulty trying to get a high polish. Counter had etching and I used 1500 grit and powder polish which removed stains but some areas are not polishing up as high as customer would like. Any recommendations would be much appreciated. Thanks, steve
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