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Efflorescence - Removal and Prevention

Tue, Dec 23, 2008 0 0 345 0/5 (0 Vote)

Efflorescence - Removal and Prevention By Frederick M. Hueston www.stoneforensics.com The crystallization of soluble salts in Historic masonry causes severe deterioration of the substrate. This crystallization is called... Read More

Stained Sandstone

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Mon, Oct 26, 2015 Stained sandstone, grout stain, grout cleaner 0 0 773 0/5 (0 Vote)

Q. Hi. I recently had a patio laid in natural sandstone and my builders used a cement coloring in the pointing. When wiping down with wet sponges, they have left stains on the sandstone. What do you recommend? Is there anything we can do? Builders... Read More