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We installed a marble shower wall, and the contractor used an acid to clean it. We had it professionally repolished, but it keeps getting etched after we take a shower. What’s causing the etching and how do we correct it?

I will assume you are not cleaning it with acid cleaners. There is a possibility that there is some residual acid in the grout or the pores of the stone that bleeds out when you take a shower. Try rinsing the shower wall with a solution of baking... Read More

Is it safe to use an acid to clean a flamed finish granite?

All acids should be used with caution on any stone surfaces. Granite is one stone type where most acids will not harm it. However, stay away from hydrochloric acid (HCL). HCL can deposit salts in the granites pores if not rinsed throughly. I would... Read More

I have a maintenance account that has twelve mens restrooms that all contain a white Italian marble. There is a constant problem with urine stains at the base of all the urinals. What, if anything, can I apply to the marble to keep it from staining?

There are numerous products on the market that will repel water and oil. Unfortunately urine is an acid and currently there is no product on the market that will repel acid. My advice would be to apply a good quality oil-repellent impregnator and to... Read More

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