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- limestone with mold / mildew stains in grout joints. Q. We have mold buildup in grout joints and surface has film on it. What is best to clean mold and remove film from surface? A. There are several cleaners that will remove the mold but you must be careful to choose one that will not damage the li... Read More
- What is the industry standard for cracks in a newly installed quartzite top? Q. Hello. I just received a new quartzite install, and there is a crack at the sink extending to the hole for the soap dispenser. The fabricator claims it does not affect integrity of the stone, since apparently it's not a full-depth crack. The ... Read More
- Does grout turn darker when wet and lighter when dry even with color seal? Q. Does grout turn darker when wet and lighter when dry even with color seal? A. Unsealed grout has tiny pores that absorb moisture, which can give unsealed grout lines a darker appearance. Once the moisture evaporates (assuming the moisture is no... Read More
- How to Remove Etch Damage from Improper Cleaners on a Marble Shower Q. I just finished putting in a new black marble shower wall, literally giving it its first cleaning. I had no idea that some bathroom cleaners would immediately etch into the marble finish. Please, for the love of God, tell me there is something... Read More
- How to remove stain on bathroom stone tiles Q. I hired a cleaner and she used limeaway with mold control from Clorox. And it appeared to have left white stains in my bathroom stone tiles. These don‘t wash away with water. What should I do? A. Unfortunately, this is not a stain that you a... Read More
- Efflorescence - Removal and Prevention 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 subfl... Read More
- Granite Edges Do Not Match Countertops [Fabrication Company] installed Kashmir Gold granite kitchen countertops in our home and the surface tops are yellowed and the bullnose edges are without yellow. We complained immediately during installation and they promised that their polish would... Read More
- Why is water not beading on grout lines after the grout has been sealed? Q. The unsanded grout used for our shower states it’s not necessary to seal grout. However, I decided to but notice the grout does not bead off the grout joints as I feel it should, even after 2 coats. A. You may be using a poor quality seal... Read More
- Sanded or Un-sanded Grout on Dimensional Stone Floors By: Mike Marsoun NuLife Stone Care (www.nulifestonecare.com.au) I have noticed an alarming trade practice here in Australia which desperately needs to be addressed. The root of this problem is the same as in the US where you will find ceramic ti... Read More
- What is the proper grout for exterior limestone walkway? Q. What is the proper grout for an exterior limestone walkway? Is there a dry grout that can be swept between the stone? Where would I look for stone dust? A. The proper grout will depend on how the stone is set. Will it be set in mortar or placed on... Read More
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