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

If you’ve worked on dolomitic marble before, you already know it’s not the same animal as your typical calcite marble. On paper, it looks like marble, feels like marble, and most homeowners call it marble, but when you put a machine on it... Read More

Maintaining Slip Resistance on a Granite Floor Granite floors can be slippery when wet. The amount of slipperiness can also be affected by the type of granite, the finish of the surface, and the presence of any substances that may reduce slip... Read More

Reusing a poultice powder for stain removal is not advisable, and here’s why. Fred Hueston, Chief Technical Director of Surface Care Pros and Owner of Stone Forensics explains, “I would not recommend the reuse of poultice powder.... Read More

A stain removal poultice is designed to dry completely before it is removed. If the poultice does not dry out, it may not be able to effectively absorb and remove the stain. Fred Hueston, Chief Technical Director of Surface Care Pros and Owner of... Read More

Graffiti Removal Procedure for Stone, Masonry, and Tile Surfaces By Frederick M. Hueston, www.stoneforensics.com If your beautiful building, wall, or other surface has just become the unintended canvas for graffiti, your first reaction might be to... Read More

When recrystallization is used on Thassos marble, yellowing can occur. The yellowing is probably caused by a reaction of the chemicals in the recrystallization product and the iron in the marble. Not all recrystallization products cause this... Read More

Recrystallization has been used to maintain granite and can prove very successful. However, when recrystallizing granite you are not reacting the recrystallization with the granite. The reaction taking place is simply placing a thin wax like coating... Read More

To answer this question throughly would require several pages. I would suggest you attend a formal training program to find out more about these differences. I will however give you some general differences. Recrystallization is a process which... Read More

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... Read More