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I have a marble floor job that has several coats of polyurethane on it. I want to remove this coating and restore the stone to its original condition but the floor is located in a hospital and I cannot use any chemical that has a noxious odor.

There are several ways to remove polyurethane coatings without using strong odor chemicals. Space age technology has arrived and there are some new products on the market available for removing these coatings and some have no odor at all. These... Read More

I was called to remove a heavy wax coating on a granite floor. I’ve discovered that the janitorial company has been stripping and waxing this floor for several years. The problem is the granite is developing small pits and appears to be falling

The problem may be with the strippers that have been used. Many strippers have an alkaline pH and this can lead to the deposit of alkaline salts in the pores of the granite. If the stripper is not rinsed throughly and any stripper residue is left... Read More

Can cracks in terrazzo be repaired? How?

Yes, cracks can be repaired. Depending on the width of the crack, it can be filled with a polyester resin. If the crack is small, clean it thoroughly with acetone, making sure to remove all dirt; a dental pick may prove useful here. After the crack... Read More

How do you get the color back in a black absolute granite. I ground the tiles flat and used diamonds all the way to a 3000 grit as directed by the diamond manufacture. I have a good shine on the granite but it has a hazy white color and doesn’t

Polishing black granite is very difficult and requires a lot of patience and is very time consuming. Here are several suggestions which should help: Make sure you are using a granite polishing compound.* Marble polishing powders will not work on... Read More

How do I repair cracks in terrazzo?

Small cracks in a terrazzo floor can be repairs as follows: Clean the crack with acetone, making sure to remove all dirt, old wax and other debris. A dental pick is helpful in removing old wax buildup. After the crack is cleaned you will notice that... Read More

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