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We have an old terrazzo floor that has been covered for years with wall-to-wall carpet. We want to remove the carpet, but it is held down by tack strips which have been nailed into the terrazzo. When I tried pulling up one strip, large chunks of the

The tack strips can be removed by cutting the nails flush with the terrazzo. A hack saw blade can be wedged under the wooden strip and the nail can be cut. A faster method would be to use a diamond saw blade mounted on a rightangle grinder. The shaft... 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

I applied a water based penetrating sealer to a marble floor and it left a very thin film on the surface that has a rainbow color to it. I have tried everything to remove it and it won’t budge. How can I remove this film?

This is a common problem with water based impregnators that contain sodium methylsiliconate. The film can only be removed by re-polishing the floor with polishing powder and a buff colored pad. If the film is real thick it may need to be honed off.... 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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