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Travertine marble typically contains soft fillers that have a tendency to collect dirt. The black spots are probably dirt, and can be cleaned with heavy-duty cleaners. Apply a solution of cleaner and water and allow it to soak on the floor for... Read More

The sealer has left a hard silicone residue on the tile’s surface. To remove the excess silicone, the tile will have to be scrubbed with an abrasive cleaner. Several kitchen-type abrasive cleaners are available which will remove this film. If... Read More

The sticky substance is silicon residue, which can be difficult to remove. First, try cleaning the floor with mineral spirits and clean cloths. If this does not remove the silicon, then stronger solvents may be necessary. Suggested solvents may be... Read More

You should have a professional installer check the installation for soundness. It may have not been installed properly. The hollow sounding tiles is an indication that areas under the tile are not in contact with the setting bed. These hollow areas... Read More

You may want to recommend to your customer that having the edges rounded would help prevent further chipping. The edge can be rounded using a course diamond abrasive on a small electric hand machine. You can also put a profile on the edge using a... Read More

A string mop is preferable to a sponge mop. A sponge mop has a very small surface area, and can easily pick up sand and debris which will scratch the floor. It has been shown that after several swipes with a sponge mop, you are only spreading the... Read More

First, you need to determine what is causing the yellow cast. If a carpet was at one time placed over the terrazzo, the jute or rubber backing may have bled color into the floor, turning it yellow. If the floor was waxed, the waxes will have yellowed... Read More

It is very difficult to hone a granite floor without removing the lippage. If you do, the result will be an uneven shine. When granite needs honing and polishing the damage is relatively deep and will require starting with at least a 60 grit abrasive... Read More

The same problems with edges on marble also apply to granite. See question #62. Try to avoid edges when polishing grnite, it can be very time consuming and very hard work. It may prove difficult to feather into the edge when polishing granite. If you... Read More

Diamonds and bricks both work well on granite but the final results will depend on the skill of the operator. Generally bricks require the use of an Italian grinding machine and a much higher degree of skill than diamonds. Diamonds are much easier to... Read More