Marble & Granite Care Products

This article is in response to a question from Carroll, that was received 6/10/08.

Uric acid from pet urine is quite potent, the uric acid etches the marble to a dull appearance and many times the texture of the marble surface will change from smooth to rough, and sometimes the color of the marble surface appears to contain a yellow tinge. For those of you, whose pets have urinated on your marble floor and damaged the marble, please don’t worry; our Marble Refinishing Kit contains everything you will need to restore your dull, etch stained marble to a brand new, highly polished surface.

The first step prior to refinishing your damaged marble, is to protect the undamaged marble area with plastic sheeting applied with duct tape; please note: allow an additional 2 inches of work area so that the machine can overlap the damaged marble surface with the finer sanding discs (overlap ½ inch per grit size). Next, start your honing process (sanding) with the 220 grit disc, followed by 400 grit, then 600 grit, and finish with 800 grit. Remember to overlap your work area by a half inch, each time you change a sanding disc grit. Remember to stop the machine every twenty seconds and clean the sanding disc with a wet sponge, check the sanding discs’ surface with your fingertips, it works best when you feel the abrasiveness of the disc. Please note: do not over use the sanding disc, when the face becomes smooth to the touch (it has lost its abrasiveness) it should be discarded and replaced with a new disc. For estimating purposes: one sanding disc should hone up to seven square feet of marble. For damaged marble that is completely dull and its surface texture is rough when touching the marble with finger tips, start the honing process (sanding) with 150 grit, and continue as specified in the aforementioned text.

After the honing process is completed, you can begin the polishing process using our Marble Gloss Restorer with our Ultimate Polishing Pad, is necessary to polish two and sometimes three times to achieve a brand new, highly polished look. Please note:

When polishing the following marble species: pure white (Thassos), dark brown (Breccia Nouvella), dark green (Verde Antique), and absolute black (Belgium Black) please call our professional sales staff at (800)-617-1779, to special order Marble Gloss Restorer SF (special formula); the mineral makeup of these marbles require a different chemistry to produce a high gloss finish, which is found in our Marble Gloss Restorer SF. When polishing marble with our Marble Gloss Restorer SF, you first make a slurry by mixing Marble Gloss Restorer SF with water, distribute the slurry over the area of marble to be polished, during the polishing process, it is normal for the slurry to dry quickly and you will notice a grabbing sensation from the machine which is caused by the friction created from using the Marble Gloss Restorer SF; do not add more water, polish this area dry for another minute or two; then, repeat this identical polishing process by adding more Marble Gloss Restorer SF mixed with water and polish the same area of marble one or two more times to achieve a deep, durable, high gloss finish.

When finished, rinse the new marble surface several times with clean water; then, remove the plastic sheeting and duct tape. If the duct tape leaves an adhesive residue on the marble surface, this residue is easily removed. Use a paper towel and a small amount of lacquer thinner, or acetone (also contained in nail polish remover). Do not use lacquer thinner, or acetone on painted areas or on polyurethane which is typically on hardwood floors; use instead, a small amount of our Marble Polish and Protector or our Granite Polish and Protector, applied with a paper towel; both of these products will remove adhesive residue from duct tape without damaging paint or polyurethane.

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Over the past 50 plus years, we’ve heard, seen, and come across many situations where our customers convey to us stories of doom and gloom when it comes to their damaged granite, grout, and marble.
Marble, granite, grout, limestone, travertine, other natural stones, are all extremely porous and their surface chemistry varies from species to species and many times can be quite problematic. There are so many maintenance products that can be purchased over the counter for cleaning, polishing, and sealing granite, grout, marble, travertine, limestone, and other natural stones that are either to high in alkaline or acidic, and customers rely too heavily on their labels advertising, not realizing the inherent danger in using these products.

This next section is dedicated to the discussion of granite. When it comes to selecting the appropriate material for kitchen countertops, island tops, table tops, and bar tops; bathroom vanity tops and shower walls; granite is an excellent choice. There are hundreds of granite species to choose from, all are quite hard (Mohs hardness scale) because of there mineral makeup of quartz and silicon dioxide, and are much more resistant to alkaline and acidic encounters than marble.

Some of the more popular misconceptions about granite are: to purchase granite instead of marble, because granite is indestructible; beware: both granite and marble will crack if not installed properly, the underside of the granite section located in front of the kitchen sink should always be reinforced with steel (rods/bars) to prevent breakage, it’s always best, to fabricate the granites’ outside edges to be rounded, next best, would be to bevel the granite outside edges, the least desirable granite edge would be square outside edges, because they will chip over time (especially the inner granite edges above the under mount sink, due to pots and pans, dinnerware and silverware). Most people think granite can not be scratched because it is so hard, they are 100% wrong, granite does scratch and the scratches can be eliminated by a resurfacing process (honing/sanding); but, the re-polishing process in the field has not been perfected yet. To re-polish the granite to its original factory finish (color, clarity, and gloss) in the field is extremely difficult and most of the time impossible because of physics and chemistry. Current technology for polishing granite in the field yields approximately 60% to 90% of the factory finish, depending upon the granite’s species, and the personnel’s equipment and experience. Concerning floors: we do not recommend using granite because of the aforementioned refinishing issues and exorbitant expense. Marble flooring is a good choice, the refinishing (resurfacing) process for removing scratches, stains, etchings and dull spots; then, restoring the factory finish (color, clarity, and gloss) to the marble’s surface in the field, is a proven technology. We sell marble refinishing kits which are all inclusive, easy to use, and economical.

Many people think granite does not stain, they are wrong. All granite species are porous and their porosity varies from granite species to granite species. Using harsh cleaners, abrasive pads and powders over time will dull the granite’s finish. Food and beverage spills, especially greasy foods and cooking oil will stain the granite’s surface. Many times, consumers are told by their sales person or installer that their granite was sealed at the factory or fabrication shop prior to installation. Beware: most granite factories and granite fabricators do not use a premium grade, deep penetrating (impregnating) granite sealer. We have tested over the past five years, granite sealers that supposedly come with a lifetime warranty. The test results are not favorable for two primary reasons: their chemistry does not allow the granite surface to breath, which will have a detrimental effect over time with the granites’ color, clarity, and gloss; secondly, these granite sealers change the granite’s appearance (giving the granite an artificial look).

Here’s some good news about granite: granite is so easy and economical to maintain. Using a granite cleanser routinely is a must, a credible granite cleaner should be formulated as follows: be neutral on the PH scale, so it won’t have a negative effect on the granite’s color, clarity, or gloss; be able to break through surface deposits and disinfect, have a pleasant smell. We recommend twice a year for kitchen granite countertops, island tops, table tops, and bar tops; bathroom granite vanity tops and shower walls, applying a premium granite sealer followed by the application of a premium granite paste polish. This process is so simple and fast to do, just like washing and waxing your car. For those of you, whose granite kitchen countertops are dull and dingy, maybe showing their age, don’t worry. Granite does not show its age, it took over a billion years for granite to be formed, and 99% of the time what is making your granite look dull and dingy is a surface film that has built up over time from not using a proper cleaning and spreading food and beverage spills over the granite’s surface because these spills were not removed completely from the granite’s surface initially. Another contributing factor might be the application of an inferior granite sealer. Many of our competitors sealers don’t have the ability to penetrate deeply into the granite’s subsurface and these inferior granite sealers contain a high concentration of polymer solids that stay on the granite’s surface. These polymer solids attach themselves to the granite surface and are extremely difficult to remove, plus they create a cloudy film which distorts the granites’ color, clarity, and gloss. We sell a granite maintenance kit which is all inclusive, really quick and super easy to perform; a typical kitchen with granite countertops takes about 1 hour of actual work time to clean, seal, and polish (you need to allow a minimum of 30 minutes for the granite sealer to penetrate) prior to polishing the granite; also, allow another 15 minutes of work time if you have a granite island in addition to your granite countertops.

In conclusion, remember to use common sense around your granite: don’t cut anything on your granite; don’t use harsh cleaners or abrasive powders on your granite; dedicate a section of a kitchen granite counter top as a food preparation area and have this food prep area covered with “butcher block” or plexiglass for example; be sure to pickup food and beverage spills as soon as they happen. Purchasing your granite was expensive, be sure to protect your investment and keep your granite looking brand new and beautiful (year round) by using proper granite maintenance products which clean, seal, and polish your granite. We welcome responses to our articles and will try to answer comments and questions in a timely fashion.

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