Stone Countertop Discoloration: Staining vs. Etching
Owners of stone countertops may notice various discolorations on the counter surface over time, caused by a number of factors. These blemishes can broadly be classified as either staining or etching, and each has its own preventative measures and repair methods. Therefore, it’s important to know what kind of discoloration you are dealing with, and which steps to take to both protect your stone countertops and fix any existing damage.
Staining: The porosity of natural stones varies greatly, and so does, of course, their absorbency. We seal our products during installation to help prevent staining; however, this process does not make the stone 100% impervious to liquid. Some stones may absorb liquids, and if such liquids are staining agents, a stain might occur. A stain is usually darker than the stained material, while the surface finish of the stone remains smooth.
Etching: Other “discolorations” have nothing to do with the porosity of the stone, but rather are a result of damage to the stone surface. If the discoloration appears to be lighter in color (may look like “water spots” or “water rings”), it is probably an etch mark. An etch mark is a chemical burn that forms when acid, ammonia, or alcohol comes into contact with the calcium carbonate element that exists in certain natural stones. These marks look like the finish or the shine has been removed from the surface of the stone. The area that is etched can feel a little rough to the touch. Etching is most common on marble, quartzite, travertine, onyx, and limestone surfaces.
GOOD NEWS! Stains can usually be removed and most etch marks can be repaired. Just give us a call! Our skilled craftsmen are specially trained to repair your stone and protect your investment.
The measurements were exact, the countertops fit perfectly and the workers were courteous and cleaned up after themselves. I would definitely use them again as well as recommend them to anyone. Mary M. – Delmar, NY
We had a Tremendous experience here today! Thank you to Mary Lou for your friendly service. We’re looking forward to our new kitchen counter tops! Can’t wait! If you’re in the market, this is the place to go! Bob P.
Raymond from Granite & Marble Works just left my home after resealing my granite. He was the nicest man and did a superb job!!! My counters look brand new again. Tina M. – Saratoga Springs, NY
All went well..met all time frames for viewing stone, preparing template, all installation. Had all accessories available for purchase..well coordinated very cordial and accommodating staff. Larger inventory than others and vast showroom space. Well-run local business. Virginia H. – Mechanicville, NY
Love my new laundry and pantry countertops. Very professional, accommodating and well trained staff! Highly recommend! Kimberly B. – Greenfield, NY
Great professional service for new kitchen countertops. Margaret made the entire process from selecting the granite to installation extremely easy. Would definitely recommend Granite & Marble Works!” Christian J. – Slingerlands, NY
Excellent. The sales person was extremely helpful and worked to stay within our budget without any pressure to pick a granite that was able our budget. The installers were timely in their arrival, worked efficiently and cleaned up after themselves. Mary M. – Slingerlands, NY
They were a pleasure to work with. Their facility is very large and they have a large inventory of stone of all kinds. They use computerized measuring equipment to provide exact specifications for the stone cutting. Installation was timely. Everyone there was polite, helpful, patient, and professional. The outcome is beautiful. Paul L. – Wilton, NY