The Best Stone Sealer for Limestone, Marble, Travertine, Slate, Granite And Other Stone Tiles And Slabs

All stone tiles and slabs should be sealed to protect them from becoming stained.  A high quality stone sealer needs to have a small molecular structure to penetrate deep into dense stone tiles. A good stone sealer must also be resilient to everyday cleaners and contaminates and not break down over time. Stone sealers should keep dirt and stains from absorbing into the stone so that these contaminates can be cleaned up without being absorbed by the stone.

All stone sealers have limitations to how well they can preserve and protect stone tiles and slabs.  Most stone tiles like limestone, travertine and marble are acid sensitive. These acid sensitive stones will etch when they come in contact with acidic substances like cleaners or acidic foods such as vinegar or lemons. There are no sealers that will prevent acid sensitive stones from etching when they come in contact with acidic substances. A high quality stone sealer may be able to lesson then effects of etching or give you a few seconds to wipe away any acidic substances before the acidic substances etches the stone.

red wine, mustard, oil and hot sauce stains on stone

When testing stone sealers we tested them for durability and resistance to some common food stains.  We first sealed our stone samples and then we boiled them in water. Then we cleaned the samples with a common Ph neutral stone cleaner to test the durability of the sealer. We then applied some common food contaminates to the stone samples and allowed the contaminates to dry on the stone samples overnight. We then cleaned the contaminates off the tiles and checked to see how well the sealers performed in keeping the contaminates from staining the stones tiles.

In our testing we found the StoneTech Bulletproof sealer as well as the Drytreat Stainproof sealers worked best for sealing the stone tiles.  The Stonetech Bulletproof is a water based sealer with the latest microbond technology that penetrates deep into the stone to provide maximum protection for the stone. The Drytreat Stainproof is a much higher VOC solvent based sealer that is also the most expensive sealer tested. These two sealers also worked well to seal any grout between stone tiles.

stain resistance of stone sealers

Properly sealing grout and stone tiles requires carefully following the manufactures instructions.  Improperly sealing your stone and grout can ruin a perfectly good tile installation. You can read more information about how to properly seal grout here. You may want to consider hiring a professional tile cleaning and restoration contractor to seal your grout for you. You can read more about how to hire a tile cleaning and restoration contractor HERE.


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