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How to Seal Marble & Granite Countertops

We recommend sealing marble and granite countertops twice annually.  The reality is you can never over-seal your stone.  Frequent sealing provides constant protection against most oil-based stains and the same is true for water-based stains such as tea, wine or coffee. 

Water should bead on stone surfaces, indicating the protective seal is working. To check your stone, pour water (about 3 inches in diameter) on the surface in several locations and let it sit for 30 minutes. If you see a dark mark or ring, the water is penetrating the stone and it’s time to reseal. 

One of the most common products on the market is Granite Gold Sealer®. It contains no harsh chemicals. It is both safe and easy for the average user to apply. It’s literally a spray-and-wipe solution.

In six simple steps, here’s how to seal granite, marble and all other natural stone for about 10 percent of the cost of having a pro come do it for you:

  1. Make sure you thoroughly clean the surface with a safe-on-stone granite cleaner.  Granite Gold makes a cleaner (approx. $6).
  2. Spray Granite Gold Sealer on the surface in a 3-foot section.
  3. Immediately wipe into stone with a lint-free cloth. Do not allow sealer to dry on the surface – it will cause hazing.
  4. Buff dry with a lint-free cloth.
  5. For maximum protection, repeat the process 2-3 times.
  6. Wait 24 hours for sealer to cure before using a granite polish such as Granite Gold Polish® to add shine and luster.

Note: Using Granite Gold products is just a suggestion. There are other products available at most home improvement stores.