GranSeal is a one-time application sealer for granite and stone products with a 15-year limited warranty. Standard sealers offer little or no warranty against stains and have a shorter protection period than GranSeal.  What makes GranSeal different is that it’s an impregnator type of sealer.  Impregnator sealers have nano-sized solvents and protective agents which allow the chemical to penetrate deeper into the stone and, therefore, provide a longer duration of protection:

  • GranSeal can be used on all stone surfaces

  • Excellent product for interior, exterior, honed or leathered stone.

  • Test “food safe” and is safe to use on and around food prep areas.

  • Penetrates deep into the stone for excellent protection of countertops.

  • Needs no annual sealing.

  • GranSeal is ready for use on the day of the installation with only a three-hour drying time for the final on-site application.

  • Resistant to UV radiation

  • 15-year Limited Warranty



15-year limited warranty against food and beverage staining:


  • The GranSeal 15-year limited warranty provides that GranCo will repair or assist in repairing any stains caused by food or beverages.

  • Should a customer have a stain on their countertop then GranSeal will discuss what caused the stain and determine how to resolve or repair the stain.

  • In the event a countertop can not be repaired GranCo will make the final decision as to the countertop replacement.


* Plumbing and electrical accommodations are the responsibility of the homeowner.