By Interstone Marble and Granite Limited
Hello!
Thank you for the great question!
Generally speaking you should seal your counter tops once every 12 months, and the process takes just a few hours; 10 minutes to apply sealer, let it dry for 2 to 3 hours, and then buff for 10 minutes.
The product we personally recommend using is "Fila MP/90."
If you have any further questions please feel free to ask.
Kindest regards,