Depending on how often you use the countertops and how light or dark the granite is you may need to seal it anywhere from every three months to yearly.
Resealing granite seams.
To test your surface leave a few drops of water or a wet paper towel on the granite for 10 to 15 minutes doing this in an inconspicuous area.
Consult a trusted countertop company for guidance on how often to seal your countertops.
Nonetheless granite experts recommend waiting a full 48 hours before wiping a newly sealed granite countertop with anything wet.
Seams are typically hidden in places where they would be less noticeable such as next to a sink or refrigerator.
Test whether the granite needs sealing.
Although you may find that many countertops do not require being sealed applying a sealer is common practice.
Stick each pair of suction cups on either side of the granite seam.
We have dark granite countertops i think called ubatuba that were installed in our kitchen when our house was built in 2003 there is one major seam between two slabs on the l shaped main.
Think of it as placing 2 or 3 bridges over the seam with each turnbuckle serving as the bridge span and the suction cups as the bridge piers.
Sealers at home improvement stores cost around 15.