Clean grout well with soapy water using a toothbrush. Let it dry for 45 mins before applying sealer.
When shopping for grout sealer, consider penetrating and membrane-foaming types. The right one depends on tile type and location.
Proper applicator choice is crucial for effective grout sealing, considering factors like grout line thickness and tile sealing status..
Apply first coat of sealer, let it dry for an hour, then apply a second coat. Usually, 1-3 coats are needed for sufficient protection.
After second coat of sealer, test grout with water drops. If it doesn't bead up, apply third coat for better results.
Test sealed grout with water drops. If it doesn't bead up, apply a third coat for better results.