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Step 1
Choose the right kind of grout to match your tile. The best way to choose the right grout is to take a piece of the grout from your kitchen with you when you purchase or take an extra tile with you to match if you want to change grout colors.
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Step 2
Remove and clean away the existing grout from your countertop using a grouting saw to cut and remove any loose bits of grout. Make sure no loose material is left between your tiles or it could cause the new grout to crack and break apart.
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Step 3
Dampen the grooves between the tile with a wet rag. Moisture is important to make sure the grouting mixture sticks to the tiles. The areas should be damp, not soaking wet.
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Step 4
Mix the grouting powder according to the manufacturer's instructions to form a workable, thick paste.
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Step 5
Use a grout float to spread the grout mixture evenly over all of the tile grooves that need filling. Wipe over them with a wet finger to smooth the grooves of grout.
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Step 6
Wipe away excess grouting mixture from the tiles with a damp grout sponge. Don't wipe an area too many times or you may accidentally wipe away the grout between the tile grooves.
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Step 7
Inspect the countertop carefully for any gaps along the edges of the tile grooves once the grout dries. Grout shrinks when it dries, so if you see any gaps, simply re-apply grout to the affected area.
