How to Protect a Marble
Choosing and Testing a Sealer
Buy an acid-resistant impregnator sealer. There are many different counter sealers out there to choose from. However, depending on the ingredients, some will be effective and others may cause damage. Read the label carefully and make sure to go with a sealer that is an acid-resistant impregnator. Stay away from the following:
- Citrus ingredients
- Surface sealers
- Linseed oil
Test the marble with water or mineral oil.
Sealing your countertop is probably the best way to protect it, but before sealing it, you should make sure it needs to be sealed. Put a few drops of mineral oil or water on your counter and leave it for a few minutes (4 minutes for the water and 10 for the mineral oil). Wipe up the liquid. If a dark spot or stain is left behind, then it’s time to seal your countertop.
- Don’t worry about the water or mineral oil leaving a spot behind; the liquid should evaporate within a half hour.
Clean the countertop with soap and water.
Once you’ve determined that your countertop needs to be sealed, give it a good cleaning. Clean the countertop using a clean, soft cloth, a mild soap, and warm water. Afterwards, dry the area thoroughly with a clean, dry cloth.
- Don’t clean your countertop with any harsh or acidic chemicals or products, such as bleach or lemon juice.
Read the instructions on the sealer’s label.
Before applying the sealer, it’s important to read and understand the manufacturer’s directions on how to do so. Different manufacturers require using different application techniques and amounts of sealer, depending on the type of stone as well as the type of finish.