
"But what contractors and home decor guides may not tell you is that marble is also very porous, meaning liquid can seep into it and leave a stain unless it has a protective barrier. This comes in the form of a sealant, a liquid solution made to soak into marble and other natural stones and make them less absorbent and more stain-resistant."
"Thorough and consistent sealing is mandatory to make sure marble counters stay spotless and last as long as they should. Without it, substances like wine, coffee, sauces, oil, and even hard water can create unsightly blemishes that are tough to scrub away. If you can't remove the stains on your own, you might need to repair or replace your counter. Every homeowner should consider the upkeep before committing to marble countertops, especially because sealing it on your own isn't the simplest job."
Marble countertops offer a luxurious look and strong resistance to heat and scratching, making them suitable for food preparation. The stone is highly porous, allowing liquids like wine, coffee, sauces, oil, and hard water to penetrate and cause stains unless a sealant is applied. Sealants penetrate natural stone to reduce absorbency and increase stain resistance. The initial sealant should be applied during installation, and ongoing resealing is necessary, either by the homeowner or a paid professional. Failure to seal routinely can lead to stubborn stains, expensive repairs, or counter replacement.
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