Is sealing marble expensive?
Sealing marble is relatively inexpensive as a DIY project. A good-quality marble sealer typically costs between $20 and $50 per bottle, which can cover an average kitchen’s worth of countertops. Professional sealing services cost more (usually $200-$500, depending on square footage) but include proper preparation and application.
Can you seal marble so it doesn’t stain?
A good sealer will significantly reduce marble’s susceptibility to staining, but no sealer provides 100% protection.
Even properly sealed marble can still stain if spills (especially oils, wine, or acidic substances) are left sitting for too long.
Sealing creates a barrier that slows liquid absorption, giving you more time to clean spills before they penetrate the stone – but prompt cleanup remains essential.
The best protection comes from:
- Using a high-quality penetrating sealer
- Reapplying sealer as recommended (typically every 6-12 months)
- Still being vigilant about cleaning spills promptly
Marble Countertop FAQ: The Complete Care Guide
General Questions
What is marble made of?
Marble is a metamorphic rock composed primarily of recrystallized carbonate minerals, most commonly calcite or dolomite. It forms when limestone is subjected to heat and pressure over time, causing the stone to recrystallize.
How long do marble countertops last?
With proper care and maintenance, marble countertops can last 20+ years.
However, they will develop a patina that many consider part of marble’s charm and character over time.
What are the different finishes available for marble?
- Polished: A Smooth, glossy finish that highlights the stone’s color and veining
- Honed: Matte/satin finish with less reflection; hides etching better
- Leathered: Textured finish with a natural, slightly rough feel
- Brushed: Soft, worn appearance with some texture
Staining & Damage
What causes stains on marble?
Marble is porous and can absorb liquids if not properly sealed. Common staining agents include:
- Oil and grease
- Wine, coffee, and fruit juices
- Makeup and cosmetics
- Plant material and soil
- Ink and dyes
What causes etching on marble?
Etching occurs when acidic substances react with the calcium carbonate in marble, dissolving the surface slightly and leaving dull marks. Common culprits include:
- Citrus fruits and juices
- Vinegar and vinegar-based cleaners
- Wine and alcoholic beverages
- Tomato sauce
- Some cleaning products
Does water leave marks on marble?
Yes, water can leave marks on marble, especially hard water with mineral content. When water evaporates, it can leave behind minerals that appear as spots or rings on the surface.
Can marble be scratched?
Yes, marble ranks around 3-4 on the Mohs hardness scale (out of 10), making it susceptible to scratches from metal utensils, abrasive cleaners, and everyday items.
Can heat damage marble?
While marble is relatively heat-resistant, sudden extreme temperature changes can cause thermal shock, potentially leading to cracks. Prolonged heat exposure can also damage the sealer.
Sealing
Why does marble need to be sealed?
Marble is naturally porous and will readily absorb liquids, leading to stains. Sealing creates a protective barrier that slows liquid absorption, giving you time to clean spills before they penetrate the stone.
What happens if you don’t seal marble?
Unsealed marble will:
- Absorb liquids much more quickly
- Stain more easily and permanently
- Be more vulnerable to etching
- Deteriorate faster
- Require more frequent professional restoration
How often should marble be sealed?
Most experts recommend sealing marble countertops every 6-12 months, depending on use. High-traffic kitchens may need resealing every 3-6 months.
How can I tell if my marble needs resealing?
Perform a simple water test: Place a few drops of water on the marble. If the water beads up, the seal is still working. If the water absorbs within 10 minutes, it’s time to reseal.
Is sealing marble expensive?
DIY sealing typically costs $20-$50 per bottle of sealer, which can cover an average kitchen. Professional sealing services range from $200-$500 depending on square footage.
Can you seal marble so it doesn’t stain at all?
No sealer provides 100% protection. Even properly sealed marble can still stain if spills aren’t cleaned promptly. Sealing gives you more time to clean spills before they penetrate and stain the stone.
Cleaning & Maintenance
What is the best daily cleaner for marble?
For daily cleaning, use:
- Warm water with a soft cloth
- pH-neutral, marble-specific cleaner
- Mild dish soap (sparingly, well-diluted)
What cleaning products should never be used on marble?
Avoid:
- Vinegar, lemon, or any acidic cleaners
- Abrasive powders or creams
- Bathroom cleaners
- Bleach
- Ammonia
- Generic all-purpose cleaners (most are too harsh)
How do I clean spills on marble?
- Blot (don’t wipe) the spill immediately
- Clean with warm water and a soft cloth
- Dry thoroughly to prevent water spots
- For stubborn spills, use a marble-specific cleaner
How do I remove existing stains from marble?
Different stains require different approaches:
- Oil-based stains: Poultice with baking soda and acetone
- Organic stains: Poultice with hydrogen peroxide and baking soda
- Rust stains: Use a Commercial rust remover specifically for marble
- Water spots: Buff with dry 0000 steel wool (very gently)
What is a poultice, and how do I use it?
A poultice is a paste applied to draw out stains from porous surfaces:
- Mix absorbent material (baking soda, kaolin, etc.) with an appropriate solvent
- Apply 1/4″ thick over the stain, extending slightly beyond it
- Cover with plastic wrap, and tape down edges
- Leave for 24-48 hours
- Remove, rinse, and repeat if necessary
How do I restore the shine to dull marble?
- For light dulling: Use a marble-specific polish
- For minor etching, Try a marble polishing powder
- For significant damage: Consult a professional for refinishing
Living with Marble
How can I protect my marble countertops during everyday use?
- Use cutting boards for food preparation
- Place coasters under all drinks
- Use trivets or hot pads under hot dishes
- Clean spills immediately
- Use placemats under cosmetics in bathrooms
- Avoid dragging rough or heavy objects across the surface
Is marble better in some rooms than others?
Marble requires more maintenance in kitchens, where exposure to acidic foods and frequent use creates more opportunities for damage. It tends to fare better in:
- Bathrooms (except around cosmetics)
- Fireplace surrounds
- Low-traffic areas
Should I choose a different countertop material instead of marble?
If you:
- Cook frequently with acidic ingredients
- Have young children
- Are unwilling to perform regular maintenance
- Prefer pristine, unchanging surfaces
Consider alternatives like:
- Quartz (engineered stone)
- Granite
- Quartzite
- Porcelain
Is the patina on marble desirable?
Many marble owners appreciate the patina that develops over time as part of marble’s character and charm. This subtle aging process gives marble its distinctive lived-in look that cannot be replicated. However, this is a matter of personal preference.
Professional Services
When should I call a professional for my marble countertops?
Consider professional help for:
- Initial installation
- Annual maintenance
- Deep stains that home methods can’t remove
- Significant etching, scratching, or dulling
- Cracks or chips
- Repolishing or refinishing
How much does professional marble restoration cost?
Professional marble restoration typically costs:
- Light polishing: $200-$500
- Removing severe etching: $300-$800
- Repairing chips or cracks: \$200-\$600 per occurrence
- Complete refinishing: $15-$40 per square foot
How can I find a reputable marble professional?
Look for:
- Natural stone specialists rather than general contractors
- Certification from stone industry organizations
- Positive reviews specific to marble work
- Detailed written estimates
- Examples of similar completed projects
- Warranties on their work
