10 Best Marble Sealers 2021

Simply beautiful! That’s the effect you get when you use marble for surfaces in your home. The array of colors and patterns is astounding – from solid black to solid white and every color in the spectrum. What’s more, no two are ever alike!

Marble is porous, however, and can be stained by liquids seeping into it. The best marble sealer can help to prevent that. While the sealer will not make the marble shiny and will not fill pits or smooth out uneven spots, it will help you enjoy the beauty of your marble surfaces for much longer.

If you are looking for a really great marble sealer, we have the top 10 already picked out for you!

Marble Sealer Facts You Should Know Before You Shop

Over time, some liquids cause staining and damage to the marble. Sealers work by stopping these liquids from soaking into the marble.

  • Marble Sealers Are Impregnator Sealers. Marble sealers are a mixture of solvent (usually water-based) and resin. The solvent seeps into the pores of the marble and the resin clogs the pores, sealing them after the solvent evaporates.
  • Marble Sealers Need Time. When you pour sealer on unsealed marble, it is absorbed very quickly. It will take a few cycles of applying the sealer, waiting for the recommended drying time, and then applying more sealer before you achieve the maximum sealing effect.
  • Marble Sealers Help Prevent Stains. Since the sealer has blocked the marble’s pores, there is very little to no room for liquids to get in and stain it.
  • Marble Sealers Will Not Stop Etching. Sealed marble is not impervious to either scratching or etching. Etching are marks on marble caused by acidic substances such as orange juice and lime juice.

Top 10 Marble Sealers Comparison Table

PictureNameVolume Price Rating (1-5)
Picture
Name
Volume
Price
Rating (1-5)
1. Rocklinite Labs Tuff Duck Granite, Grout and Marble Sealer 1 quart$$4.4
2. Miracle Sealants PLUS QT SG 511 Porous Plus Penetrating Sealer 1 quart$$$4.5
3. DRY-TREAT Stain-Proof Plus Premium Impregnating Sealer16 ounces$$$4.6
4. Aqua Mix Sealer's Choice Gold 1 quart$$$4.6
5. TriNova Granite Sealer & Protector 18 ounces$4.5
6. Stone Care International Granite Sealer and Protector 24 ounces$4.5
7. Granite Gold GG0036 Granite Gold Sealer, Preserver & Protectant 24 ounces$4.5
8. Miracle Sealants 511 QT SG 511 Impregnator Penetrating Sealer 1 quart$$4.5
9. Black Diamond Nex-Gen Natural Stone Penetrating Sealer 16 ounces$4.4
10. StoneTech BulletProof Sealer 1 quart$$$4.4

What Should I Be Looking for in a Marble Sealer?

The best marble sealer brands go beyond simply sealing the pores of your marble surfaces. Here’s how to tell if you have a sure winner!

  • Low to No VOCs. Volatile organic compounds (VOCs) are released from many different sources and can lower indoor air quality. Seek out marble sealers that have low to no VOCs and are more environmentally friendly.
  • Certified Safe. Mable countertops grace many food preparation areas. For this reason, your choice of marble sealer must meet the requirements of regulatory bodies and be certified safe for use.
  • A Solid Warranty. Top-quality marble sealers will normally offer a warranty of 10 years or more. The manufacturer may, however, require that you use an authorized installer. Otherwise, the warranty may be shorter or void.
  • Resistant. Obviously, a good marble sealer should not stain your marble. It should, however, be adhesion tested and acid resistant, as well as, heat resistant.

Top 4 Best Marble Sealer Reviews

1. Rocklinite Labs Tuff Duck Granite

As expected, the Tuff Duck brand from Rocklinite Labs takes top spot as the best marble sealer on the market. This impregnator sealer has a non-acidic formula and will not alter the lovely natural appearance of your marble surfaces.

The Tuff Duck Granite, Grout and Marble Sealer works on both interior and exterior marble surfaces. To get the very best results, you are advised to reapply this sealer annually. Regardless of that, its protective power can last up to 3 years on exterior surfaces.

If used on interior marble surfaces, you can look forward to up to 5 years of protection from Tuff Duck Granite, Grout and Marble Sealer.

Reviewers express general satisfaction at how well this sealer keeps liquids out of the marble surfaces they have applied it on. A single coat of Tuff Duck Granite, Grout, and Marble Sealer is enough to give your marble the protection it needs.

That’s because this marble sealer is formulated with a high concentration of the active ingredient.

Pros
  • Does not alter the natural appearance of your marble surfaces
  • Last up to 5 years on interior surfaces
  • Last up to 3 years on exterior surfaces
Cons
  • Has a strong odor

2. Miracle Sealants Porous Plus Penetrating Sealer

Miracle Sealants Plus is a professional-grade marble sealer, and definitely, one you can rely on to give your marble surfaces the protection they need.

Did you know that elements of the weather can damage your marble? This sealer takes that into consideration and is designed to be weather resistant and UV transparent.

Applying the Miracle Sealants Plus to a marble surface will not affect the surface’s natural appearance. It is easy to apply and can be used on both interior and exterior marble surfaces, including those intended for food preparation.

The manufacturers also assure purchasers that the Miracle Sealants Plus will not just make surfaces tougher but also less slippery.

The Miracle Sealants Plus is marketed as a “new and improved” version of a previous one. It shows it by being at the pricier end of the scale. Reviewers, however, generally think it’s worth the price tag and enthusiastically give it high marks in terms of its ability to resist stains.

Pros
  • Does not alter the natural appearance of your marble surfaces
  • Weather resistant and UV transparent
Cons
  • A bit pricier than other sealers

3. DRY-TREAT Stain-Proof Plus Premium Impregnating Sealer

If you have no desire to seal your natural stone or marble countertops every year, then DRY-TREAT Stain-Proof Plus is the sealer for you. It provides a permanent, bonded seal that lasts for years.

It comes in a white, plastic bottle containing 16 fluid ounces of liquid.

The sealer is easy to apply. Before applying the sealant, be sure to clean the surface area.

We recommend applying one coat, wait 10 minutes, and apply another coat. You should repeat this process one or two more times. Do not touch the surface for 24 hours to let it seal.

The sealer does not change the color or look of your marble. It protects against water and oil-based staining.

The sealer does have a strong odor so have good ventilation by opening your windows.

Pros
  • Easy to apply
  • Does not change the color of the marble
  • Protects from water, salt, and oil
  • The sealer works on basalt, bluestone, concrete, and quartzite countertops
Cons
  • Has a strong odor

4. Aqua Mix Sealer’s Choice Gold Quart

Aqua Mix 30882-4 Sealers Choice Gold has truly earned its place among the top three! This elite marble sealer dries in less than 4 hours once applied, and its protective properties can last up to 15 years.

The Aqua Mix 30882-4 Sealers Choice Gold’s water-based formula has a low VOC content and is safe for use in areas where food is being prepared.

It is formulated to penetrate marble surfaces without staining and will not leave a sheen. Your marble retains its natural look while enjoying maximum stain protection.

While generally pleased with its ease-of-use and performance, some reviewers warn of a strong odor and waxy feel caused by this sealer.

Pros
  • Dries in less than 4 hours
  • Last up to 15 years
  • Safe for use in areas where food is being prepared
Cons
  • Has a strong odor

Frequently Asked Questions

Should Marble be Sealed?

If you want to preserve the quality of your marble, the Natural Stone Institute recommends sealing marble with a quality sealer. Protect your investment by applying a marble sealer.

What Happens if You Don’t Seal Marble?

If you don’t seal your marble, you may encounter serious issues such as shifting tiles, cracks, and marble displacement. You will also have a higher probability of growing mold or mildew behind the tiles.

How Long Does Marble Sealer Last?

It depends on the stone and the finish. Some sealants require reapplying every year. Other sealants need to reapplied every 3 to 5 years.

Does Marble Need Grout?

If you’re laying a marble floor, you don’t need grout if the layout is perfectly square. However, this isn’t recommended because you won’t have room to fix any problems in the grout joints.

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