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Best Countertop Sealer (2019): Reviews and Comparison

  • July 7, 2019
  • / By Dale Keese
Countertop and Sink

Countertops made from natural stone offer excellent surfaces that are convenient and durable to use every day and they also add a lot of warmth and beauty to the ambiance of your home. The blend of functionality and aesthetics allow you to have a kitchen that is very efficient, low maintenance and extremely attractive. With proper maintenance and care, your countertops can last for a lifetime.

Countertop and Sink

Natural stone is available in a wide variety of patterns and colors and each stone has its own features and texture that requires specific maintenance. However, it is generally recommended that you clean your countertops regularly and mop up spills as soon as they occur irrespective of the type of stone used for the countertop. You must also be very careful in choosing proper products and techniques to polish and protect the different stone countertop surfaces.

Top 11 Reviews of the Best Countertop Sealer

While some techniques and products may offer the best results and maximum protection for certain stone types, they may not be sufficient or appropriate for others. Selecting an appropriate sealer for natural stone is important but quite a controversial topic.

Best Granite Countertop Sealers

Granite

TriNova Granite Sealer

The granite sealer from TriNova is our top pick because of its top-notch features. The granite sealer offers superior protection for countertops made from other materials too such as marble, soapstone, quartz, quartzite, etc. The 2-in-1 granite sealer acts as a sealer and a protectant for all types of surfaces.

Made from a blend of polymers, the advanced formula of the TriNova granite sealer penetrates the porous surface of the stone easily and protects your granite countertop from water spots, marks and stains caused by oils, soap, etc. by preventing the stains from being absorbed and becoming permanent.

The granite sealing liquid comes in a bottle that has an extra-long applicator tube that makes it easy for the sealing agent to reach all corners of the countertop easily.   TriNova granite sealer is a long-lasting quick application and drying sealer that will save you a lot of time and effort to reapply the sealer time and again.

TriNova Granite Sealer and Protector

Source: goldeagle.com

OUR RATING

Features

  • 18 oz sealing liquid  
  • Suitable for use on granite, marble, quartz, soapstone and quartzite
  • Advanced action stain protection
  • mail-forward
    Enhanced formula for shine and gloss
Advantages
  • Works on different types of countertop surfaces.
  • 2-in-1 application, sealer and protectant.
  • Quick application and drying sealer.
  • Does not have an unpleasant chemical odor.
Drawbacks
  • Pricier than other granite sealers.

Rock Doctor Granite Sealer

If you are looking for the right solution to seal your granite countertops, then the Rock Doctor Sealer is the best choice. This spray sealer can be used for granite, quartz, marble and other types of natural stone surfaces. The water-based sealer penetrates deeply into the porous surface of your granite countertop and creates a bond with the stone.

The barrier offers protection against moisture, as well as bacteria, from penetrating into the stone. To get the perfect seal to resist oils and other liquids, it is recommended that you use up to 2 to 3 coats of the sealer. The spray is long lasting and can protect your granite countertop or floor for up to a year. After this, you will require to reapply the sealer for continued protection.

The Rock Doctor Sealer does not leave any unpleasant smell or fumes when you apply it to your granite countertops. The sealer spray is very gentle, yet works to protect your countertop surfaces keeping them waterproof and stainproof.

Rock Doctor Granite Sealer

Source: rockdoctor.com

OUR RATING

Features

  • Suitable for use on different surfaces such as granite, quartz, marble and other types of natural stone surfaces.
  • New, improved spray valve.
  • Water-based sealer.
  • mail-forward
    1 can will cover up to 100 sq. ft.
Advantages
  • Can be used on granite and other natural stone surfaces and also on grout.
  • No unpleasant odor or fumes after use.
  • Powerful, quick and long-lasting performance.
Drawbacks
  • The product can be used only as a sealer and cannot be used as a cleaner or a polish.
  • Needs at least 2-3 coats of the sealer to work efficiently.

StoneTech BulletProof Sealer

Designed to protect your granite countertops for a longer time, the StoneTech BulletProof Sealer is a penetrating sealer. A small amount of the sealer can cover a large portion of your countertop’s surface and a single coat of the sealer lasts for a very long time, eliminating the need for frequent reapplications. The advanced formula of the StoneTech sealer helps it to bond with the surface of the stone and protects it from oil and water-based stains.

Apart from granite countertops, the StoneTech sealer can be used for other surfaces such as marble, slate, limestone, bluestone, saltillo, sandstone, flagstone and travertine. While the application of the StoneTech sealer is quite easy; however, before using the sealer, you must ensure that the countertop surface is clean and free of any coatings or waxes. Also, before the sealer is applied, the countertop should be absolutely dry and free of any standing water.

The only drawback of the StoneTech sealer is that you need to ensure that the surface is properly cleaned and polished before application, which can be quite time consuming and if this is not done, then the sealer will not work properly.

StoneTech BulletProof Sealer

Source: laticrete.com

OUR RATING

Features

  • Size: 1 quart
  • Extra strength stain protector for natural stone and grout
  • Offers maximum protection
  • mail-forward
    Covers up to 100 sq. ft.
  • mail-forward
    Advanced, water-based fluoropolymer formula
  • Protects interior surfaces for up to 5 years
Advantages
  • Suitable for different types of countertop surfaces.
  • Dries very quickly.
  • Long lasting, lasts up to 5 years.
  • Protects the surface from tough water and oil stains.
  • Small quantity of sealer covers a large surface area.
Drawbacks
  • Pricier compared to other granite sealers in this category.
  • For the sealer to work properly, you must clean and polish the surface thoroughly, which is quite time consuming.

Best Concrete Countertop Sealers

Concrete

Tuff Duck Concrete Countertop Sealer

The Tuff Duck concrete sealer is among the top-rated water-based concrete sealers ideal to safeguard your concrete countertops. The product is very easy to use, even for first-time users. You can simply follow the convenient instructions that come along with the sealer. The food-safe and non-toxic formula of the sealer is very safe and you can use it safely even if there are kids around or if you are prone to allergies.

The Tuff Duck concrete sealer forms a thin acrylic layer on the concrete which protects your countertop from acid etching and water staining. The Tuff Duck sealer is an excellent and cost-effective way to protect your concrete surfaces including countertops and sinks.

Tuff Duck Concrete Countertop Sealer

Source: rocklinitelabs.com

OUR RATING

Features

  • Satin finish sealer
  • Covers around 45 to 60 sq. ft. per 750ml
  • Water-based formula
  • Non-toxic and food safe formula
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    Does not contain any VOCs
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    Specially designed for concrete surfaces
  • Comes along with detailed usage instructions
Advantages
  • The sealer penetrates deep into the concrete surface and forms a durable shell that protects your countertop.
  • Formula of the sealer is non-toxic, food safe and it does not contain any VOCs.
  • Gives a beautiful and smooth finish.
  • Easy to apply and quick drying.
Drawbacks
  • May chip with regular usage of the countertop.
  • Leaves a white film on top of the concrete.

Black Diamond Stoneworks Natural Stone Sealer

No sealer is comparable to the Black Diamond Stoneworks Natural Stone Sealer if you want a wet look for your concrete countertops. The Black Diamond Stoneworks sealer is quite popular among business owners and homeowners. The sealer has an extremely versatile usage and you can use it for multiple surfaces in your home and it delivers great results, whether it is used in your home’s interior or exterior.

Just a single coat of the Black Diamond Stoneworks sealer delivers a classy finish and excellent results. The quick-acting sealer produces results within 24 hours. 1 gallon of the sealer lets you cover around 600 sq. ft. and allows you to protect all the surfaces of your home very quickly. Manufactured in the US, the Black Diamond Stoneworks sealer undergoes rigorous quality checks that ensure it offers the best performance.

The concrete sealer offers an impressive finish that is long lasting. And, the best part is that you can use the Black Diamond Stoneworks sealer to protect your concrete countertops, your concrete, slate, sandstone and stone floors and all your interior and exterior surfaces of your home including your driveway, and garage.

Black Diamond Stoneworks Stone Sealer

Source: bdstoneworks.com

OUR RATING

Features

  • Professional-grade, water-based, glossy concrete sealer
  • Can be applied easily with a spray, brush or roll
  • Work on colored, decorative, stamped or aggregate surfaces
  • Chemical resistant
  • VOC compliant
  • mail-forward
    Manufactured in the USA
  • mail-forward
    Does not darken surfaces
  • 100% money back guarantee
Advantages
  • Gives your concrete countertops a glossy and wet look.
  • Can be used on different types of surfaces such as colored, decorative, stamped or aggregate surfaces.
  • You can use the sealer for concrete countertops, slate, pavers, patios, garage floors, and masonry.
  • When the sealer dries, it will not darken the surface of the stone and it won’t look like you have sprayed water on it.
Drawbacks
  • Cannot be used for polished marble or granite surfaces.

Best Sealers for Wood Countertops

Coffee Cup on Wood Counter

Waterlox Original Sealer/ Finish

Since 1910, Waterlox’s original formula is being used in thousands of homes and has been making wood beautiful. The Original Sealer/Finish from Waterlox is handmade from tung oil, which is derived from the nut of the tung tree. The super-premium finish sealant dries on your wooden surface, seals it, penetrates into the pores and waterproofs it. As the sealant dries, it becomes hard, giving the wood countertops a rich and wet look.

The Waterlox Original Sealer is a very versatile product and works well if you use 2-3 coats to finish the countertops on its own or it can be used before the application of a high-gloss or satin finisher. Once the sealer/finisher dries, it gives a medium sheen with around 75o of gloss level which may fade a little bit over time.

The Waterlox Original Sealer offers excellent protection against water damage and the finish it produces is not slippery, so it is an excellent sealer for use on floors also. The sealer can also be used on other surfaces such as limestone, linoleum, brick and even cement.

Waterlox Original Sealer Finish

Source: waterlox.com

OUR RATING

Features

  • Penetrates the wood and waterproofs it
  • Produces medium sheen of 75o and in 3-6 months it fades to a 50o to 55o sheen
  • Forms protective elastic finish
  • mail-forward
    Oldest and original product since 1910
Advantages
  • Non-toxic sealant.
  • Can be used on its own or along with a high gloss or satin finish.
  • The sealer can be used on countertops, floors, doors, windows, bar tops, furniture, table, and other wood projects.
  • It is very versatile and can be used on surfaces other than wood such as limestone, linoleum, brick and even cement.
  • Produces a protective finish for protection against moisture, spills and foot traffic.
Drawbacks
  • Quite expensive.
  • Hard to apply and takes a long time to dry.

Rust-Oleum Zinsser Bulls Eye Amber Shellac

The Amber Shellac sealer from Rust-Oleum is an excellent sealer and also delivers an antique finish for your wood countertops. Unlike other clear sealants, the Amber Shellac sealer will add an amber-colored hue to any surface it is applied to. The texture of the sealant is very smooth but not slippery and it is ideal only for indoor projects because external use of the sealant will cause the color to fade.

The sealer is a resin solution that is alcohol based which is extremely easy to use. You need to just paint it on and it dries within 30 to 45 minutes. If you don’t like the dark color, then you can simply sand off the shellac and start afresh. And, if you accidentally spill the sealer, then it can be easily cleaned using water and ammonia.

Not only does the Rust-Oleum Amber Shellac add beautiful richness and depth to your wood countertops, but the sealer also protects your wood surface from water damage and wear and tear due to daily use. And, apart from your wood countertops, the Rust-Oleum Amber Shellac is great for other indoor wood surfaces such as wood trims, paneling, tables, chairs, and railings. 

Rust-Oleum Zinsser Bulls Eye Amber Shellac

Source: rustoleum.com

OUR RATING

Features

  • Quantity: 1 quart
  • Non-toxic, all-natural sealer
  • Alcohol-based resin solution
  • mail-forward
    Suitable for use on all indoor wood projects
  • mail-forward
    Quick-drying formula
Advantages
  • Very easy to use and offers excellent value for the price.
  • Great color and protection in a single product.
  • Easy to clean up.
Drawbacks
  • Suitable only for internal use. If used externally, the color tends to fade.
  • Difficult to get a uniform tone.

Best Quartz Countertop Sealers

Rose Quartz

Granite Gold Sealer Spray

The penetrating sealer spray from Granite Gold is suitable for use not only for granite countertops but recommended for use on quartz, travertine, marble, slate, limestone and other stone countertops. The sealer is non-toxic, non-acidic, does not contain any ammonia or phosphates and is biodegradable and pH-balanced, which makes it excellent for use for kitchen countertops.

Made in the USA, the Granite Gold sealer is easy to use and comes in a bottle with a nozzle that lets you spray the product easily on your countertops. The sealer creates a barrier that offers maximum protection against water, oil, wine, coffee, and other liquid stains and etching.

You get quite a lot of product at a very cheap price, making the Granite Gold sealer a value-for-money buy. And, most importantly, the sealer dries very fast. So, if you’re looking for a convenient and safe sealer for your quartz countertops, then Granite Gold is an excellent buy.

Granite Gold Sealer Spray

Source: granitegold.com

OUR RATING

Features

  • Quantity: 24 oz sealing liquid
  • Suitable for use on all types of stone surfaces
  • Non-toxic, non-acidic sealer
  • mail-forward
    Does not contain ammonia or phosphates
  • mail-forward
    pH-balanced, biodegradable and safe to use on kitchen surfaces
  • Made in the USA
Advantages
  • Biodegradable and non-toxic that makes it safe to use in the kitchen where your food is prepared.
  • Suitable for use on any type of stone surface.
  • Large quantity for the price.
  • Inexpensive.
Drawbacks
  • Only a sealer and does not polish the surface.
  • The odor may be irritating if you do not ventilate your home properly after use.
  • Does not protect the surface for a long time.

Supreme Surface Granite, Quartz and Marble Treatment

The all-in-one Supreme Surface treatment is a cleaning, polishing and sealing product. It not only seals your quartz countertops effectively but also smoothens the surface and provides a glossy, shiny surface and a vibrant color. The Supreme Surface sealer contains ioSeal, which helps to create a strong ionically charged bond with the surface of the countertop that will not be washed off easily.

The formula of the sealer is bio-degradable and non-toxic, which makes it extremely safe to use in your kitchen and the sealer protects your quartz countertops from water, oil and dirt stains. Leaving them polished, shiny and stain-free. And, unlike the other sealers that have an unpleasant odor, the Supreme Surface sealer leaves behind a pleasant fragrance.

The sealer comes in a steel bottle that has an attached spraying nozzle which makes the application very easy. The sealer works well on most types of surfaces. So, if you’re on the lookout for a multi-purpose cleaner, polisher and sealer, then the Supreme Surface sealer is the best product for the money.

Supreme Surface Granite, Quartz and Marble Treatment

Source: supremesurfacecleaners.com

OUR RATING

Features

  • All-in-one product (cleaner, polisher, and sealer)
  • ioSeal formula
  • mail-forward
    Bio-degradable and non-toxic
  • mail-forward
    Covers 6,500 sq. ft.
  • Pack includes a microfiber cloth
Advantages
  • The Supreme Surface sealer is a multi-purpose product.
  • Product has a pleasant fragrance.
  • The product is safe to use, as it is bio-degradable and non-toxic.
  • Easy and safe to use.
  • Leaves the surfaces shiny and streak-free.
Drawbacks
  • Some users may find the product to be expensive.

Best Marble Countertop Sealers

Marble

Miracle 511 Impregnator Penetrating Sealer

The Miracle 511 sealer is a professional-grade sealer perfect for your marble countertops that you can depend on to give them the protection they need. The sealer is UV transparent and weather resistant. It is easy to apply and can be used for both interior, as well as exterior marble surfaces and especially safe for use on kitchen countertops where you prepare your food.

When used on a marble countertop, the Miracle 511 penetrating sealer penetrates the pores of the marble and forms a barrier and protects it from water and oil-based stains. The sealer makes your marble surfaces less slippery and much tougher, which makes it ideal for surfaces where you have heavy foot traffic.

Miracle Sealants 511 Impregnator Sealer

Source: miraclesealansts.com

OUR RATING

Features

  • Suitable for use on both interior and exterior surfaces
  • Non-toxic and safe for use on kitchen countertops and surfaces
  • UV transparent
  • mail-forward
    Weather resistant
  • mail-forward
    Prevents oil and water-based stains
  • Covers around 1,000 sq. ft. per quart of sealant
Advantages
  • Can be used on different types of surfaces such as marble, travertine, terrazzo, slate, porcelain tile, sanded grout, ceramic tile, stucco, and glazed tile.
  • Protects against water and oil stains and slipping.
  • Oil and water-resistant formula that offers protection by creating a barrier.
  • Offers superior coverage.
  • Easy to apply.
  • Non-toxic and safe to use in your kitchen and on countertops and surfaces where you prepare your food.
  • Non-slippery when applied to floors.
Drawbacks
  • The sealer is quite pricey.
  • After a while, you may have to reapply it.

Black Diamond Color Enhancer Sealer

The Black Diamond Color Enhancer Sealer is popular for its ability to rejuvenate as well as darken the surfaces that have been sealed. The formula of the Black Diamond sealer makes it ideal for marble countertops which require sealing after prolonged periods of neglect. The sealer offers protection from oil- and water-based elements.

The Black Diamond sealer is excellent for both interior as well as exterior use. It is easy to apply and is long lasting too. However, since the product is color enhancing, it is recommended that you test a small area of your marble surface before applying the sealer to the entire area.

Black Diamond Color Enhancer Sealer

Source: bdstoneworks.com

OUR RATING

Features

  • Suitable for interior, as well as external use
  • Protects from oil and water stains
  • Allows vapor transmission
  • mail-forward
    Made in the USA
Advantages
  • Darkens and highlights the natural beauty of your marble countertops.
  • Enhances the appearance of weathered surfaces and rejuvenates the color.
  • Easy to apply and lasts for a long time.
  • Seals out the water effectively.
Drawbacks
  • It is quite expensive.
  • May change the natural appearance of the marble surfaces.

Do You Need to Seal Your Countertops?

It is a common belief that irrespective of the material of the countertops, by sealing them, you can prolong their life and prevent issues such as etching and staining. However, this is a myth. While sealing countertops made from natural stone does protect them from day-to-day wear and tear, sealing is not suitable for all types of natural stones. Certain stones will not absorb the sealer and the sealer will dry over the stone’s surface and result in a streaky, cloudy mess.

Stones

Types of Stone

  • First, you must determine the type of countertop you have and what are its sealing needs. To avoid any problems and mistakes, you need to know what stone your countertop is made of, understand how to maintain it and determine if sealing is required. If your stone countertop requires sealing, then which is the best countertop sealer to use.
  • Stones like limestone, marble, and travertine are all soft stones, which are quite susceptible to getting scratched and stained, which is why they should be polished.
  • Some varieties of granite are more porous and absorbent compared to others and many times, granite is mixed with other materials, which causes the countertop to etch or corrode easily when exposed to acidic foods such as coffee, alcohol, fruit juice, or salad dressing.
  • While soapstone is not at all porous, it is very soft, which means that it will not stain but the surface can very easily get scratched. You can seal soapstone countertops; however, this is purely for aesthetic purposes and it helps to prevent any superficial scratches.
  • Stones that are highly dense do not absorb spilled liquids, but neither will they absorb sealers and so sealing is not recommended for countertops made from such dense stones.
  • It is not necessary to seal quartz countertops because they have non-porous surfaces and are sufficiently durable.

Always remember that polishing the countertops can help to reduce the absorption of all types of stones. Some countertops made from natural stone are pre-sealed during the manufacturing process. These countertops are very durable because the sealer penetrates the stone very deeply and offers long-lasting protection.

The industrial sealers are resin based and hence, they can fill the tiny cracks and pores in the stone and prevent the accumulation of dirt and/or moisture. However, the sealing process may cause some of the natural characteristics of the stone to be lost.

Should You Seal Your Countertop?

Generally, denser and dark-colored granite countertops do not require to be sealed. If polished, stones such as limestone, travertine and several varieties of marble do not need sealing and sealing of soapstone is usually only for aesthetic purposes. You can perform the following tests to determine if your countertop needs to be sealed or not.

Kitchen Interiors

Towel Test

Soak a white cotton towel or a paper towel with water and place it on the countertop. Wait for around 5 to 10 minutes. If the surface under the wet towel gets discolored or turns dark, it means that your natural stone countertop must be sealed to resist spills and stains.

Solvent Test

Put a few drops of cooking oil, lemon juice or paint thinner on your countertop and wait for 5 to 10 minutes. If the stone turns dark, then you must protect the surface of your countertop using a permeating sealer to protect it from oil-based stains.

Sealing Natural Stone Countertops

By sealing your countertops, you can prevent dust, dirt, and moisture from penetrating the stone. Most natural stones are porous, which makes them quite absorbent. The color and structural integrity of the stones can be damaged if water and acids percolate through them. Sealers help by preventing the liquids from infiltrating deeply into the stone and also make the surface of the stone stain-resistant and resistant to slight damages. 

Here are some tips on how to seal natural stone countertops. Choose a sealer that is suitable for the specific requirements for your stone countertop. The best countertop sealer will make your countertop:

  • More functional without taking away from its look and feel.
  • Resistant to stains from oil, food and other household items.
  • Heat-resistant to hot pans and pots.
  • Resistant to etching because of exposure to acidic substances such as vinegar or lemon juice.
  • Scratch-proof, non-toxic and easy to clean.

The best countertop sealer will offer long-term protection to your countertop without the need for frequent re-application and maintenance.

You can choose between sealers that are water based versus solvent-based ones to reduce soiling and prevent staining. Impregnating sealers are believed to be more efficient because they infiltrate the stone and fill the pores and fissures. You will need to use a resin-based sealer if you have any resin applied to your countertops.

The high-quality sealer can last for around 10 to 15 years and they offer sufficient protection for your delicate and expensive countertops.

Succulents on the Sink

Verdict

Irrespective of whatever material the countertops in your home are made of, whether it is granite, concrete, wood, quartz or marble, sealing your countertops can safeguard them and help you benefit from their beauty for a lifetime. The installation of countertops in your home is quite expensive and if you do not maintain and take care of them, you may have to spend a lot in expensive repairs or you may have to completely replace your countertops, which can create a huge dent in your savings.

So, it is a good idea to invest some time, money and effort and seal your countertops with a high-quality sealer and enjoy the beauty of the countertops in your home for years to come. And, we hope that our buying guide and reviews of the best countertop sealers help you in selecting the best sealer and in keeping your countertops and your home beautiful forever.