The 6 Best Granite Sealers (2023 Guide)

Granite sealer prevents liquids, foods, and stains from penetrating, developing build-up and aging your countertops. The This Old House Reviews Team has selected the best granite sealers on Amazon to protect your kitchen countertops from damage. Keep reading to learn more about them.

Top 6 Granite Sealers

• Best Multipurpose Sealer: Weiman Disinfectant Granite Daily Clean and Shine
• Best Penetrating Sealer: Aqua Mix Sealer’s Choice Gold
• Best for Small Surfaces: TriNova Granite Sealer and Protector
• Best Instructions: Granite Gold Water-Based Sealer
• Best Quantity: Black Diamond Stoneworks Cleaner and Sealer
• Best Natural Look: Oceancare Products Penetrating Sealer

Best Multipurpose Sealer: Weiman Disinfectant Granite Daily Clean and Shine

Pros and Cons

✔ Has a light citrus scent
✔ Can kill bacteria in as little as 10 minutes
✔ Has a formula that’s gentle enough for daily use

✘ Can cause moderate eye irritation
✘ Requires users to remove and wash their clothing after use

What Customers Are Saying

Customers praised this sealer for preventing everything from streaks to fingerprints from forming on their countertops. However, customers who rated this product poorly claimed that it was too harsh for daily use, requiring them to wear gloves and other protective equipment during application.

Best Penetrating Sealer: Aqua Mix Sealer’s Choice Gold

Pros and Cons

✔ Composed of a water-based formula
✔ Maintains the look of natural stone tile without creating excessive shine
✔ Lasts for up to 15 years between applications

✘ Has a high per-ounce price
✘ Not sold in other sizes

What Customers Are Saying

Customers found that this sealer could be applied to various surfaces with almost any tool, from paintbrushes to sponges. However, some customers found that this sealer left a blotchy, white haze behind, which was particularly pronounced in floor grout.

Best for Small Surfaces: TriNova Granite Sealer and Protector

Pros and Cons

✔ Works on both stone and grout
✔ Enhances your countertops’ shine
✔ Uses a unique polymer blend to provide long-lasting protection

✘ Requires one hour to cure
✘ Doesn’t have a pH-neutral formula

What Customers Are Saying

Amazon reviewers were stunned by the sealer’s shining and brightening properties. However, multiple customers claimed that they applied this sealer more than three times and saw no results.

Best Instructions: Granite Gold Water-Based Sealer

Pros and Cons

✔ Made of food-safe, pH-balanced ingredients
✔ Works on a wide range of natural stone surfaces
✔ Has a non-acidic formula that can be used on sensitive materials such as slate

✘ Has to be applied two to three times to fully protect your surfaces
✘ Isn’t recommended for daily use

What Customers Are Saying

Multiple customers claimed that this product did exactly what it said it would, preventing water from being absorbed into countertops and buffing out irregularities. However, some customers complained that it left a dark stain behind if their countertops weren’t completely dry before applying the sealer.

Best Quantity: Black Diamond Stoneworks Cleaner and Sealer

Pros and Cons

✔ Sold in a variety of sizes and quantities
✔ Has a hypoallergenic formula
✔ Made in the United States

✘ Can’t be used as a standalone sealer because its formula is mostly composed of cleaner
✘ Has an overpowering smell, according to some customers

What Customers Are Saying

Customers said this product was easy to apply, making sealing even large countertops quick. Several customers complimented the spray bottle’s wide brim, which made refilling without spilling easy. However, some customers complained about the overpowering smell of the product, which forced them to take multiple breaks during application.

Best Natural Look: Oceancare Products Penetrating Sealer

Pros and Cons

✔ Comes in a one-gallon quantity
✔ Has a low-odor and low-VOC formula
✔ Can seal the same day you grout

✘ Is expensive
✘ Doesn’t offer a high sheen for those who prefer shiny, glossy surfaces

What Customers Are Saying

Overall, customers who reviewed this granite sealer product thought that it was easy to apply, came in a sizeable quantity fit for large granite sealing jobs, and dried with no visible residue. However, some users thought the sealer was overpriced compared to other options on the market.

Buying Guide for Granite Sealers

Granite sealer keeps your countertops shiny, smooth, and stain free for longer. This buying guide will help you pick the best sealer for your granite surfaces.

Size

Granite sealer can come in small spray bottles or large tubs, ranging from one quart to over a gallon in size. Consider how large your countertops are and how much sealer you will need to cover them before making a purchase.

Function

The main function of granite sealer is to create a barrier between the granite and anything that could come into contact with it. This prevents damage and keeps the surface smooth and shiny. However, some granite sealers offer additional functions, such as cleaning spills and killing germs.

Type

Granite sealers are separated into types based on how they’re made and how they work. These types include the following:

• Coating: This type of sealer creates a moisture-proof seal on the outside of the granite countertop that blocks dirt and bacteria.
• Oil-based: Oil-based sealers last longer, but they have a strong smell and may leave a sticky residue behind.
• Penetrating: Penetrating sealer seeps into the granite’s pores to protect it from the inside out.
• Water-based: This type of sealer evaporates faster than other granite sealers and doesn’t have a strong odor.

Duration

A good granite sealer can last anywhere from six months to five years. However, even if your countertop is sealed, be sure to clean it regularly. If you don’t clean your countertop, your sealer will need to be reapplied more frequently.

Odor

Some granite sealers give off a distinct chemical odor. Others have a mild odor or no odor. Oil-based granite sealers generally have a stronger odor than water-based alternatives, so if you’re sensitive to smells, opt for the latter.

Tips for Using Granite Sealers

Granite-sealing products can be valuable and effective in preserving expensive stone materials such as true granite. Here are some general use tips to help homeowners apply granite sealer safely and effectively:

• Clean the surface you’re working on thoroughly. Ensure that the surface is free of dust, grease, and other contaminants before you begin.
• To confirm that different parts of your granite surface require sealing, test the porosity by dropping a few drops of water. If the water is absorbed, the granite should be sealed.
• Make sure you’re using the right type of granite sealer for your granite.
• Apply the sealer in a thin, even layer. Don’t apply too much sealer at a time.
• Carefully follow the instructions listed on the specific granite sealer product you choose.
• Reapply additional granite sealer as necessary. Don’t use any abrasive cleaning products or cleaning products that contain harsh chemicals, as they could prematurely wear away the seal.

Frequently Asked Questions About Granite Sealers

Why is sealing granite important?

Sealing granite is important because granite countertops can develop chips, cracks, and stains over time. Applying granite sealer can protect your countertop from damage and save you from having to replace it while also giving it polish.

Can I use granite sealer on other types of countertops?

Most granite sealers can be used on other types of natural stone, including marble, sandstone, soapstone, limestone, and travertine. However, don’t use granite sealer on wood, metal, tile, laminate or quartz countertops.

Is granite sealer safe?

Most granite sealers are made from safe ingredients that can come into contact with your skin, but you still shouldn’t ingest them. Once you have sealed your countertop, wash your hands thoroughly. Wait until it’s fully dry before using the surface for cooking or eating.

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