Best Sealer For Flagstone – Top 5 Picks & Review

Imagine your beautiful flagstone patio, sparkling and vibrant, resisting stains and the harsh weather. But are you worried about keeping it that way? Choosing the right sealer for your flagstone can feel like a puzzle. You want to protect your investment, but with so many products out there, how do you know which one is best? It’s easy to get confused by all the different types and what they do.

This is where we come in! We understand the frustration of wanting your flagstone to look its best for years to come. That’s why this post will break down everything you need to know about sealers. We’ll help you understand what makes a sealer good for flagstone and guide you through the choices. You’ll learn how to pick a sealer that not only protects your stone but also enhances its natural beauty without making it look unnatural.

By the end of this article, you’ll feel confident in your choice. You’ll know what to look for and what to avoid, saving you time, money, and potential headaches. Let’s dive in and discover the perfect way to protect and beautify your stunning flagstone surfaces!

Our Top 5 Sealer For Flagstone Recommendations at a Glance

Top 5 Sealer For Flagstone Detailed Reviews

1. Wet Look Natural Stone Sealer. Durable

Wet Look Natural Stone Sealer. Durable, Long-Lasting Gloss Protection. Interior and Exterior Pavers, Slate, Sandstone, Travertine, Flagstone, Driveways, Garage Floors, etc. Black Diamond Stoneworks.

Rating: 9.4/10

The Black Diamond Stoneworks Wet Look Natural Stone Sealer offers a fantastic way to protect and beautify your stone surfaces. It gives a glossy finish that makes your pavers, slate, sandstone, and more look vibrant and new. This sealer works wonders both inside and outside your home, protecting against everyday wear and tear.

What We Like:

  • It creates a beautiful, glossy “wet look” that really makes colors pop on concrete, pavers, stone, slate, and brick.
  • This sealer protects your surfaces from water, oil, and chemicals. It also guards against sun damage, keeping your stone looking great.
  • You can use it on many things like driveways, patios, garage floors, and decorative stone.
  • It’s easy to put on using a sprayer, roller, or brush.
  • The finish adds shine without making most surfaces much darker, keeping their natural look.
  • The formula is water-based and doesn’t have a strong smell. It’s easy to clean up with just soap and water.
  • One gallon covers a large area, up to 600 square feet.

What Could Be Improved:

  • While it maintains natural appearance on most surfaces, some very light-colored stones might darken slightly more than desired.
  • The “wet look” might not be everyone’s preference; some might prefer a more matte finish.

Overall, this sealer is a smart choice for enhancing and protecting your stone surfaces. It’s easy to use and provides lasting beauty.

2. McKinnon Concrete Sealer

McKinnon Concrete Sealer, Paver Sealer 5 Gallon, Penetrating Semi Gloss Wet Look, Outdoor/Indoor, Concrete, Brick, Natural Stone, Limestone, Rock, Cement, Flagstone, Stucco, Pool Decks

Rating: 9.4/10

The McKinnon Concrete Sealer, Paver Sealer in a 5-gallon size offers a semi-gloss, wet-look finish for both indoor and outdoor surfaces. This industrial-grade, professional’s choice sealer is designed to protect a wide variety of materials, bringing new life to weathered areas.

What We Like:

  • It’s built tough for professional use, meaning it’s super strong.
  • This sealer works on almost anything: concrete, pavers, brick, stone, limestone, flagstone, stucco, and even pool decks!
  • It creates a beautiful, wet-look finish that really makes surfaces pop.
  • The formula won’t peel or crack, so you don’t have to worry about it looking bad later.
  • It dries clear in just 8 hours, so you can see the natural beauty of your surfaces.
  • It can protect your surfaces for up to 5 years, saving you time and money.
  • It revives old, worn-out surfaces, making them look like new again.
  • It’s a water-based formula, making it easier to clean up.

What Could Be Improved:

  • For DIYers, a 5-gallon bucket might be a large amount to handle.
  • The “wet look” might not be everyone’s preferred finish.

This McKinnon Concrete Sealer is a powerful and versatile product that makes surfaces look fantastic and last longer. It’s a great investment for anyone looking to protect and beautify their outdoor and indoor spaces.

3. Wet Look Natural Stone Sealer. Durable

Wet Look Natural Stone Sealer. Durable, Long-Lasting Gloss Protection. Interior and Exterior Pavers, Slate, Sandstone, Travertine, Flagstone, Driveways, Garage Floors, etc. Black Diamond Stoneworks

Rating: 8.7/10

Black Diamond Stoneworks’ Wet Look Natural Stone Sealer is a fantastic way to make your stone and concrete surfaces look their best. It gives a beautiful, shiny finish that really brings out the colors. This sealer works on almost anything, from your driveway and patio to inside your home on decorative stone.

What We Like:

  • It creates a gorgeous wet look, making your surfaces shine and colors pop.
  • It protects your surfaces from water, oil, and even the sun’s rays.
  • You can use it on many different things like pavers, slate, sandstone, travertine, flagstone, and concrete.
  • It’s easy to put on with a sprayer, roller, or brush.
  • The finish stays clear and doesn’t turn yellow over time.
  • It cleans up easily with just soap and water.
  • The low-odor, water-based formula is nice to work with.
  • It covers a lot of area, up to 600 sq. ft. per gallon.

What Could Be Improved:

  • While it aims to maintain a natural look, some users might find the “wet look” gloss to be more intense than expected on certain very light-colored stones.
  • The long-term durability, while advertised as long-lasting, might require reapplication sooner than some users hope, especially in high-traffic areas or harsh weather.

This sealer is a great choice for anyone wanting to protect and beautify their stone and concrete surfaces. It’s easy to use and makes a big difference in how your home’s exterior and interior look.

4. Wet Look Natural Stone Sealer. Durable

Wet Look Natural Stone Sealer. Durable, Long-Lasting Gloss Protection. Interior and Exterior Pavers, Slate, Sandstone, Travertine, Flagstone, Driveways, Garage Floors, etc. Black Diamond Stoneworks

Rating: 8.9/10

Transform your stone and concrete surfaces with Black Diamond Stoneworks’ Wet Look Natural Stone Sealer. This product offers durable, long-lasting gloss protection for both indoor and outdoor areas. It works wonders on pavers, slate, sandstone, travertine, flagstone, driveways, garage floors, and more, bringing out the natural beauty of your materials.

What We Like:

  • Try Before You Commit: The 2-pack includes 4oz bottles of both Color Enhancer Sealer and Wet Look Sealer. This lets you test both finishes to find the perfect look for your surfaces.
  • Color Enhancer Sealer: This sealer makes your stone colors richer and deeper without adding any shine. It’s great for marble, travertine, slate, limestone, and other porous rocks.
  • Wet Look Sealer: Get a beautiful, glossy finish that makes your stone and concrete look richer and more vibrant. It’s ideal for pavers, concrete, and decorative stone inside and outside your home.
  • Long-Lasting Protection: Both sealers shield your surfaces from water, stains, and UV damage. They also let moisture escape, which helps prevent damage to the surface.
  • Test with Confidence: Homeowners and professionals can easily apply and check the results before buying larger sizes.

What Could Be Improved:

  • The sample sizes are great for testing, but you’ll need to purchase larger quantities for bigger projects.
  • While the gloss is beautiful, some users might prefer a matte finish, which isn’t offered in this sample pack.

This product offers a fantastic way to sample and choose the right sealer for your stone. You can confidently protect and enhance your surfaces with Black Diamond Stoneworks.

5. 1 Gallon Bricks & Exterior Surfaces

1 Gallon Bricks & Exterior Surfaces, All Purpose Concrete Sealer, Long-Lasting Stone Sealer for All Weather Protection, Penetrating Water Repellent Protection for Driveways, Patio, Pavers, Floor

Rating: 9.1/10

Protect your outdoor surfaces with this powerful 1 Gallon All-Purpose Concrete Sealer. It works on driveways, patios, pavers, and even bricks, keeping them looking great and safe from the elements. This sealer is designed to last and keep water out.

What We Like:

  • It works well in all kinds of weather, like rain and snow. This means your surfaces are protected all year.
  • The sealer stops water from soaking into concrete and bricks. This helps prevent cracks and damage from freezing and thawing.
  • It makes your concrete and bricks look better by bringing out their natural colors. It also stops stains from oil, grease, and salt.
  • You can use it on many different outdoor surfaces, so you don’t need lots of different products. It’s like a superhero for your concrete.
  • Applying it is simple with a roller, sprayer, or brush, and it dries fast. This saves you time and effort.

What Could Be Improved:

  • While it’s good at protecting surfaces, the description doesn’t mention specific details about how long the protection lasts under very harsh conditions.
  • The product is described as “Zero-VOC,” which is great for the environment, but it might be helpful to know if there’s any scent during application.

This concrete sealer offers strong, all-around protection for your outdoor spaces. It’s a smart choice for keeping your driveways, patios, and walkways looking their best.

Choosing the Best Sealer for Your Flagstone

Flagstone is beautiful. It adds natural charm to patios, walkways, and garden walls. But without protection, it can fade, stain, and get damaged. A good sealer is your flagstone’s best friend. It keeps it looking great for years. This guide will help you pick the right one.

Key Features to Look For

When you shop for a flagstone sealer, keep these important things in mind:

  • Protection Level: How well does it guard against stains? Does it stop water from getting in? Look for sealers that offer good stain resistance and water repellency. This is super important for keeping your flagstone looking new.
  • Finish: Do you want your flagstone to look natural? Or do you prefer a wet, glossy look? Sealers come in different finishes. Some keep the stone looking matte, while others enhance its color and give it a sheen.
  • Durability: How long will the sealer last? Some sealers need to be reapplied every year. Others can last for several years. A more durable sealer means less work for you.
  • Ease of Application: Is it easy to put on? Most sealers are sprayed or rolled on. A sealer that’s simple to apply saves you time and frustration.
  • Breathability: Can moisture escape from the stone? Some sealers trap moisture. This can cause problems like spalling (flaking). A breathable sealer lets the stone “breathe.”

Important Materials

Sealers are made from different things. The material affects how well it works.

  • Acrylics: These are common and affordable. They offer good protection against stains and water. Acrylic sealers often give a nice sheen, enhancing the stone’s color. They are usually easy to apply.
  • Silicones/Siloxanes: These are very good at repelling water. They soak into the stone and create a barrier. They often provide a natural, matte finish. They are also breathable.
  • Polyurethanes: These are very tough and durable. They create a strong protective layer on the surface of the stone. They can offer a glossy finish and excellent stain resistance. However, they might not be as breathable as other types.

Factors That Improve or Reduce Quality

What makes a sealer great or not so great?

  • Good Quality Factors:
    • UV Protection: Sunlight can fade flagstone. A sealer with UV protection helps prevent this.
    • Mold and Mildew Resistance: In damp areas, mold and mildew can grow. A good sealer can stop this.
    • Penetration: Sealers that soak into the stone offer better protection than those that just sit on the surface.
  • Poor Quality Factors:
    • Slippery Surface: Some sealers can make flagstone very slippery, especially when wet. This is a safety hazard. Look for anti-slip properties or choose a matte finish.
    • Yellowing: Some sealers can turn yellow over time, especially when exposed to sunlight. This looks bad.
    • Peeling or Flaking: If a sealer doesn’t bond well with the stone, it can peel off. This means you have to do the job again.

User Experience and Use Cases

How do people use flagstone sealers? And what’s it like to use them?

  • Patios and Outdoor Living Areas: This is a popular spot for flagstone. Sealers protect against food spills, drink stains, and general foot traffic. They make cleaning easier.
  • Walkways and Paths: These areas get a lot of use. A good sealer keeps the stone from wearing down and looking dull. It also helps prevent moss and algae growth.
  • Pool Decks: Flagstone around pools needs protection from chemicals and water. A sealer that’s water-resistant and not too slippery is key here.
  • Garden Features: Flagstone walls, borders, and decorative elements also benefit. Sealers keep their natural beauty.

Using a sealer is usually straightforward. You clean the flagstone thoroughly. Then, you apply the sealer with a brush, roller, or sprayer. It’s important to follow the product’s instructions for drying times. Most users find that sealing their flagstone is a worthwhile task that makes their outdoor spaces look much better and last longer.


Frequently Asked Questions about Flagstone Sealers

Q: What is the main purpose of sealing flagstone?

A: The main purpose is to protect flagstone from stains, water damage, and fading. It helps keep your flagstone looking beautiful for a long time.

Q: How often should I seal my flagstone?

A: This depends on the sealer you use and how much traffic the flagstone gets. Some sealers last 1-2 years, while others can last 3-5 years or more. Check the product label.

Q: Can I seal flagstone myself?

A: Yes, you can! Most flagstone sealers are easy to apply with a brush, roller, or sprayer. Just make sure to clean the stone first.

Q: Will sealer change the look of my flagstone?

A: Yes, it can. Some sealers give a “wet” look and enhance the color. Others dry clear and maintain the natural look. Choose the finish you prefer.

Q: What’s the difference between a penetrating sealer and a topical sealer?

A: A penetrating sealer soaks into the stone for deep protection. A topical sealer forms a protective layer on the surface.

Q: Is it okay to seal flagstone in cold weather?

A: No, it’s best to seal flagstone when the temperature is mild, usually between 50-80°F (10-27°C). Cold temperatures can affect how the sealer cures.

Q: How do I clean flagstone before sealing?

A: You need to clean it very well. Remove all dirt, debris, moss, and old sealer. A stiff brush and a mild cleaner usually work.

Q: Can I use the same sealer on all types of flagstone?

A: While many sealers work on most flagstones, it’s always a good idea to check if the sealer is suitable for your specific type of stone.

Q: What if my flagstone becomes slippery after sealing?

A: Some sealers can make surfaces slippery. Look for sealers that offer an anti-slip additive or choose a matte finish. You might also find anti-slip treatments you can add.

Q: How do I know if my flagstone needs sealing?

A: Pour a little water on the stone. If the water soaks in and darkens the stone, it probably needs sealing. If the water beads up, it’s still protected.

In conclusion, every product has unique features and benefits. We hope this review helps you decide if it meets your needs. An informed choice ensures the best experience.

If you have any questions or feedback, please share them in the comments. Your input helps everyone. Thank you for reading.