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Best Water Sealer For Concrete (2025 Updated)

If you’re looking for a way to protect your concrete surfaces from water damage, a good water sealer may be just what you need. But with so many options on the market, how do you know which one to choose? Before buying any water sealer for concrete, it’s important to consider a few key factors.

First and foremost, you need to determine your specific needs. Are you looking for a water sealer for your basement floor or your outdoor patio? Different products may be better suited for different applications. You also need to consider the type of concrete you’re dealing with, as well as the climate and weather conditions in your area.

When shopping for a water sealer for concrete, be sure to read product labels and customer reviews carefully. Look for a product that offers long-lasting protection without yellowing or discoloring over time. You should also choose a water sealer that is easy to apply and does not require excessive prep work.

Are you tired of dealing with water damage and stains on your concrete surfaces? Do you want to protect your investment and ensure that your concrete lasts for years to come? If so, a water sealer for concrete may be just what you need. Keep reading to learn more about why a water sealer is so important for your concrete surfaces, and what you need to consider before making your purchase.

10 Best Water Sealer For Concrete

# Product Image Product Name Product Notes Check Price
1
This product is ideal for sealing concrete against water, vapor, and radon gas in basements for waterproofing and mitigation.
2
Ideal for sealing and protecting concrete, brick, and paver surfaces from water damage, molds, and mildew.
3
This product is ideal for repairing and sealing water leaks through cracks in concrete walls, specifically in the basement.
4
This product is ideal for repairing, sealing, and cooling pool deck surfaces that cover 150 square feet.
5
This product is ideal for providing water repellent protection to all porous concrete surfaces with a natural finish.
6
Ideal for protecting concrete and masonry surfaces from water damage and penetration.
7
The product is ideal for providing water repellent protection to porous stucco surfaces using a clear natural finish concentrate.
8
This product is ideal for cleaning concrete and gunite inground pools with its suction-side technology.
9
The product is ideal for spraying liquids in a handheld manner, with a capacity of 3.5 gallons and a stainless steel construction.
10
The pressure washer surface cleaner with wheels and quick connector is ideal for efficiently cleaning large outdoor surfaces.
This product is ideal for sealing concrete against water, vapor, and radon gas in basements for waterproofing and mitigation.
Ideal for sealing and protecting concrete, brick, and paver surfaces from water damage, molds, and mildew.
This product is ideal for repairing and sealing water leaks through cracks in concrete walls, specifically in the basement.
This product is ideal for repairing, sealing, and cooling pool deck surfaces that cover 150 square feet.
This product is ideal for providing water repellent protection to all porous concrete surfaces with a natural finish.
Ideal for protecting concrete and masonry surfaces from water damage and penetration.
The product is ideal for providing water repellent protection to porous stucco surfaces using a clear natural finish concentrate.
This product is ideal for cleaning concrete and gunite inground pools with its suction-side technology.
The product is ideal for spraying liquids in a handheld manner, with a capacity of 3.5 gallons and a stainless steel construction.
The pressure washer surface cleaner with wheels and quick connector is ideal for efficiently cleaning large outdoor surfaces.

1. Radonseal 5-Gallon: Waterproof, Moisture And Radon Guard

The concrete sealer is an effective solution that penetrates concrete up to 4 inches, making it ideal for use on basement floors, interior basement walls, foundation walls, slab-on-grade, indoor and outdoor poured concrete slabs and walls. It works by internally sealing the matrix of concrete, blocking the pores and capillaries to prevent water seepage, water vapor, and radon gas. This not only helps to protect against and reduce concrete dusting, efflorescence, damage caused by salts, de-icing chemicals, and freeze-thaw but also hardens and strengthens concrete.

The formula is eco-friendly and easy to apply, with zero VOCs, no odors, no solvents, non-toxic, and non-flammable, making it safe for use in any environment. It is also water-based, which means that it does not trap moisture.

This concrete sealer is permanent and paintable, eliminating the need for reapplication. It is resistant to hydrostatic water pressure and does not form a surface film, so there is no peeling or fading. It leaves the surface paintable and is a great primer for epoxies, tiles, and overlay flooring.

The concrete sealer is commercial-grade and is backed by a money-back guarantee. It has been trusted since 1997 and has been used in various projects with excellent results.

Pros

  • Penetrates concrete up to 4 inches, making it effective in preventing water seepage, water vapor, and radon gas.
  • Hardens and strengthens concrete, reducing concrete dusting, efflorescence, damage caused by salts, de-icing chemicals, and freeze-thaw.
  • Eco-friendly and easy to apply formula with zero VOCs, no odors, no solvents, non-toxic, and non-flammable. Water-based.
  • Permanent and paintable, eliminating the need for reapplication. Resistant to hydrostatic water pressure. Leaves the surface paintable. Great primer for epoxies, tiles, and overlay flooring.
  • Commercial-grade and backed by a money-back guarantee. Trusted since 1997.

2. Silane Siloxane Sealer For Concrete And Brick (6 Words)

The water-based Silane Siloxane sealer is an excellent product that can be used both indoors and outdoors. It has high solids content and is breathable, which makes it perfect for use on vertical and horizontal surfaces like concrete, brick, and pavers. This sealer is approved by the DOT as a water repellent sealer and can provide up to 10 years of performance, which is a great value for its cost. It is designed to maintain the natural, unsealed look and feel of the substrate, which is a plus point for those who want to keep the original appearance of their surfaces. The sealer is also effective in reducing damage caused by snow and ice, road salts, mold and mildew, and staining, which makes it a reliable and long-lasting solution for surface protection.

Applying this sealer is easy and requires no special tools or equipment. It can be used by both professionals and DIY enthusiasts, and it dries quickly, which means that the surface can be used again in no time. The sealer is also resistant to UV rays and does not yellow, which ensures that the surface remains protected and looks great for years to come. It is eco-friendly and does not emit any harmful fumes, which makes it safe for use around people and pets. In summary, the water-based Silane Siloxane sealer is an excellent product that provides long-lasting protection to surfaces and is a great value for its cost.

Pros

  • Can be used on interior and exterior, vertical and horizontal concrete, brick, and pavers.
  • Approved by the DOT as a water repellent sealer and can provide up to 10 years of performance.
  • Maintains the natural, unsealed look and feel of the substrate.
  • Reduces damage caused by snow and ice, road salts, mold and mildew, and staining.
  • Easy to apply and dries quickly.
  • Resistant to UV rays and does not yellow.
  • Eco-friendly and does not emit any harmful fumes.

3. Polyurethane Concrete Crack Repair Kit.

Looking for a solution to stop leaks in your concrete basement wall cracks? Look no further than this fast-curing epoxy paste surface sealer and port adhesive. With the ability to bond tightly to concrete and even brick patterned walls, it's the perfect solution for any homeowner or contractor.

This product features a Hydra Stop 300 hydrophobic polyurethane foam that fills the cracks, ensuring that water and other liquids won't seep through. It's designed to work quickly and effectively, providing a long-lasting solution that you can count on.

Whether you're dealing with minor cracks or major leaks, this product has you covered. It's easy to use, even for those with minimal experience, and provides a durable and effective barrier against water damage. So don't wait – try it out today and see the difference for yourself!

Pros

  • Fast-curing epoxy paste surface sealer and port adhesive
  • Bonds tightly to concrete and brick patterned walls
  • Hydra Stop 300 hydrophobic polyurethane foam fills cracks
  • Effective solution for minor cracks and major leaks
  • Easy to use, even for those with minimal experience
  • Provides long-lasting protection against water damage

4. Cool Coating For Pool Deck Surfaces

This pool and deck product is highly recommended by various water theme parks, resorts, national landmarks, and even residential swimming pools. It offers commercial-grade performance at an affordable price, and it delivers on its promises. The coating is designed to keep your feet comfortable while also keeping your pool area cooler by absorbing heat and transferring it directly into the soil below. With a drop in temperature of up to 38%, you can enjoy your time by the pool with comfortable feet.

Safety is a top priority, and this product is the perfect solution for a safe and skid-resistant surface around your swimming pool or hot tub. It meets the safety requirements for non-slip surfaces, even when it's wet. The coating bonds with concrete at a molecular level, filling in cracks and permanently sealing them. This makes it difficult for dirt to hide, and cleaning the surface with soap and water is easy. The product can withstand pressure washing and doesn't peel or chip. You can also apply Encore's SealBack Nano-Acrylic Sealer for extra protection.

This product is easy to use. Start by spraying the concrete with Triple Crown, then wash away the dirt and debris that Triple Crown lifts from the surface. Let the surface dry completely and apply the COOL treatment. Mix the kit with water and apply COOL with a paint roller. You can add 1 gallon of acrylic paint to color the coating and enhance the look of your pool area. Dry for 30 minutes and apply a second coat of COOL. Apply the SealBack treatment to make everything almost completely permanent.

Pros

  • This product is highly recommended by various water theme parks, resorts, national landmarks, and even residential swimming pools
  • The coating keeps your feet comfortable while also keeping your pool area cooler by absorbing heat and transferring it directly into the soil below
  • The product meets the safety requirements for non-slip surfaces, even when it's wet
  • The coating bonds with concrete at a molecular level, filling in cracks and permanently sealing them
  • Cleaning the surface with soap and water is easy
  • The product can withstand pressure washing and doesn't peel or chip

Cons

  • – The product requires a SealBack treatment for extra protection

5. Porous Concrete Protector – 5 Gallon Bucket

Rainguard Water Sealers Concrete Sealer is a premium-grade water-based silane/siloxane water repellent that is designed to protect, restore and extend the life of your home's concrete surfaces. It is formulated to penetrate deep into the surface and inhibit moisture damage. The sealer dries to an invisible, stain-resistant finish that won't alter the surface texture or appearance.

This concrete sealer is engineered with Micro-Lok, a proprietary ingredient that ensures sealer absorption and creates a long-lasting filmless hydrophobic barrier against weathering, salt, dirt, freezing temperatures, UV light, wind-driven rain, and other damaging elements. This makes it the ideal weatherproof sealant for all vertical and horizontal concrete surfaces including garage and basement floors, stamped concrete, countertops, driveways, sidewalks, walls, and patios.

Rainguard Water Sealers Concrete Sealer is premixed and ready to use right out of the pail, making it easy and convenient to apply. Before use, lightly mix the solution to disperse any settled material. Five gallons of this impregnating concrete waterproofer coat, seal, and protect up to 1000 square feet. For a more cost-effective solution, Rainguard Water Sealers also offers concentrated and super concentrated formulations.

Applying the sealer is easy and seamless. Prior to applying Rainguard Concrete Sealer, protect anything you don't want to be sealed by moving or covering with a tarp. Prep the surface by gently removing any stains with a mild soap or Restore-N-Prep (sold separately) for best results. Using a hand-pump garden sprayer, apply at least two heavy coats of sealer to the surface, allowing it to dry to the touch between coats. Clean up any overspray with a clean damp cloth.

Rainguard Water Sealers is committed to innovation and sustainability. Since 1969, they have been manufacturing architectural and industrial coatings that are designed to “wrap” the exterior of buildings and structures. They now bring this same technology to consumers in their ready-to-use and concentrated DIY formulations, providing a variety of high-performance sealers for your home. All their waterproofing solutions are eco-friendly and non-toxic, safe to use around people, pets, and plants.

Pros

  • Penetrates deep into the surface and inhibits moisture damage
  • Creates a long-lasting filmless hydrophobic barrier against damaging elements
  • Safe to use indoors or outdoors
  • Dries to an invisible stain-resistant finish that won't alter surface texture or appearance
  • Easy and convenient to apply
  • Eco-friendly and non-toxic

6. Armor Sx5000 Penetrating Silane Siloxane Concrete Sealer And Masonry Water Repellent (5 Gal)

This professional-grade sealer is perfect for sealing a variety of surfaces, from driveways and patios to roadways and bridges. Made from non-recycled US manufactured resins, this sealer is of the highest quality and is designed to last for up to 7-10 years below the surface. It reduces damage caused by water absorption by up to 95%, making it an excellent choice for areas that are frequently exposed to water. Additionally, it won't change the look or color of the substrate, and won't leave a surface film, ensuring that the surface looks just as good as it did before it was sealed.

One of the biggest benefits of this sealer is that it ships the same day, ensuring that you can get started on your project as soon as possible. Additionally, it's fast and free, making it an excellent choice for those who are looking for a high-quality sealer at an affordable price.

Pros

  • Ships same day, fast and free
  • Reduces damage caused by water absorption by up to 95%
  • Lasts for up to 7-10 years below the surface
  • Won't change the look or color of the substrate
  • Professional grade – used to seal everything from driveways and patios to roadways and bridges
  • Made from non-recycled US manufactured resins

7. Porous Stucco Water Repellent – Rain Guard

This product offers a satisfaction guarantee of up to five years against surface damage caused by rain, snow, and ice. It is specially formulated to not alter the surface appearance or leave a film, ensuring a natural look. The advanced UV stabilizers in the formula also provide long-lasting protection against yellowing.

Applying this product is easy and hassle-free, as it can be done with a sprayer, brush or roller. No maintenance is required after application, making it a convenient choice for those who want to protect their surfaces without spending too much time on upkeep.

Additionally, this product is safe for use around people, pets, and plants, making it a great choice for homeowners who want to protect their outdoor surfaces while keeping their loved ones and surroundings safe.

Pros

  • Satisfaction guarantee of up to five years against surface damage from rain, snow, and ice
  • Does not alter surface appearance or leave a film
  • Advanced UV stabilizers provide long-lasting protection against yellowing
  • Easy to apply with a sprayer, brush or roller
  • No maintenance required
  • Safe for use around people, pets, and plants

8. Pentair 360040 Kreepy Krauly Suction-Side Inground Pool Cleaner, Concrete/gunite Only (Flat Seal)

The Drop Down Dive Float Directional System is a highly efficient tool that helps to guide the cleaner throughout the entire pool, ensuring great cleaning coverage. This system is designed to work from the water line to the pool bottom. The automatic valve of this system regulates water flow to set the ideal travel speed for more thorough cleaning. The cleaner wings help to channel leaves, dirt and debris directly into the filtration system, resulting in a cleaner pool. Additionally, the roller strap maneuvers the cleaner around steps and ladders for uninhibited cleaning. The original design of this system ensures years of dependable service, as it has only one moving part and does not require any wheels or gears to be replaced.

If you want to keep your pool clean and hygienic, the Drop Down Dive Float Directional System is a must-have. It is easy to use and maintain, and it delivers excellent cleaning results every time. Whether you have a small or large pool, this system is designed to handle it all. With its automatic valve and cleaner wings, you can be sure that your pool will be free from dirt, debris, and other contaminants. The roller strap of this system is also a great addition, as it allows the cleaner to move around steps and ladders without any problems. Overall, this is an excellent product that is worth investing in if you want to keep your pool in top condition.

Pros

  • Efficient tool that helps guide cleaner throughout the entire pool
  • Automatic valve regulates water flow for more thorough cleaning
  • Roller strap maneuvers cleaner around steps and ladders
  • Cleaner wings channel leaves, dirt and debris directly into filtration system
  • Original design ensures years of dependable service

9. Chapin International – 19069 3.5-Gallon Stainless Steel Handheld Sprayer

The 3.5-Gallon Tri-Poxy tank is highly durable and ideal for most professional concrete applications and extreme chemicals, including Acetone, Naphtha, Xylene, and Toluene. The tank features a 4-inch wide mouth opening for easy filling and cleaning. The brass pump, wand, nozzle, and shut off with a lock-on feature allow for continuous spraying. In addition, this sprayer is equipped with chemical-resistant seals and gaskets designed to handle a variety of chemicals. The unique Tri-Lock seal feature ensures a tight and secure fit for the pump cap.

Pros

  • Durable 3.5-Gallon Tri-Poxy tank
  • 4-inch wide mouth opening for easy filling and cleaning
  • Compatible with most professional concrete applications and extreme chemicals
  • Brass pump, wand, nozzle, and shut off with lock-on feature for continuous spraying
  • Chemical-resistant seals and gaskets designed to handle a variety of chemicals
  • Unique Tri-Lock seal feature ensures a tight and secure fit for the pump cap

10. Biswing's 15" Stainless Steel Power Washer Kit

The Professional Surface Cleaner is an ideal attachment for pressure washers that provides a commercial grade cleaning area of 15 inches wide. Its hover action makes surface cleaning faster and more effective than nozzles alone. This attachment is perfect for cleaning stubborn stains on large flat surfaces such as patios, driveways, decks, and sidewalks, but can also be used on vertical surfaces like brick walls, stucco, and other siding.

This package includes a 15-inch stainless steel surface cleaner, a 15-inch extension wand, two replacement nozzles, a thread seal tape, four O-rings, and a nozzle cleaner. The Surface Cleaner has a working pressure of up to 4000 PSI, and requires a minimum pressure of 2000 PSI and a minimum flow rate of 1.8 GPM, with a maximum flow rate of 3.7 GPM.

The Surface Cleaner's heavy-duty bearing and durable stainless steel construction make it long-lasting. It has a 1/4" quick plug, making it easy to connect with the included pressure washer lance or other 1/4" quick connect fitting. A filter is built into the entrance to prevent the blockage of impurities. The Surface Cleaner can be used with most gasoline pressure washers.

The Surface Cleaner is highly efficient and can reduce cleaning time by up to 60% compared to conventional nozzles. Its dual pressure water jets spin rapidly, breaking up dirt and grime without streaking or striping surfaces. It cleans large surfaces up to 5x faster than a standard nozzle.

Please note that the Surface Cleaner is not compatible with garden hoses or water hoses. The wand is a 1/4" thread quick connect plug, and if it is not suitable for the connector of your pressure washer gun, please purchase the adapter coupler connection separately.

Pros

  • Professional grade cleaning area of 15 inches wide
  • Hover action makes surface cleaning faster and more effective than nozzles alone
  • Can be used on large flat surfaces and vertical surfaces
  • Heavy-duty bearing and durable stainless steel construction
  • Highly efficient and can reduce cleaning time by up to 60%
  • Dual pressure water jets spin rapidly, breaking up dirt and grime without streaking or striping surfaces

Cons

  • – Not compatible with garden hoses or water hoses
  • – Adapter coupler connection may need to be purchased separately if the wand is not suitable for the connector of your pressure washer gun

Best Water Sealer For Concrete FAQs

Can a water sealer for concrete be applied to surfaces that have already been stained or painted?

Yes, a water sealer for concrete can be applied to surfaces that have already been stained or painted. However, it is important to note that the sealer will not penetrate the surface if it has been painted or stained, and will only sit on top of the coating. This may cause the sealer to be less effective in preventing moisture penetration and may also cause the surface to become slippery when wet.

To ensure the best results when using a water sealer on a painted or stained concrete surface, it is important to first clean the surface thoroughly to remove any dirt, debris, or other contaminants. Next, it is recommended to test a small area of the surface with the sealer to ensure compatibility with the existing coating. If the sealer is compatible, it can then be applied according to the manufacturer's instructions.

Overall, while a water sealer can be applied to surfaces that have already been stained or painted, it is important to take the necessary precautions to ensure compatibility and effectiveness.

Can water sealers for concrete prevent damage from freeze-thaw cycles?

Yes, water sealers for concrete can prevent damage from freeze-thaw cycles. When water enters the pores of concrete, it can freeze and expand, causing the concrete to crack and deteriorate over time. Water sealers are designed to prevent water from penetrating the surface of the concrete, which in turn prevents damage caused by freeze-thaw cycles.

There are different types of water sealers available in the market, ranging from penetrating sealers to film-forming sealers. Penetrating sealers work by penetrating the surface of the concrete and forming a barrier against moisture, while film-forming sealers create a protective layer on the surface of the concrete. Both types of sealers can be effective in preventing damage from freeze-thaw cycles, but it is important to choose the right type of sealer based on the specific needs of your project.

Overall, using a water sealer for concrete is a wise investment, especially in areas with harsh weather conditions that are prone to freeze-thaw cycles. By preventing water from penetrating the surface of the concrete, you can extend the lifespan of your concrete structures and save money on costly repairs in the long run.

How long does a water sealer for concrete last before needing reapplication?

A water sealer for concrete is essentially a protective layer that is applied to prevent water damage and staining on concrete surfaces. The lifespan of this sealant can vary depending on several factors, such as the quality of the product, the application process, and the level of exposure to water and other elements. Generally, a good quality water sealer can last anywhere from 2-5 years before it needs to be reapplied. However, in areas with extreme weather conditions or heavy foot/vehicle traffic, the lifespan may be shorter. It is important to note that regular maintenance and cleaning can also extend the lifespan of the sealer. When the time comes to reapply the sealant, it is important to properly prepare the surface by cleaning and removing any old sealant before applying the new layer. This will ensure the best results and maximum protection for your concrete surfaces.

Is it necessary to use a water sealer for concrete if the surface is already coated with a concrete sealer?

It is not necessary to use a water sealer for concrete if the surface is already coated with a concrete sealer. This is because concrete sealers are specifically formulated to provide protection against water and moisture. They create a barrier on the surface of the concrete that prevents water from penetrating into the material. When applied correctly, concrete sealers can protect the concrete from a variety of environmental factors, including water, UV rays, and stains.

However, it is important to choose the right type of concrete sealer for the specific application. There are different types of concrete sealers available, including penetrating sealers, acrylic sealers, and epoxy sealers. Each type of sealer has its own unique properties and benefits, so it is important to choose the right one for the specific application.

If you are unsure about whether or not to use a water sealer for your concrete surface, it is best to consult with a professional concrete contractor. They can help you choose the right type of sealer for your specific application and ensure that it is applied correctly to provide the best possible protection for your concrete surface.

What is the best water sealer for concrete surfaces?

When it comes to concrete surfaces, it is important to protect them from water damage. The best water sealer for concrete surfaces is one that provides long-lasting protection against water penetration and damage. There are many options available in the market, but the best one depends on the specific needs of your concrete surface.

One of the most popular water sealers for concrete surfaces is the siliconate sealer. This sealer penetrates deep into the concrete surface and forms a barrier that repels water and other liquids. It is ideal for use on concrete driveways, patios, and sidewalks, as it provides long-lasting protection against water damage, stains, and fading from UV rays.

Another option is the acrylic sealer, which is a water-based sealer that forms a protective film on the concrete surface. It is easy to apply and dries quickly, providing a glossy finish that enhances the appearance of the concrete. This sealer is ideal for use on decorative concrete surfaces, such as stamped or stained concrete.

Ultimately, the best water sealer for concrete surfaces depends on the specific needs of your surface. It is important to choose a high-quality sealer that provides long-lasting protection against water damage, stains, and other types of damage.

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