Best Basement Waterproofing Sealer: Top 5 Model Revealed

Best basement wall sealers

Basements can be a huge source of water damage and loss, costing homeowners thousands of dollars in repairs. Even though most of us know to look out for signs of a wet basement, like water stains or dampness, there are other ways water can get into your home.

One way is through cracks in the basement foundation. As concrete ages, it can start to crack and crumble, letting water seep in. That’s why you need to waterproof your basement with a sealer. The best basement waterproofing sealer will not only fill in cracks and holes but also prevent new ones from forming.

Let’s take a look at the top five basement waterproofing sealers. We will also provide a buying guide with all the information you need to know about these products.

Gorilla Waterproof Patch and Seal Liquid

The Main Features Are:
👍 Dries crystal clear
👍 Flexible, rubberized coating
👍 Temperature and UV resistant
👍 Watertight and airtight seal
👍 Self-leveling formula

Laticrete Hydro Ban Waterproofing Membrane

The Main Features Are:
👍 Anti-fracture protection
👍 ANSI A118.10 and A118.12
👍 IAPMO approved
👍 Lighter color

Liquid Rubber Concrete Foundation and Basement Sealant

The Main Features Are:
👍 Nature-friendly
👍 No solvents or VOC
👍 Non-flammable
👍 No mixing is required
👍 900% elongation support

Can You Waterproof a Basement from The Inside?

Foundation walls sealer

Yes. There are several different methods of waterproofing a basement from the inside, and the best method for your home will depend on the specific needs of your basement.

Some common methods include installing drainage systems, sealing cracks and gaps, and applying waterproof coatings to walls and floors.

Taking steps to waterproof your basement from the inside can help protect your home against water damage and create a safer, more comfortable living space.

Should I Seal Basement Walls Before Finishing?

Waterproofing basement walls sealer

Before considering any type of basement finishing, it is essential to ensure the space is properly waterproofed. Waterproofing protects against mold and mildew and helps prevent serious home damage. A leaking basement can quickly cause problems like rotting wood and foundation issues.

Also, it is crucial to ensure that the basement is properly sealed before beginning any type of work. There are a number of different waterproofing methods available, and a professional contractor can help you choose the best option for your home.

By taking this important step, you can rest assured that your basement will be safe and dry for a long time.

What Is the Best Sealer for Waterproofing Basements?

Concrete walls sealer

There are a few different types of waterproofing sealer available on the market, and the best type for your needs will vary. Some common options include penetrating sealers, surface sealers, and membrane-based sealers.

  • Penetrating sealers are designed to penetrate into the pores of the concrete and create an invisible barrier that helps prevent water from seeping in.
  • Surface sealers form a protective layer on the surface of concrete and help repel water.
  • Membrane-based sealers are applied as a liquid or membrane and work to create a waterproof barrier on the surface of the concrete.

The following are two of the popular basement waterproofing sealers available on the market:

Gorilla Waterproof Patch and Seal Liquid

Gorilla waterproof patch and seal liquid coating that can be used to seal out water, air, and moisture. It is easy to apply, dries crystal clear and transparent, and is temperature and UV-resistant.

This sealer can be used on roofs, gutters, flashing, chimneys*, skylights, PVC pipe joints, RVs, windows, and DIY projects. The product should not be submerged continuously or used below the water’s surface.

What Makes This Product Helpful?

Gorilla basement waterproofing coating sealant is good for repairing small cracks and surface gaps. The self-leveling formula ensures a watertight seal, and the liquid can be applied by roll, trowel, dip, brush, or pour.

This product cures at 24 to 48 hours and is paintable with latex and oil-based paints. Plus, it is temperature and UV-resistant for lasting repairs. Store the excess product in a cool, dry place with a tight lid for future use.

Good Things:

  • Seals out water, air, and moisture
  • Stir contents for 30 seconds before applying
  • Can be applied by brush, roll, trowel, dip, or pouring
  • Covers small gaps and cracks smoothly
  • Dries paintable and temperature/UV resistant


  • The sealer may be too thick for some users

Laticrete Hydro Ban Waterproofing Membrane

The Laticrete hydro ban waterproofing membrane is a great choice for waterproofing your basement or other areas that may be susceptible to water damage. This membrane is thin and can be installed directly on metal, PVC, and ABS plumbing fixtures without needing fabric.

It bonds quickly and cures rapidly, so you can start tiling immediately. The hydro ban membrane is also anti-fracture protected, meaning it can withstand up to 1/8 inch of movement over shrinkage or other non-structural cracks.

What Makes This Product Helpful?

Laticrete basement waterproofing sealer is a great product for waterproofing your basement. It goes on easily and is thick, which helps to seal any cracks or gaps in the concrete. It also has a very strong smell, so wear a mask while applying it.

The best part about this product is that it doesn’t require the additional fabric, like Laticre’s Hydro Barrier. And it’s easy to see any spots you accidentally missed while rolling it on. Mix it for at least 10 minutes to keep the consistency easy to work with.

Good Things:

Urologen legen in erster Linie nahe, dass ihre Patienten ihren Lebensstil ändern. Nicht nur, dass die Ergebnisse einer Studie über das Verhältnis zwischen Ernährung und Potenz gezeigt haben, dass eine gesunde Ernährung das Risiko einer erektilen Dysfunktion reduziert und helfen die sexuelle Langlebigkeit aufrechterhalten

  • Seamless waterproofing membrane
  • Bonds directly to substrates
  • Allows for flood testing in 2 hours
  • Does not require the use of fabric
  • No solvents and non-flammable


  • You won’t have much time to rest between coats since it dries so fast

These two basement waterproofing sealers are famous for protecting your basement from water damage. If you have any cracks or gaps in your concrete, these products will help to seal them and prevent water from seeping through.

What Is the Best Sealer for Concrete Basement Walls?

Quality penetrating concrete sealer

Concrete basements are made to last, but they can still succumb to the effects of water and moisture. A concrete sealer can help to protect your basement walls from water damage by providing a barrier against moisture and vapor.

The following three concrete basement wall sealers are our other picks for the best sealers on the market:

1. Liquid Rubber Concrete Foundation and Basement Sealant

Liquid Rubber concrete foundation and basement sealant is a polymer-based sealant that is easy to apply and can be used indoors or outdoors. It is highly flexible and will not fail due to adhesion, cracking, or tearing.

It can be applied by brush, roller, or piston paint sprayed at high pressure and is non-toxic to humans and pets. And because it is water-based, it contains no solvents, VOCs, or harmful odors.

What Makes This Product Helpful?

Liquid Rubber basement waterproofing sealer prevents water from entering your basement. It is easy to apply, and once it cures, it creates a watertight seal. This makes it a perfect choice for anyone who is experiencing a leaky basement wall or building foundation.

Plus, with its highly flexible properties, all your hard work won’t be destroyed by minor movements. And if you’re still worried about movement, you can use extra protection in the form of Liquid Rubber Seam Tape.

Good Things:

  • Creates a watertight seal
  • Perfect for leaky basement walls
  • Can be used for a variety of projects
  • It is easy to apply by brush or roller
  • Highly flexible once cured


  • Too much use can make the surface dark and tacky
  • The bucket lid might be difficult to reopen

2. Essential Values Concrete Sealer for Basement Floor

Essential Values concrete sealer for a basement floor is a high-quality, industrial-strength sealer designed for concrete floors and surfaces. It penetrates deep into the concrete to provide long-lasting protection against water and moisture infiltration.

The sealer also forms a tough, protective layer that resists fading, cracking, and peeling. It is ideal for use in basements, garages, and other areas where concrete is exposed to water and moisture.

This sealer is also perfect for use on driveways, patios, sidewalks, and any other concrete surface that needs protection from the elements. It provides a high-gloss finish that resists staining and fading.

What Makes This Product Helpful?

Essential Values basement waterproofing sealer is important because it helps to protect your basement from water damage. It creates a sealant layer that protects your basement from water seeping, which can cause extensive damage over time.

Also, this waterproofing sealer can help improve your basement’s appearance by giving it a finished look. It also makes it easier to clean your basement, as dirt and dust are less likely to adhere to the surface.

Good Things:

  • Prevents efflorescence and staining
  • Seals and waterproofs concrete and masonry
  • Prevents efflorescence, freeze/thaw damage, and spalling
  • The breathable formula prevents mold and mildew growth
  • Non-toxic, safe for people, pets, and plants


  • You have to coat it three times for waterproofing

3. RadonSeal Deep Penetrating Concrete Sealer

RadonSeal deep penetrating concrete sealer may be the perfect product if you want to waterproof your concrete. This deep penetrating sealer is made with silicate and is non-toxic, non-flammable, and has zero VOCs.

It is also easy to apply by spraying or rolling it on. And because it penetrates the concrete rather than leaving a coating, there is no need for reapplication. RadonSeal is also permanently effective, meaning you’ll get long-lasting results.

What Makes This Product Helpful?

RadonSeal deep penetrating concrete sealer can be used to waterproof basements and other concrete surfaces. It works by absorbing into the surface of the concrete and chemically reacting, bonding, and naturally sealing the matrix of the concrete.

Due to this, it can prevent water wicking, vaporization, capillary water seepage, and soil gases from passing through the porous concrete. Also, RadonSeal can harden outdoor and indoor concrete, protect it from cracking and other damage, and increase its strength.

Good Things:

  • Apply by spraying or rolling
  • Deeply penetrates the concrete
  • Protects concrete from radon gas
  • Aids in reducing radon infiltration
  • Does not trap water vapor


  • If the sealer isn’t used right, concrete can powder

With these three basement waterproofing sealers, you should be able to find one that meets your needs. These sealers will do the trick if you need something to prevent water damage, improve your basement’s appearance, or make it easier to clean.

A Comparison of the Best Basement Wall Sealer

ProductSealer MaterialColorCompatible Material
Gorilla 105367RubberClearMetal, Concrete, Wood, and more
LATICRETE 9255-0005-2Rubber PolymerGreenTile Brick and Stone
Liquid Rubber 20602PolymerBlackWood, Concrete, and Metal
Essential Values Concrete SealerAcrylicClearConcrete, and Stone
RadonSeal 101SilicateClearConcrete

How to Choose the Best Basement Waterproofing Sealer?

Sealer for concrete basement foundations

Choosing a basement sealer can be tricky. It’s hard to figure out which product is right for you when so many are out there. Here are some things to keep in mind when choosing a basement waterproofing sealer:

Type of Concrete You Have

When you are looking to buy a basement waterproof sealer, one of the first things that you need to do is determine the type of concrete that you have. The two most common types of concrete are poured and block.

Poured concrete is made by pouring a mixture of cement, sand, gravel, and water into a mold. It is then left to harden. Block concrete is also made by layering blocks with cement, sand, and gravel. It is also left to harden.

Each type of concrete has its benefits and drawbacks. Poured concrete is stronger but more expensive. Block concrete is less expensive but not as strong. Other types of concrete, such as stamped and stained concrete.

Knowing the type of concrete you have will help you choose an industrial-grade waterproofing sealer for your needs.

Location of the Concrete

This matter is particularly relevant as this will determine how well the sealer adheres to the surface. For example, if the concrete is located in an area with high humidity, it is imperative to choose a sealer that is designed for wet climates.

Likewise, in locations prone to extreme temperature changes, it is important to select a sealer that can withstand both heat and cold. You can also use a sealer that is specifically designed for basement floors.

Sealers come in different formulations, so read the label carefully before making your purchase.

The Appearance of the Concrete

The concrete’s appearance will also play a role in your decision-making process. For example, if you are looking for a sealer that will improve the look of your basement, opt for a sealer that offers a high-gloss finish.

If you are more concerned with protecting your concrete from water damage, you will want to choose a clear sealer with a low sheen. Some sealers come in different colors if you want to add a pop of color to your basement.

Breathable and Non-Breathable Sealers

Waterproofing paint concrete sealers

Before you buy a basement waterproofing sealer, you also need to determine whether you need a breathable or non-breathable sealer.

If your basement is finished, then you need a breathable sealer so that moisture can escape, but water cannot come in. In case your basement is not finished, then you need a non-breathable sealer so that water cannot come in and moisture can escape.

You also need to take into account the type of foundation you have. If you have a poured concrete foundation, a non-breathable sealer is required. For a block foundation, you can use either breathable or non-breathable sealant.

Make sure to read the label carefully before buying the sealer to get the right one for your needs.

Safe for People And Pets

When you’re in the market for a basement sealing sealer, it’s important to consider the safety of people and pets who will be using the space. Many sealers contain harmful chemicals that can be toxic if inhaled or ingested.

Some products also emit strong odors that can irritate the lungs. Moreover, many sealers are flammable, so it’s important to read labels carefully before purchase. You can also ask your local hardware store for safe and effective sealers recommendations.

Attractive Finish

The finish is what will determine how attractive the sealer is when it is applied. There are two main types of finishes: glossy and matte. Glossy finishes are typically more expensive, but they also provide a higher level of protection against water damage.

Matte finishes are less expensive, but they may not be as effective at preventing water damage. You will need to decide which type of finish is right for your needs.

If you are concerned about water damage, then you may want to choose a glossy finish. It may be a good idea to choose a matte finish if you’re worried about cost.

The Application Method

For basement waterproofing sealers, it is crucial to consider the desired application method. Some sealers can be applied with a brush or roller, while others must be sprayed. Some products can be applied to wet surfaces, while others require the surface to be dry.

Some sealers are designed for interior use, while others are meant for exterior surfaces. Carefully read the instructions on the product label to determine the best application method for your needs.

By now, you should better understand the different types of basement waterproof sealers available on the market. With this knowledge, you can make an informed decision about which product suits your needs.

How to Seal and Waterproof a Basement?

How to Seal and Waterproof a Basement

Now that you know the basics about basement waterproof sealers, it’s time to learn how to apply them.

  • Using a pressure washer or garden hose, clean the surface of your concrete basement floor.
  • Next, you will need to repair any cracks or holes in the surface with hydraulic cement or epoxy. Once the cracks are repaired, you can begin to apply the sealer.
  • If you use a brush or roller, start at one corner of the room and work your way across the floor in even strokes.
  • With a sprayer, start at the room’s perimeter and fill in the middle. Make sure to overlap each stroke by about 6 inches.
  • Once the sealer is applied, you must wait for it to dry completely before walking on the surface. Depending on the product, this can take anywhere from 24 to 72 hours.

You should also avoid getting the sealer wet during this time. Once the sealer is dry, your basement will be better protected against water damage.

How to Waterproof a Wet Basement?

When your basement is wet, it’s not only a pain but can also lead to serious damage to your home. Waterproofing your basement with a sealer is a great way to prevent moisture damage. Here’s how to do it:

Identify the source of the water first. If you have a leaky pipe or a crack in the foundation, you’ll need to fix that before you start waterproofing. Once the source of the water is fixed, clean the area thoroughly. Any dirt or debris will just create more work for you later on.

Next, apply the sealer according to the manufacturer’s instructions. Be sure to follow all directions carefully, as using too much or too little sealer can decrease effectiveness. You’ll want to apply the sealer in multiple coats, allowing each coat to dry completely before applying the next.

Once the final coat of sealer is dry, you’ll need to monitor the area closely for any signs of water infiltration. Check for leaks regularly and reapply the sealer to keep your basement dry and healthy.

How to Seal Exterior Foundation Walls?

Waterproof basement walls sealer

Applying a sealer to your basement’s exterior walls is a great way to protect them from the elements and prevent moisture damage. Here are the steps you’ll need to take to seal your basement walls properly:

  1. Start by thoroughly cleaning the foundation walls with a power washer. This will remove any dirt, dust, or debris that could interfere with the sealer’s adhesion.
  2. Once the walls are clean, apply a primer with a paintbrush or roller. This will help the sealer adhere better to the wall’s surface.
  3. Once the primer is dry, it’s time to apply the sealer. You can use a brush, roller, or sprayer to apply the sealer. Be sure to follow the manufacturer’s instructions for the best results.
  4. Allow the sealer to dry completely before painting or staining the walls if desired. Sealing your basement walls is an easy and effective way to protect them from moisture damage. These simple steps can help keep your basement in good condition for a long time.

Can I Seal My Basement Myself?

Yes, you can. One of the main benefits of sealing your basement yourself is that it can save you a lot of money. In spite of this, it is crucial to note that not all sealers are created equal. Some are more effective than others, and some may not suit your basement.

Also, applying the sealer incorrectly can cause more harm than good. For these reasons, it is important to do your research and ensure that you are using the best possible product for your needs.

Is It Better To Waterproof Basements From Inside Or Outside?

When it comes to waterproofing your basement, there are two main options: exterior waterproofing and interior waterproofing. Both have benefits and drawbacks, so it’s essential to weigh your options carefully before deciding.

Exterior waterproofing involves excavating the soil around your home and repairing any leaks with a powerful sealant. This can be costly and time-consuming, but it’s often the most effective option for preventing wet basements.

Interior basement waterproofing systems are less invasive and can be installed without major renovations. These systems work by redirecting water away from your basement walls and floors, preventing moisture from entering the space.

Ultimately, the best way to waterproof your basement is to consult a professional contractor who can help you choose the right option for your home.

Is It Worth to Waterproof the Basement?

The answer is yes. Waterproofing your basement will help prevent mold growth, which can lead to respiratory and other health issues. It can also help to improve the value of your home.

Basements are often one of the first places buyers look when considering a new home, and a dry, well-maintained basement is sure to impress potential buyers. So if you’re looking for a way to improve the safety and value of your home, waterproofing your basement is a wise option.

But to do that, you must select the best basement waterproof sealer that will both waterproof and help improve your home’s value. We’ve listed several sealers to choose from, so finding the right one is easy.

Contact us today to learn more about our basement waterproof sealers selection or find out which one is right for you.

Best Basement Waterproofing Sealer: Top 5 Model Revealed
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