Best Sealant for Basement

What is the Best Sealant for Basement Walls?

Your basement is the essential room in the house because it is part of the foundation and can achieve numerous purposes. With this in mind, it is vital to take great care of the basement by sealing its walls and keeping moisture out. This solution is best implemented in buried basements because they are prone to water seeping through the walls. Moisture accumulation can cause the growth of mold, fungi and cracks. We have found the best way to seal basement walls below for you!

RadonSeal For Your Basement

The RadonSeal sealant is applicable upon brick or concrete to keep the water and moisture out. It can be applied by general contractors, architects, waterproofing experts, and Do It Yourself (DIY) house owners. Established in 1997, RadonSeal has been used to perform industry-leading sealing in basements.

With RadonSeal, you can experience high-strength sealing for your basement. It applies cutting-edge technological methods and remains results-oriented throughout. It is designed for commercial grade usage so you can expect long term benefit from its application. It is Eco-friendly and does not have any corrosive elements that can harm you during or after application.

should seal your basement

The results of utilizing RadonSeal can last for decades, so you will never suffer from water seepage or moisture accumulation in your basement afterward. The majority of other basement sealants can keep water and moisture out but still allow Radon gas to seep. Fortunately, RadonSeal does not allow this to occur because it is the only sealant that can keep Radon gas out. Even better, you enjoy a full money-back lifetime warranty!

Reasons why you should seal your basement

Guard Against Flooding

Buried basements are highly prone to flash floods. As indicated by the National Flood Insurance Program (NFIP), this threat is grave, which points out that flooding causes $3 billion in damage claims annually. As a result, it is necessary to protect your basement from flooding by applying sealing its walls.

Prevent the Growth of Mold and Mildew

Whenever there’s wet weather around your homes, such as rain or snow, water can seep into your basement through cracks and crevices. Over time, this can cause moisture accumulation in your basement. With this condition, mold and mildew can grow and cause you to suffer from respiratory diseases like coughing or asthma. These irritants can also cause you to experience skin lesions or aggravate your allergy. Sealing the walls of your basement can prevent this.

Keep Cracks FFrom Forming in Your Basement Foundation

Water droplets can get stuck in the small porous spaces within your foundation. As the surrounding temperature rises or falls, the droplets can expand or contract, causing cracks that can extend and threaten your house’s structural integrity. They can be avoided by sealing the walls of your basement.

Keep Energy Costs Low

If moisture is seeping through your basement walls, the interior humidity will rise steadily during the Summer. When this occurs, it becomes more expensive to cool down the house. If there are some cracks in your foundation, cold air can seep into the basement during the Winter. Similarly, this makes it expensive to warm your house. Applying sealant in the basement averts these problems and ensures that you save money on electricity bills.

Additional Value for Your Home

A house where the basement has been sealed has a higher sale value than one that hasn’t. Implementing sealant on the basement walls ensures that water does not seep through the wall’s cracks or your foundation. Doing so represents proactive protection for your house and delivers a favorable Return On Investment (ROI). Buyers always want to invest in houses with robust basements and RadonSeal can help ensure that your home meets this stringent requirement.

Versatile nature of RadonSeal

You can use RadonSeal to seal up concrete and brick walls in your basement because it is valid on all types of masonry. The application method of RadonSeal is straightforward so that you can accomplish it on your own. Furthermore, the product exceeds your expectations afterward by providing long-lasting sealing and waterproofing for your basement walls.

RadonSeal can be used in residential and commercial basements by engineers, architects, contractors, Radon mitigation operators, floor experts and Do It Yourself (DIY) enthusiasts. It is perfect for the walls and floors of your basement. It can also be applied upon cinder blocks, concrete foundations, garage floors, crawl spaces, porous tiles, chimneys, and pool decks.

RadonSeal Product Range

There are numerous products under the RadonSeal umbrella including:

RadonSeal Concrete Sealer: It is used for sealing poured concrete basement floors and walls as well as garage slabs.

LastiSeal Concrete Stain & Sealer: Through this product, you get a combination of stain and sealer that adds a dash of color and waterproofs at the same time.

LastiSeal Brick & Concrete Sealer: When your basement walls are made of brick, LastiSeal Brick & Concrete Sealer is your best bet because it strengthens and waterproofs at the same time.

Dry way Water-Repellent Concrete Sealer: Using this product can make your concrete basement walls repel water and protect them from freeze-thaw action.

Ion-Bond Armor: Through this sealant, you can keep moisture from seeping through your industrial concrete basements. After application, the Ion-Bond Armor creates a subsurface waterproof barrier that keeps surface water and negative side pressure.

DIY Foundation Crack Repair kit: Fully applicable for your basement foundation, this kit helps you fill up any cracks in your basement walls or foundation, thus restoring structural integrity.


It is essential to seal your basement walls using RadonSeal because moisture can seep through and cause cracks. Through this solution, you can eliminate the possibility of water passing through to cause mold or mildew. Doing so keeps your basement walls structurally sound and guarantees robustness throughout the life of your home. It also ensures safety for occupants and property stored in the basement. Even better, utilizing RadonSeal adds value to your home!

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