I Tested And Reviewed 8 Best Waterproof Paint For Concrete Basement Walls (2023)

I recently used this paint on my concrete floor in my garage studio, even though it's not recommended for floors. Surprisingly, it turned out really nice after applying two coats. The finish is modern, clean, and white, which I absolutely love. However, I did notice that footprints from shoes or boots are visibly left on the floor after walking on it, which is likely why it's not recommended for floors. To solve this issue, I purchased the Kilz low gloss concrete sealer and applied a layer of that on top. This final step made a significant difference and overall, I'm extremely pleased with how it made my floor look amazing.

We used this paint to cover a cinder block wall in our garage. Initially, one can only covered 75% of the wall, as the block absorbed a lot of paint. We went to Lowes to buy another can, but they only had the Valspar brand available. After using both brands, I can confidently say that Kilz is the superior product. Not only is the Kilz paint whiter and brighter, but it's also thicker and provides better coverage. We had to use the entire can of Valspar just to finish the remaining 25% of the wall, and it was more expensive too. My recommendation is to go with Kilz for better results and value.

We decided to paint our slightly damp basement, which tends to get wet during heavy rain. This paint has held up well in that environment, and we even had it tinted to a light blue instead of plain white. Before painting, we thoroughly cleaned the block walls with an air compressor and used a household paint sprayer for an efficient and quick job. Overall, we are satisfied with the outcome and the paint's durability in our basement.

I used ten gallons of this paint to apply two coats on my twenty-year-old poured basement wall. After the second coat, the basement seemed to "light up" with a noticeable difference in the appearance and feel of the concrete wall. The wall feels dry to the touch and no longer has that rough "concrete" texture. This paint serves as a good long-term treatment or can be used as a light sealer before adding an interior wall. I highly recommend it for its transformative effects.

We purchased 5 gallons of this paint to cover our basement walls. We used a brush to fill larger cracks and rolled the main areas, making the process very easy. Recently, we noticed some water seeping where we missed, but after quickly soaking up the water, we applied this paint to the area and it stopped the seeping. I absolutely recommend this product, and we'll always keep a can on hand for any future touch-ups or repairs.

I recently used the Liquid Rubber Primer for a project and I must say, it exceeded my expectations. This primer is an essential step before applying the liquid rubber, as it acts as a bonding agent between the material and the liquid rubber.

Firstly, I was impressed with the coverage of the primer. I ordered a gallon for my project, which covered an area of 267 square feet. Surprisingly, I only used about 1/3 of the gallon, making it a cost-effective choice. The consistency of the primer is similar to non-fat milk, and although it is runny, it dries clear.

In terms of application, I took the necessary steps to ensure a successful outcome. I thoroughly cleaned the surface with a pressure washer and removed any dust with a blower. I also used blue painters tape to mask off surrounding areas and used a level and pencil to draw lines on the posts to ensure proper sealing.

The primer dried relatively quickly, even in direct sunlight, which allowed me to apply the liquid rubber within a short period of time. It is also worth mentioning that the primer has a minimal odor, making the application process more pleasant.

I found that using a regular paint brush for edging was a bit challenging due to the runny consistency of the primer. However, I managed to apply two coats and achieve the desired thickness. For the rest of the area, I used a 3/8 nap roller, which made the application process much smoother.

The instructions recommend applying the liquid rubber within 24 hours of using the primer, and preferably before nightfall if dew is forecasted overnight. I followed these guidelines and had no issues with the primer's performance.

Please refer to my review for the Liquid Rubber Waterproof Sealant for information on Phase II of the project.

I recently tried the Gorilla Patch and Seal product on my leaking bird bath and I must say, I am impressed with the results. While the product goes on thick, similar to Flex Seal, it does a great job of sealing and filling cracks.

Initially, I was a bit disappointed that I could only get the product in black, as I needed to paint my bird bath blue. However, this turned out to be a minor issue as the final painted finish looked great. It's worth noting that the product does leave a somewhat tacky finish even after drying, so it may attract dirt if left unpainted.

Applying the Gorilla Patch and Seal was a breeze, although I recommend using a throwaway paint brush as it can be difficult to clean off. The curing time was a bit longer than expected, taking several hours to form a "skin" and a full cure of 24-48 hours. However, the end result was a bird bath that holds water and no longer leaks.

I also had the opportunity to use this product on my large concrete fountain, which tends to crack every year. The Gorilla Patch and Seal worked wonders, saving my fountain time and time again. It effectively sealed the cracks and prevented any water leakage. Just make sure to let it dry for at least 9-10 hours before use and wear gloves during application.

I recently purchased the Gorilla Waterproof Patch & Sealant to fix some leaking issues in my home, and I must say, I am highly impressed with this product. It lives up to its claims and has a few additional applications that make it truly awesome.

Firstly, I used this sealant for gutter repair. While it is recommended to apply it on the inside of the gutter for best results, I found that using it on the side of the gutter was equally effective. This was especially convenient for white gutters, as the paste seamlessly filled in gaps without the need for climbing ladders or cleaning out the inside. The thick consistency of the paste made it easy to apply and smooth out. Additionally, the dried paste is paintable, although not necessary for white on white repairs. I was able to complete the gutter repair in less than 2 minutes, thanks to the efficiency of this product.

Secondly, I utilized the Gorilla Patch & Sealant for PVC repair. I had a slow leak on a 2" PVC line, and this sealant came to the rescue. The paste was simple to apply directly onto the cleaned PVC without the need for additional primer (although I had some purple primer already present at the leak area). It effectively stopped the leak, and I didn't require a second coat. However, it is worth mentioning that a second coat can be applied if necessary.

The waterproofing and sealing properties of this product are exceptional. The paste sealed up the leaks on the first try, and I didn't experience any further issues. It does a great job of tightly sealing out water, air, and moisture. Even though the paste is thick and goopy, it can be applied upside down without any dripping. However, it doesn't level itself out on non-flat surfaces, so some extra effort may be required to ensure a smooth finish.

In terms of application, using an appropriately sized putty knife is crucial for good control of the paste. Personally, I found that a smaller putty knife worked better. The paste starts to cure once exposed to air and moisture, and it forms a skin in 15 to 30 minutes. Full cure is achieved within 24 to 48 hours.

I also appreciate the ease of application, which is even simpler than using silicone tubes that require a glue gun. The convenience and reliability of this product make it an excellent choice for various repair and sealing needs, whether it be fixing leaks around pipes or sealing gaps, holes, and cracks.

I recently had to deal with a water leakage issue in my bathroom, and Drylok proved to be the perfect solution. After giving my 96-year-old father an emergency shower in the area between the toilet and shower stall, I discovered that water had seeped underneath the wall behind the toilet, soaking the carpet in the adjoining closet. This is when I decided to use Drylok to seal the wall to the floor.

I found that Drylok was easy to work with. I made small batches to fill the three sides, and then made one last batch to smooth everything out. The workable time of the product is short, but making small batches allowed me to mix and apply it before it started setting. It was also easy to build up the layers as needed. Since I planned to install wood vinyl plank flooring over the tile, I wasn't concerned about cleaning the Drylok off the tile. I simply smoothed it out on the tile surface.

Drylok did exactly what I needed it to do. It repaired and waterproofed the hole in my shower stall, providing a solid surface for future use. I was particularly impressed by its ability to fix a cracked vintage bird bath that was leaking. The product worked beautifully, and I was even able to fix a broken seahorse on top of the bird bath.

One tip I would like to share is to use a teaspoon with a 3:1 ratio when mixing Drylok. This allows for better control since the product dries quickly. I also recommend using a plastic bowl for mixing and adjusting the consistency with a couple of extra drops to fill in cracks. It's important to mix the product at the repair area to prevent it from drying prematurely.

I am currently in the process of applying two coats of Drylok paint as a final waterproof sealant for my basement wall. This will be put to the test during the next rainstorm, and I will update my review accordingly. So far, I am satisfied with the performance of Drylok and I believe it will continue to meet my expectations.

I recently had a persistent water leakage issue in my basement that was causing significant damage. After trying various solutions, I came across this remarkable paint that completely transformed the situation. I applied it to the area where the water was seeping in and also created a protective barrier around the exterior. Despite not having the chance to repair a damaged gutter before a heavy downpour, I was astonished to find that my basement remained completely dry. This product truly exceeded my expectations.

One of the things I appreciated about this paint is its low odor, which made me feel comfortable using it in my house, especially with a 4-month-old baby. Although I made sure to paint in a separate room, I felt confident in its safety. Additionally, using the correct rollers made a significant difference in the application process. I followed the directions carefully and applied two coats on the inside and one coat on the outside for added protection.

I have struggled in the past with painting block walls using inferior products, but this paint has changed everything. It is undoubtedly the best coating I have ever used. With just 7.5 gallons, I was able to apply two coats on a 550 square feet basement wall, and the results were outstanding. This product far surpasses Drylock and other elastomeric coatings I have tried in the past. I highly recommend it to anyone facing similar issues.

One of the things that impressed me about this paint is its consistency. Despite its thick pudding-like appearance, it rolled on smoothly and evenly on the bare concrete block walls in my basement storage room. I applied one coat, allowed it to dry for 24 hours, and then applied a second coat. The room now looks clean and bright, and I couldn't be happier with the outcome. Although I haven't had it for long enough to evaluate its long-term durability, I am extremely satisfied with the results so far.

I recently completed a basement renovation project, and I have to say that Blue Max played a significant role in its success. Initially, I was skeptical of relying on Amazon reviews, as I often question their authenticity. However, after extensive research, I decided to give Blue Max a try, and I'm glad I did.

My basement had been plagued with water issues for several years, with water seeping in during heavy rainfall. This resulted in a musty and unpleasant environment, especially for my children. To address this problem, my first step was to redirect the downspouts away from the foundation using StealthFlow attachments, which I purchased inexpensively from Home Depot. This simple measure helped to mitigate the water accumulation around the basement.

Next, I had to repair the loose grout and crumbling concrete in the basement by hand using hydraulic cement. This was a tedious process but necessary to create a solid foundation. Once the repairs were complete, I applied two coats of Blue Max to the entire basement, essentially creating a waterproof barrier. I wanted to ensure that no water would penetrate the walls or floor, and Blue Max delivered on that front.

Living in North Carolina, I had to put Blue Max to the test during heavy rainstorms. To my delight, not a single drop of water entered the basement. The peace of mind this provided was invaluable, and it gave me the confidence to proceed with the next phase of the renovation.

I lagged the studs to the masonry and added drywall, ensuring that every step of the way, Blue Max was used to protect against any potential water intrusion. I even coated the studs themselves with Blue Max for added protection. To safeguard against any leaks, I left a four-inch clearance at the bottom of the drywall, preventing water from reaching it. Additionally, I covered the 6" trim molding with Blue Max before painting it white. This precautionary measure would prevent water absorption and allow me to easily replace the molding in case of a flood.

I had considered hiring contractors like DryPro, who provided estimates in the range of $12k for basement waterproofing. Their proposed solution was to allow water to enter the basement, collect it through an internal trench/gutter, and pump it out. However, this would have resulted in increased humidity, making it unsuitable for drywall installation. Instead, I opted for Blue Max and completed the entire project for around $2500, including materials.

The success of my basement renovation project has surpassed my expectations. I have transformed the space into a theater room, complete with expensive electronics and furniture. The confidence I have in Blue Max's ability to prevent water intrusion has allowed me to enjoy this space without worry.

As a homeowner and not a contractor, I wanted to share my personal experience with Blue Max. It has been a crucial component of my project's success, and I will undoubtedly use it again when renovating the other side of my basement. If you're a DIY enthusiast undertaking a similar project, I highly recommend considering Blue Max as a reliable membrane layer to protect against water damage.

I hope this review proves helpful to fellow DIY enthusiasts. Good luck with your basement renovation endeavors!

As a seasoned mason with over 30 years of experience, I cannot stress enough the importance of properly sealing all exterior masonry surfaces. Whether it's a restoration, repair, preservation, or preventive maintenance project, ensuring that masonry is "weather sealed" is not just an option, but a necessity. The harsh elements of weather, including the scorching sun of summer and the freezing temperatures of winter, can wreak havoc on masonry if left unprotected.

There are numerous proven benefits of using a sealer to protect masonry, making it a "no brainer" decision. I have personally worked on extensive repair projects that could have been avoided if the masonry had been treated with a siloxane/silane blend sealer like Micro-Seal. Whether it's concrete block, brick, natural stone, thin artificial stone veneer, stucco mortar parging, or concrete surfaces, all raw masonry, whether new or old, needs to be sealed. It is the final step in completing a masonry project.

I have kept track of numerous projects and field-tested various sealer applications at my shop location. To my satisfaction, these projects are still repelling water even after 10 plus years, demonstrating the long-lasting effectiveness of quality sealers. However, it is crucial to ensure that the existing masonry is in stable condition and any necessary repairs are addressed before applying the sealer.

In recent times, I have noticed a rise in issues related to thin stone veneer. While thin stone veneer has its advantages in the building industry, it can be problematic due to its high moisture absorption. This leads to issues such as debonding or popping off during winter freeze-thaw cycles. Additionally, excessive water wicking into interior wall systems can cause further problems like rot and mold. Sealing thin stone veneer helps prevent these issues and also protects against fading caused by UV rays.

Sealing is not only beneficial for newer masonry but also plays a vital role in preserving older masonry. Despite the excellent condition of brick homes, they can still absorb water and allow it to seep into the interior. By sealing the masonry, you can prevent exterior water intrusion, thus avoiding costly repairs. It is important to address other potential issues such as lack of weep holes for drainage and condensation buildup between walls and masonry through proper venting.