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Waterproofing the Basement Walls
Waterproofing the Basement Walls
4.9 RATING

Waterproofing the Basement Walls

Basements can be damp, wet, and gross. And if you live in a flood zone, they can get even worse. Basements aren't naturally waterproof, though…

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June 03, 2026
Waterproofing the Basement Walls

Basements can be damp, wet, and gross. And if you live in a flood zone, they can get even worse. Basements aren't naturally waterproof, though — this is often done with a product that makes the basement walls waterproof and water resistant. But as it turns out, there are various reasons why a basement requires this additional layer of protection. Focusing on protection and prevention will reduce the potential need for water damage restoration. Tidal Wave Response has these tips to waterproof the basement walls.

Causes of Wet Basements

Waterproofing the basement walls is a good way to seal up any holes or cracks that may let water into your house. Waterproofing basement walls also help to keep moisture levels down and prevent mold growth.

Waterproof basement walls can reduce the risk of flooding and other problems caused by water intrusion. Several factors can contribute to wet basements.

Cracks

Cracks in concrete walls or floors allow water to seep through the wall and gather at the bottom of your home. This is particularly common in older homes that have not been maintained properly over the years.

Unsecured Entry Points

There may be doors or windows that do not close properly or have gaps where rainwater can enter the home. This will cause water damage due to leaks from above or from below when it rains heavily outside. Your home may also be built on a slope so that water flows down towards your home from above, causing flooding.

Inadequate Drainage

If there are cracks or other openings in your basement walls, water will flow into these holes instead of draining away properly, leaving behind dampness on the walls.

Poor Drainage System

This applies mostly to newer homes but can also happen with older ones if they do not have proper drainage systems installed when they were built or if they fail due to age or wear and tear over time.

Reviews

Cassandra Abdus-Salaam

Alpharetta, GA

Hi. I don’t know where to start. John and Tidal wave his company were and still are a blessing from my Lord. One morning in January of this year I went down stairs and stepped in a puddle of water it was flooded. I also passed out. This was the second one in less than a year. I stood there for a minute and just cried. All I could think of was my insurance company may not take care of it a second time even if it was for a different leak. The last claim they paid out $23,000 for…

John Ayer

Atlanta, GA

John Mayer, Principal of Tidal Wave Response, and his project management team, lead by Colin Galubinski, has completed the restoration of my home in record time. The work included, but was not limited to the following: 1) Professional water leak detection 2) Professional plumbing that removed the concrete slab and backfill material, found and repaired the PEX cold water pipe 3) Backfilled and placed concrete to finish grade 4) Packed the furniture to storage. Restored the furniture without incident nor damage. 5) Dehumidified and removed the damaged carpet and hardwoods. 6) Cleaned the concrete surface and installed the new hardwoods.…

Spenser Hewett

Brookhaven, GA

I have worked in sales and also have experience in launching my own business. It is rare that you find a company that genuinely has your best interest in mind. Not only was John helpful outside of his business’ expertise, but he sent Chris to do a *free* evaluation of our water damage. John and Chris were both genuine and personable. They cared about what our situation was and they weren’t looking to get any sort of “fee” for their time. These are the kind of people you trust to handle big, catastrophic water damage to. I have previously had…

James B

Chamblee, GA

While others might categorize John as a fast talker, but on the other hand. I saw a man that's passionate about his business and willing to help others elevate their present situation. In early December 2022, our laundry room floor and wall got water damaged due to leakage from the hotline pipe, and other rooms got impacted due to water spreading. So, I reached out to John and he assured me they'll do everything within their power to get our house done before Christmas day. Boy was he right! John and the tidalwave response team were professional, helpful and got…

Anne Berman

Cumming, GA

We did not plan to renovate our terrace level but when the hot water heater leaked and flooded the entire area, Tidal Wave was recommended to us by the plumber who installed the new hot water heater. John, the owner was at our house the same evening and mitigation started early the next morning. The crew professionally removed wet drywall, flooring, and baseboard. Fans and dehumidifiers ran for several days and then the fun began. With Colin's help we were able to choose updated flooring, repaint a color of our choice, and new trim was installed. Everything was completed professionally.…

Hunter smith

Decatur, GA

Wow incredible company! I had a water damage that destroyed my entire main level. John and his team are very quick and efficient. When I was looking on google, tidal wave response was the only water restoration company with a 5 star review. Highly recommended using tidal wave response!!

Meme Dupree

Doraville, GA

I had a flood in my downstairs living room. It was devastating. John with Tidal wave was very professional. He had his team show up immediately to get the job done. Great work Tidal Wave. I'm definitely going to refer you to others.

pam kunc

Duluth, GA

Thank Goodness !!! Johnny on the spot! We had a pipe ruptured in the ceiling and we were looking for a 5 Star Rated Water Restoration company . Johnny came out with a Thermal Camera and found the pipe spraying behind the wall. I wish I would have called him sooner . My wood floors were so damaged by the water, they all will need to be replaced. We highly recommended Johnny with Tidal Wave. Very knowledgeable and even helped us start a claim with our insurance ..

Randy Fann

Dunwoody, GA

Had a shaky start with this particular project but I must say the owner took charge and corrected all the remaining issues. I will say that this particular job was the absolute worst I have taken on in 45 yrs. My hat is off to Mike and his crew and Allan was superb in making sure everything was done correctly. Thank you for your follow-up on this project guys. And Allan thank you especially for your thoroughness in making sure it was completed correctly.

Kadeja Edwards

Johns Creek, GA

Unfortunately, my water heater was old, cracked, and leaking water onto the supported area in my garage. I needed to replace the water heater with a new one, but the plumber told me that in order to meet the city code, I would have to handle the water damage first. I called out tidal wave (who I’ve worked with before), and they came out the very next day to cut out the affected area and treat for mold. This is my second issue with water in my house and tidal wave has taken care of both issues. They are fast,…

How to Waterproof Basement Walls

Waterproofing your basement walls is essential in preventing flood damage to your home. A waterproof basement will help keep your home safe from water damage and structural damage caused by water seeping into the basement walls.

A waterproof basement wall is a great investment for your home, as it can save you thousands of dollars in repairs and prevent costly mold growth.

Remove Standing Water

The first thing you need to do is remove standing water from the basement floor. This may seem simple at first glance, but it can be quite challenging if there is a lot of water in your basement. You may need to hire a professional contractor to help with this task because they have the equipment needed to remove large amounts of water quickly and efficiently. Once all the standing water has been removed from your concrete floor, it’s time to start preparing for waterproofing!

Remove Efflorescence

Efflorescence is mineral deposits that form on concrete surfaces when they come in contact with moisture from groundwater or rainwater. It looks like white powder on your concrete walls and can be removed with muriatic acid or other cleaning products. Removing efflorescence will improve your sealant's adhesion and make applying waterproofing products to your concrete walls easier.

Clean the Basement

The first step in waterproofing your basement is to clean it. You don't need to scrub down every corner, but you want to remove any dirt, grime, or mold hiding in the cracks and crevices of your basement walls.

Clean the walls with mild detergent and water. If you have stubborn stains on your wall, try using a commercial degreaser before moving on to step two.

Reasons to Choose Tidal Wave

We Bill Your Insurance Directly

We Bill Your Insurance Directly

We Accept All Insurance Claims

We Accept All Insurance Claims

Licensed & Certified Technicians

Licensed & Certified Technicians

30 Minutes Response Time

30 Minutes Response Time

Locally & Family Owned

Locally & Family Owned

24/7 Emergency Service

24/7 Emergency Service

Never an Overtime Charge

Never an Overtime Charge

Remove Old Paint

If there's old paint on your basement walls, it needs to come off before you can apply the new waterproofing coating. The best way to do this is with a heat gun or an orbital sander. Heat guns are better for removing thicker coats of paint, while orbital sanders are better for finer coats of paint that may have been applied more recently.

Plug All Holes

After cleaning up the walls and removing all old paint, it's time to plug all holes and cracks in the concrete with cement sealer or caulking compound. This will help prevent moisture from seeping through small openings in your basement walls later down the road when there's already water inside them!

Reseal All Openings

Reseal all the openings in the wall. These include cracks, gaps, and holes around pipes, electrical outlets, and light fixtures. Also, include vents that might let water in or out of your basement.

Apply Waterproof Coating

Once you've sealed all the openings, apply a waterproof coating on the walls' exterior surface. This coating should be thick enough to prevent water from seeping through but thin enough to allow moisture vapor to escape through evaporation. An asphalt-based coating is a good option that comes in several colors and textures depending on what look you want for your basement walls.

Tidal Wave Response

The key is to prevent water from entering your basement in the first place, as this is by far the easiest and most affordable approach. This can be accomplished with rock-solid waterproof basement walls that prevent the water from penetrating your basement. If you already have water damage, the first thing you need is Tidal Wave Response for water damage removal, then restore and prevent any future events.

Our Services

From emergency water extraction to full property recovery, Tidal Wave Response provides the fast, expert care you need. Browse our complete suite of 24/7 restoration services below to see how we can help today.

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