How To Waterproof Basement Walls

If you’ve ever had a leaky basement, you know how frustrating it can be. You might not even realize that there are ways to waterproof a basement wall to prevent water from getting in. Luckily, there are two different ways to waterproof your basement walls: by sealing them from the outside or sealing them from the inside. The right way will depend on what exactly is causing your problem, but don’t worry! We’ll walk you through both options so that you can find one that works best for your situation.

There are short-term and long-term fixes for a leaky basement.

There are short-term fixes and long-term fixes for a leaky basement. The former include using over the counter crack fillers, which are best suited to cosmetic wall repair. Long-term fixes can involve commercial grade crack repair and sump pumps, both of which should be installed by basement waterproofing professionals.

If you value your property, you want to make a long-term investment in waterproofing your basement walls. Consider hiring an experienced WiseCracks™ contractor who knows how to fix cracks, install watertight sheets, and sump pumps properly.

The Right Way to Waterproof Your Basement Walls

The right way to waterproof your basement walls is with a whole-home system. This will ensure that the moisture isn’t coming from just one area, but from all over the house. When you have a whole-house system installed, it’s much easier to detect where the source of your water is coming from and make repairs as needed.

One common reason for basement flooding is foundation cracks. Foundation cracks can cause water to leak into your basement, which causes mold and mildew growth on your basement walls and ceilings. This can lead to larger problems like structural damage if left unattended!

Another way that moisture gets into basements is through an external wall waterproof barrier. The barrier protects interior walls from moisture penetration by keeping any water that has entered through cracks or holes on the outer surface away from internal wall surfaces where it could cause structural damage or mold growth on painted surfaces below ground level (for example: suspended concrete block walls).

Exterior Foundation Waterproofing

  • You can apply a waterproofing membrane to your exterior basement walls, either by using a waterproofing paint before you apply the membrane.
  • Waterproofing paint. If you don’t want to use a waterproofing membrane, you can simply coat your basement walls in this liquid coating that will make them as watertight as possible on a budget.
  • Caulk and sealant. In addition to painting your basement walls or applying a waterproofing membrane over them, you may want to caulk and seal any holes in them for extra protection against water infiltration

Seal Your Basement Walls From the Inside

Once you’ve gotten your basement walls waterproofed, you need to make sure they stay that way. Otherwise, you could be back to square one in no time! You can seal your basement walls from the inside using a variety of products—this will help ensure they stay dry and sound for years to come.

After using a commercial sealing product on your basement walls from the inside, make sure that you keep them clean by sweeping or vacuuming regularly. Moisture may still seep through even after sealing your basement walls from the inside. However, cleaning them regularly will help prevent any mold growth on your painted surfaces that could cause damage over time.

Clean Out the Gutters

Gutter cleaning! This step is obvious, but it’s easy to forget. Remove leaves and debris from your gutters regularly so they don’t block the water flow or clog up your downspouts. A leaf blower makes this job much easier, but you can also use a hose with a nozzle, if you have one.

If you do have a leaf blower (or even just an old broom), use it while doing other steps in this article to help clear away more debris from around the foundation of your house!


Tackling your leaky basement walls is one of the most important things you can do to protect your home value and structural integrity. Whether it’s a temporary fix or a long-term solution, you can save yourself tons of money and headache by tackling the problem right now. Contact one of our basement waterproofing specialists today for a free quote.

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