Basement Waterproofing: 11 Tips Every Homeowner Should Know

Whether you use your basement for storage, living, or anything else, keeping your belongings safe is a consideration for any homeowner. Basements are unfortunately prone to flooding and moisture problems since they’re constantly exposed to groundwater. Seeping water in basements is more than just annoying; it’s a hazard that promotes mold growth and potential damage to the structure of your house and your belongings. Proactively preventing water damage through effective basement waterproofing goes a long way to saving on costs and frustration later down the line.

Here are 11 of the most important tips and tools for any homeowner interested in basement waterproofing.

1. Inspecting the basement

The first step when it comes to basement waterproofing is understanding where your problem is coming from. This is especially true if you’re considering a potential basement renovation. Usually, it’s the pressure of rainwater that causes water infiltration. So you might have to run different tests outside your house to understand if the humidity is caused by poor drainage. Then, inspect your basement carefully for signs of seeping water. Common spots include pipelines, water intakes, and around windows. Most important, look for cracks along the bottom of the walls. They are one of the most common signs of basement humidity. Some tips here are going to help you control the humidity, but the problem must be solved at the source for a long term solution.

2. Installing a Dehumidifier to Fight Condensation

One common issue that many homeowners experience is basement humidity. This problem is caused by underground condensation that creates excessive moisture in your home. Dehumidifiers are a great option for controlling humidity in your basement. You can get a hygrometer from any regular hardware store to check humidity levels beforehand. If a dehumidifier seems to be a necessary investment, don’t forget to read up on how to maintain it properly down the line. Manufacturers provide their own instructions for doing so.

3. Seal Cracked Areas

You may see cracks on your foundation. Some cracks are considered normal, like small hairlines cracks, but others have to be taken care of to prevent water infiltration, excessive moisture, or even radon gas. A quarter-inch wide crack is wide enough to raise concern. To determine which method to use to repair the cracks, you have to understand what causes them. There are two types of cracks: static and moving. Static cracks are the result of the foundation settling or moving slightly through the years. Moving cracks are often caused by the soil surrounding the house and not so much the foundation itself. It’s normal for an older home to have some static cracks but they should still be addressed to prevent mold, leakage, or any other problem. Significant cracks or horizontal ones must be evaluated by a professional to determine the scope of repair work.

In general, minor cracks can be repaired by injecting epoxy and sealant by the homeowner himself. These waterproof coatings, which often come with warranties, are effective against leaks, condensation, and potential flooding.

4. Using Waterproof Paint for General Coverage

While sealants work well to prevent leaking, a layer of waterproof paint can act as a vapor barrier. Specifically, you want to use waterproof paint for cement or cinder block walls. Like its name entails, this kind of paint contains product that provides a water tight coating and prevents water infiltration. It works best when applied to a fresh, clean wall that doesn’t already have some sort of coating on it. However, it’s important to note that this solution shouldn’t be the only solution you opt for if you do face major water infiltration issues.

5. Reinforcing Soil Grading to Channel Away Water

Grading refers to the slope of the ground outside your foundation. A slope that falls away from your home allows water to flow away from your basement and help avoid water infiltration problems. Newly-constructed houses have strong sloping, but this structure can wear away with time and regular construction or landscaping by the homeowner. It’s worth adding extra dirt to reinforce your grading, though extensive repairs will occasionally be required.

6. Double Down on Drainage

If your neighborhood includes homes that are close to each other, soil grading may not be a viable option.

A more expensive but effective solution is a foundation drain system built into the yard. Many homeowners are using plastic drain tubing to redirect water underground. However, the French drain, also called weeping tile, system must be installed by experts in order to correctly solve the water accumulation problem. Even the location of landscaping elements like shrubs and trees can impact water drainage.