Suffering from a damp basement?

More than that, not treating a damp basement (correctly) can lead to a lot of negative consequences. Discover the various causes of a damp basement, and learn how to definitively make and keep your basement dry.

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There can be numerous factors at the root of a damp basement. With a thorough moisture analysis, the exact culprit will be found, allowing the ideal solution to be indicated. Could you use such an analysis? Our experts will help you for free and without obligation.

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Why do basements suffer from moisture problems more often?

A basement typically struggles much more quickly or more frequently with moisture problems than any other room within your home. This is mainly due to the basement's underground location; because of this, various sources of moisture easily find their way into the basement:

  • Groundwater levels used to be fairly constant, but due to climate change, the soil now experiences more frequent extreme drought or excessive moisture. This leads to variations in pressure on your basement, which can cause cracking (AquaConsult in News Sheet).
  • In addition, we are increasingly experiencing tremendously high water levels these days. For example, the year 2023 was one of the wettest years ever recorded, and ongoing climate change in 2024 is expected to continue this trend. As a result, groundwater levels in Flanders are increasingly reaching higher elevations. This situation can result in basements completely surrounded by groundwater, while the soil between the surface and the groundwater line becomes saturated, allowing moisture to find its way into the basement.
  • New construction or changes in the environment, such as building a long driveway or paving a neighbor's front yard, can alter the flow of water and lead to additional water around the basement.
  • In addition, moisture has difficulty leaving the basement because of a lack of ventilation. The end result is then a damp basement, which then leads to moisture problems and their ill effects.

Houses built before 1990, with brick walls, most often suffer from a damp to wet basement. We would like to emphasize that damp basements are not limited to older homes. Basements in recently built homes can also suffer. Poor ventilation can result in basement moisture even in the most modern homes.

The effects of a damp basement

Basement moisture is always an annoying problem that is best addressed as soon as possible. After all, a damp basement does not come without consequences:

  • For example, a damp basement can cause the weakening of your home's materials and construction, compromising the stability of your home.
  • All the stuff in your basement will be damaged.
  • You may also face additional moisture problems, including rising damp. or mold growth.
  • In addition, a damp basement is pernicious to your health. Mold and high humidity cause a lot of health problems, especially for people who already have underlying respiratory or lung problems.

So to avoid these negative consequences, it is appropriate to waterproof your damp basement. A benefit: you can expand the space where you can live in your home. Something that also increases the value of your home.


Want to address basement moisture? Then first and foremost you need to know the cause.

The various causes of a damp basement

A damp basement can be caused by many factors. Each cause has its own method of control, making it very important to get a correct diagnosis.


In general, we can distinguish two categories of causes: moisture problems caused by infiltration and moisture problems that did not involve infiltration.

1. Causes by infiltration

Are you also suffering from water in your basement? If so, chances are you are dealing with infiltrating moisture. With infiltration, there are three major and common diagnoses to make.

1a Permeable moisture

Penetrating damp Is a moisture problem located above ground. The problem there is with the outer walls of the house. These are no longer able to keep the moisture out at that time. For example, a wall can suffer badly if it rains a lot for a while. Most of the moisture is then in the outer walls, but sometimes it can be so severe that the moisture penetrates into the inner walls.


Permeable moisture can be especially dangerous in the winter. In temperatures below zero, the penetrating moisture freezes in the walls of the house, which can cause cracks in those walls.

1b Groundwater

Because a basement is located underground, this space is literally surrounded by moisture, namely groundwater. The ground contains a lot of moisture, especially if you live in an area where it rains a lot. Due to a poor foundation or cracks in the walls, groundwater can easily enter the basement. Specifically, the basement floor and/or perimeter wall will allow moisture to pass through due to the pressure of groundwater. Sometimes it's so bad that your basement is literally flooded, or that the moisture gets through the walls to creeping.

1c Bagged or seeping water

The name kind of says it all: water sinking down into the walls. When a large amount of precipitation has fallen, the water looks for a way down. When the ground is oversaturated, the water looks for another way. Sometimes that's the walls of your home and, more specifically, your basement.

2. Causes without infiltration

Moisture problems can also occur without infiltration. There is one common example of this.

2a Leaking pipes

A leak in the water pipes or drains is a common cause that leads to moisture in your basement. With a leak, water penetrates the basement through the walls. Virtually every basement is surrounded by pipes and sewer pipes. As a result, even small leaks, if left undetected, can cause significant moisture damage over time.

2b Condensation

In case of condensation warm air settles on a cold surface, where it condenses. To combat condensation moisture, it is important to adequately ventilate your rooms. This is often not possible in basements, causing excessive humidity. This then causes all kinds of problems, including for your health.

It is not always easy to pinpoint the exact cause of a damp basement. Sometimes, even multiple factors can contribute to the occurrence of a wet basement. Therefore, we recommend seeking professional advice from a moisture expert. That way, you will be assured of the most appropriate solution to the problem.

Request your free moisture analysis here

Moisture control in the basement

Getting your basement dry (or having it dry) is a good idea and can be done in several ways. Usually it is best to follow the following steps:

As mentioned above, every moisture problem needs its own solutions. Therefore, it is important to always have an expert look at the moisture in the basement. This expert can determine with certainty the cause of the damp basement, and this person will also inform you about the appropriate solution for your situation.

After determining the cause, you can get started on the best-fit control method. We list the solutions most commonly deployed.

1. Basement drainage

At a basement drainage a moisture expert is going to install a kind of bubble membrane. This membrane causes the water in the basement to be collected through a variety of small channels to one drain. The water is then pumped away by means of an automatic water pump. To finish everything off nicely, the moisture specialist applies a layer of concrete above the membrane. Because the groundwater is neatly drained under this new layer, basement drainage is an invisible but durable solution.

2. Basement sealing

In case of basement waterproofing or caulking, the basement walls and floor are partially stripped off and re-treated with waterproof cement layers, using different materials and in different stages. These layers ensure that your basement becomes completely waterproof. Again, it is possible to choose ceramic tiles as a finish.

3. Injecting walls

When you have your walls injected, holes are made in the walls just above ground level. A moisture-resistant gel is then injected into them. As the gel cures, a barrier to rising groundwater forms.

4. Fixing leaks

This solution speaks for itself, and is somewhat less invasive than the previous moisture solutions. When basement moisture is caused by leaks, it is wise to address them immediately. For burst pipes, it is recommended to consult a specialist, as a lot can go wrong if you attempt to do it yourself.

5. Basement ventilation

Finally, it is very important to make sure your basement is well ventilated. Ventilation is a very durable and adequate solution to specific moisture problems, especially when dealing with issues such as condensation moisture.

UNIQUE AT AEROCONSULT! At AeroConsult, we offer a unique alternative to basement drainage. Instead of pouring a new layer of concrete over the bubble wrap, certified ceramic tiles can be installed. As a result, you couple the practical with the pleasant, because your basement will be tiled immediately.

Keeping your basement for good dry: ventilation

Suppose you suffered from moisture in your basement in the past, you had a moisture expert determine and apply the appropriate solution, but the problem has returned. In many cases, this is not because a mistake happened, but a lack of ventilation causes the moisture to return. So, if you want to be permanently rid of a damp basement, it is imperative that you provide adequate ventilation. Natural ventilation is almost impossible in a basement, so we install mechanical ventilation . Before you know it, the moisture problem is solved.

Suffering from moisture in the basement?

Then contact Aquaconsult and our specialists will come by for a free moisture expertise, everywhere in Flanders.

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