What to do in case of water infiltration in the basement?

If you are worried about your property due to water infiltration in the basement, these tips will be very useful. This will let you know exactly what to do and who to contact. This will allow you to take the appropriate steps to protect your home and your investment. In doing so, the situation will become clearer and the solutions more obvious.

What to do if you notice water infiltration in the basement?

Any amount of water in the basement should be a source of immediate concern. It only takes 24 to 48 hours for the water buildup to turn into mold. Check for warning signs of water infiltration.

Some signs may reveal, among other things, water infiltration due to the settlement of the foundations. The first step is to inspect your property and pay close attention to the following clues:

  • Cracks in the foundations

  • High humidity

  • Marks on concrete

  • White powder

  • Marks at the bottom of the basement walls

  • Water on the walls

  • Mould

If you see one or more warning signs, it is recommended to call on a foundation expert. This expert will confirm your concerns or reassure you about cracks or potential water infiltration. It is best not to wait before consulting, because in case of water infiltration, the problems may worsen over time.

Here are some situations that can cause water infiltration into your home:

Landscaping and gutters important to avoid water infiltration in the basement

If the soil around the foundation is saturated, excess water will seep into the basement through cracks in the walls and floor, or through infiltration through untreated walls.

Make sure the floor is leveled away from the basement wall at a rate of about half an inch of slope per foot. Check that the gutters are free of debris so that the rain does not overflow and flow along the wall of the house. Downspouts should direct runoff from the roof and drain it well away from the foundation. If the downspout does not do its job, water accumulates along the foundation wall and eventually seeps into the basement.

Prevent climbing vines from growing along the foundation walls and place foundation plantings (shrubs, etc.) far enough away from the walls so that air can circulate in the house and in the cellar. Keep the bottom gravel surface of skylights free of debris.

If your basement is damp, it’s wise to hire a professional for an on-site inspection. Failure to fix the problem can damage the structure and resale value of your home.


If the basement has windows, it is extremely important to check the caulking around them. A small opening can accumulate enough water to create mold behind the gypsum wall. You may not notice it, but the air now has a higher number of mold than the norm.

Brick walls

If your home has brick walls, it is essential that there is an opening at regular intervals in the drain holes on the lower level of the masonry. As the brick is porous, it retains a high level of moisture (water). The drain holes allow water to escape through the back of the masonry. The water is guided by a membrane under the lower rows of masonry. If the membrane is broken or the holes are blocked, the water (in search of its own leveling) will flow on the basement plate (at the top of the foundations and in the basement walls, behind the gypsum stone walls). This water will then continue to flow under a raised floor. These areas do not dry out and since the water becomes moldy after 24-48 hours, this area would probably not pass an air test.


If a deck is attached to the house, it is recommended to install a flashing board behind the separation board to ensure that water does not seep over the basement plate, otherwise it enters the basement. This results in a higher than normal number of molds in the basement.

Find peace of mind!

In case of water infiltration in your home, rest assured, there are solutions to prevent and counter water infiltration. Minor solutions can help repair cracks when they are quickly corrected by professionals. There is no one better than a foundation expert to help you solve this kind of situation. Contact an expert as soon as possible before the situation escalates and you are struggling with mold problems! This specialist will be able to remedy your problem by finding the right solution and give you back your peace of mind.

In case of water infiltration in the basement please contact us, in order to proceed with the cleaning and decontamination of mold possible