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Water Leak Inside a Wall? Here’s How You Can Find It

A water leak inside your wall hardly sets off alarms. You can’t see or hear it. Left undetected, it may seriously damage your walls and even ceilings and floors. A slow hidden water leak inside your walls creates a moist environment that rots wood and breeds mold.

You can identify leaks in your walls by checking for common signs of water damage, such as peeling wallpaper or paint, or areas of discoloration. A moldy smell indoors may also signify a water leak in Regina.

Wet Spots on Your Wall

If you start seeing wet patches on your walls, it could be a sign of a water leak somewhere in your plumbing network. Concrete and stone are poor at absorbing water, so it doesn’t take long after a leak for water to start seeping through your wall, creating the look of a sweaty wall.

Peeling Paint

When the paint on your wall starts peeling, it might be a telltale sign that there’s a leak somewhere in the plumbing system. Most homeowners use water-based paints, which don’t handle water that well. This means once moisture comes into regular contact with the wall, the paint begins to depreciate.

You might also notice that wooden structures like fittings or other boards start rotting after coming into contact with water.

Mold Formation

When some corners of your home and particularly the walls begin developing mold, this is one of the most common signs of a water leak in your wall. Moisture is the number one culprit for mold formation, so if your walls are developing mold, a water leak is making that happen.

 Musty Smell

If a leak inside your wall isn’t noticeable, you can be able to identify the leak with your sense of smell. As water leaks inside walls don’t get the chance to dry out, your walls start to give off a moist, musty smell.

A musty-smelling wall will often have other signs of water leakage, including discoloration. But this isn’t always the case—sometimes an odor is the only indicator of a water leak deep inside a wall.

A thick drywall can absorb water almost as efficiently as a sponge, which prevents any visible signs of the water leak from appearing.

Unexplained Hike in Your Water Bill

Noticed a significant spike in your month-to-month water bills? If so, it may be because there’s a water leak inside your walls.

For instance, the EPA recommends that a household of 4 consume no more than 45,000 liters of water during cold months. If you’re using significantly more water and don’t know why, it might be due to a leak. Sure, this won’t help you pinpoint the leak’s location, but it can at least signify whether you’ve got a leak in your wall or not.


When handling leaks inside your walls, it’s vital to watch out for the aforementioned warning signs. Once you’ve got enough reason to believe there might be hidden water damage happening in your home, be sure to call in a plumbing expert for a quick evaluation and repair.

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