Tips and Tricks

How to Find a Water Leak Inside a Wall

So, you think you have a leak in the wall, but you aren’t sure where. You know it’s causing damage, but where do you start? 

One of the most common causes of water damage in the home is faulty plumbing. However, most homeowners assume that they will be able to see it from a faucet or under a sink. 

Unfortunately, there are times when plumbing will get ruined inside walls and there won’t be any immediate signs of trouble.

Call Hedlund: (800) 433-5863

What causes water leaks inside a wall?

There are a number of things that can cause this:

  • Weak or old plumbing that can’t withstand the weight of the flooring or walls pressing down on it. 
  • Pipes that freeze and burst.
  • External forces causing punctures (renovations or even hanging a picture).
  • Hard water can corrode metallic pipes over time and create a leak.
How to Find a Water Leak Inside a Wall
Possible area to find water leak inside a wall.

Signs You Have a Leak in Your Wall 

Wet spots on the wall

This is the most obvious tell-tale sign of a water leak. Oh, if they could all be this easy. However, the source of the leak may not be right near where the wet spot is. Water does like to travel. 

Mold formation

The second most common sign that there is a water leak inside your wall is mold growth in the corners of the walls. Moisture will promote mold growth, so if you see mold, you probably have a leak. 

How to Find a Water Leak Inside a Wall
Mold formation on wall.

Peeling Paint

If the leak is on a painted wall and has been left for a while, the paint may start to bubble and peel. Most interior paint in latex, which will react this way.

How to Find a Water Leak Inside a Wall
Peeling paint from water damage

Your Water Bill is Higher

One of the quickest and easiest ways to tell if there’s a leak in your house is by checking water bills. If you notice an increase, but no visible leaks anywhere around the home you might have a leak in your wall. 

How Leaks Are Detected in a Wall

The best thing to do is contact a professional plumber. We have all the right tools that will cause the least amount of damage. You don’t want to just start taking a sledgehammer to your walls. 

  • Moisture Meter. We will use a moisture meter to scan the wall and figure out where the most water is accumulating. Generally, the highest concentration of the water will be closest to the location of the leak.
  • Infra-red Camera. We might also use an infra-red camera to locate the cold and leaking spot. The point where the leaking is coming from will be colder than the surrounding area by a few degrees. 
  • Cutting into the wall.  This is typically the last resort unless the homeowner beat us to it. We try everything we can to defect a leak  without necessarily having to tear open any part of the home structure. However, sometimes we have to carefully open up the walls, locate the leak and repair it.
Looking for plumbing repair or service?
Call (800) HEDLUND > (800) 433-5863

About Hedlund Plumbing

The solution to all your plumbing repair, installation, and maintenance needs. Our local Lansing plumbers are fully licensed and insured professionals. We arrive on time in a marked van ready to go with the tools and materials to complete the job. Our commitment to our customers is why we are considered by many to be the top Lansing plumber.

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