In homes built on concrete foundations, water and sewer lines run beneath the slab. When one of those pipes leaks, it can cause serious structural damage before you even realize something’s wrong.
That’s why spotting a slab leak early is so important. Knowing the warning signs can help you avoid expensive repairs and protect your home’s foundation.
A slab leak happens when a water line under your home’s concrete foundation cracks or bursts. Over time, that leak lets water pool under the slab, eroding soil and weakening the structure. These leaks can happen to both hot and cold water lines, although hot water leaks are more common because heat speeds up wear and tear on piping.
Common causes include:
Because the leak is hidden under concrete, it’s not always obvious. But your home gives you clues.
If your water bill suddenly spikes and you can’t find a reason, water could be escaping underground. Slab leaks can waste hundreds of gallons a month without you seeing a single drop.
Do you notice certain areas of your floor feel warm underfoot? That’s often a giveaway of a hot water line leaking beneath the slab. Tile and hardwood floors make this easier to feel.
When water seeps upward, it can wet your carpet, bubble up your laminate, or warp your hardwood flooring. You might even see dark stains or mildew near the baseboards.
If you can hear water running when every faucet and appliance is turned off, something’s wrong. Slab leaks can produce a faint hissing or rushing noise that you can hear near the floor.
A hidden leak reduces the pressure in your plumbing system. If your faucets or shower suddenly lose strength, and you’ve ruled out other causes, it could be a slab leak.
Don’t try to tackle this one on your own. Slab leaks need specialized tools and expertise. A licensed plumber can perform a slab leak detection test with thermal imaging to locate the exact source.
A slab leak is a threat to your home’s foundation and flooring. Catching it early is important. If you notice any of these warning signs, call the professionals at Elk Grove Village Sewer & Plumbing right away.
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