How to Spot Hidden Water Leaks Before They Cause Major Damage
Water leaks can be sneaky — often silent, invisible, and incredibly destructive. What starts as a tiny hidden drip inside your walls or under your slab can turn into thousands of dollars in damage if ignored.
At Clays Plumbing, we’ve seen it all: flooded foundations, mould-infested walls, and skyrocketing water bills — all caused by leaks that homeowners didn’t know were there.
That’s why knowing how to spot the signs early is essential. Here’s how to protect your home with proactive leak detection and repairs.

1. Unexpectedly High Water Bills
One of the first red flags of a hidden water leak is a sudden spike in your water bill without any change in your usage.
- Bill steadily increasing month after month
- Usage climbing even when you’re away from home
- No visible leaks but higher costs
If this happens, it’s time to call Clays Plumbing for leak detection in the Central Coast. We can quickly track down the source before it becomes a major issue.
2. Damp or Musty Smells Indoors
A hidden leak often creates persistent dampness, even when everything looks dry on the surface.
- Musty, mouldy odours near bathrooms or laundries
- Earthy smell in cupboards or pantries
- Unexplained humidity or condensation inside
These smells usually mean water is soaking into walls or floors. Our leak detection and repairs team can use specialised equipment to locate the exact source without damaging your home.
3. Discoloured or Warped Walls and Floors
Water leaks can silently damage your home’s structure from the inside out.
- Bubbling or peeling paint
- Stained plasterboard or ceilings
- Warped timber floors or soft spots
If you see these warning signs, you may have a slab leak or concealed pipe leak. Clays Plumbing can investigate quickly to stop further structural damage.
4. Continuous Sound of Running Water
Hearing water running when no taps are on? That’s a classic hidden water leak sign.
- Water meter spinning when everything is off
- Trickling, hissing, or dripping sounds behind walls
- Toilets refilling randomly on their own
Our team uses acoustic listening devices and thermal imaging to detect leaks without tearing up your home.
5. Wet Patches Around the Home or Garden
Outdoor leaks can be just as destructive — especially if they’re under concrete or soil.
- Soggy garden patches or sunken soil
- Puddles forming near the home’s slab
- Moss or mould growing on exterior walls
These can point to a slab leak, which can damage your foundation if left untreated. Clays Plumbing’s leak detection and repairs service can locate and fix it fast.
Why Early Leak Detection and Repairs Save You Thousands
Catching a leak early can:
Prevent mould growth and structural damage
Stop high water bills from draining your budget
Protect your home’s foundation and electrical systems
Avoid major insurance claim hassles
Clays Plumbing has the advanced tools and local experience to find and fix hidden leaks fast, safely, and with minimal disruption.
Call Clays Plumbing for Leak Detection and Repairs in the Central Coast
If you suspect a leak — even a small one — don’t wait for major damage. Clays Plumbing provides:
Advanced leak detection technology
Fast and reliable hidden water leak repairs
Expertise in slab leaks and underground pipes
Fully licensed and insured local plumbers
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