Leak Detection & Repairs
Hidden leaks? High water bills? Damp walls or unexplained water loss? We’ve got you covered. We’re the trusted local leak detection specialists homeowners and businesses rely on for fast, accurate, leak detection and repairs, covering Johannesburg, Sandton, Randburg, & Alberton.
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Why Leak Detection Maters
Leak detection matters because a small leak you can’t see is still costing you money and damaging your property every single day. Left unnoticed, it can rot walls, crack foundations, and spike your water bill, turning a quick, cheap fix into a costly repair job. Catching it early keeps the damage small and the bill low
- A small leak still costs you money every single day through a silently rising water bill
- Hidden moisture rots walls, warps floors and cracks
- Left unnoticed, a quick cheap fix turns into a costly, disruptive repair job
- Catching it early keeps the damage small, the bill low, and your home protected
What our Customers Say
Plumbing Services We Offer in Sandton
Leak Detection & Repairs
Geyser & Water Heater Leaks
Toilet Leaks
Fixture & Tap Leaks
Roof, Ceiling & Wall Leaks
Pool & Irrigation Leaks
Our Process
Contact Us
Call us or send a message to book a plumber at a time that suits you.
Inspection
Our expert plumber arrives promptly to assess and take a look at the problem
Quotation
You receive a clear, upfront quotation that outlines all costs for parts and labour before any work begins.
Repair
We fix the issue backed by a guarantee. Pay only what was quoted. Done.
Not sure if you have a leak? Here are the signs to watch for, and what each one usually means:
- An unusually high water bill with no change in habits
- Damp patches on a wall or floor that shouldn’t be there
- Water pressure that keeps dropping
- A water meter that keeps moving with everything off
How we find hidden leaks without digging up your entire property:
Where hidden leaks usually happen in Johannesburg homes:
- Pipework hidden beneath a concrete slab
- Geyser connections and fittings
- Toilet cisterns and irrigation lines
- Roof, gutter and pool pipework joints
What happens once we've found your leak:
Trusted Leak Detection Specialists in Johannesburg
When you’re dealing with a hidden water leak in Johannesburg, you need fast, professional help before minor seepage turns into a costly repair. At HeroPlumbers, we specialise in comprehensive leak detection services using advanced acoustic listening devices, thermal imaging cameras and tracer-gas equipment to pinpoint leaks without unnecessary damage to your walls, ceilings or floors. Whether you’re experiencing a leaking tap, a concealed pipe leak, a ceiling leak after a storm, or a sudden spike in your water bill, our experienced team has the expertise and equipment to diagnose and resolve the issue quickly. With over 30 years serving Johannesburg, Sandton, Randburg, & Alberton, we know the local plumbing systems, soil conditions and common pipe materials inside out — and we’re ready to help today.
Our Plumbing Services in Johannesburg
Hidden Underground Pipe Leaks
Many Johannesburg homeowners notice damp patches in the garden, an unexplained jump in their water bill, or the sound of running water when no taps are on. These are classic signs of an underground pipe leak often caused by ageing copper or galvanised lines, ground movement in clay rich Johannesburg soil, or pressure surges from the municipal supply. Left untreated, underground leaks waste thousands of litres, undermine driveways and foundations, and lead to expensive structural damage.
We use professional acoustic leak correlators and ground microphones to pinpoint the exact location of the leak — often within centimetres — before any digging begins. This means no unnecessary excavation of your paving or lawn. Once located, our team can repair or replace the affected section using copper, PPR, PVC or UPVC pipe as required, then pressure-test the line to confirm a watertight repair. Most underground leak detections are completed in 1–2 hours with same-day repair available.
Ceiling, Roof & Wall Leaks
A stained ceiling, peeling paint, bubbling plaster or a slow drip after rain are all warning signs of a leak inside your roof or walls. In Johannesburg, these issues are commonly caused by cracked roof tiles, perished waterproofing, blocked gutters, or concealed pipe leaks running through the ceiling void. The longer moisture sits, the higher the risk of mould, electrical hazards and rotting timber trusses.
Our technicians use thermal imaging cameras and moisture meters to trace the true source of the leak — which is rarely directly above the visible stain. We distinguish between roof leaks, plumbing leaks and rising damp, then provide a clear repair plan with upfront pricing. Repairs are carried out cleanly with minimal disruption to your ceilings, and we always confirm the fix before we leave.
Geyser, Toilet & Bathroom Leaks
A constantly running toilet, a slow drip from a geyser overflow pipe, or water pooling around a bathtub or shower can quietly waste up to 400 litres a day. Geyser leaks in particular are common in older Johannesburg properties where elements, thermostats or drip trays have failed. These leaks often go unnoticed until they damage cupboards, ceilings below, or trigger a high water bill.
We service all major geyser brands and components — element, thermostat, safety valve, pressure-control valve and drip tray — and can replace washers, seals and flush mechanisms in toilets and taps the same day. For bathroom leaks behind tiles or under baths, we use moisture detection and endoscope cameras to find the issue without ripping out tiling unnecessarily.
Burst Pipes & Emergency Leaks
A burst pipe is one of the most stressful plumbing emergencies — water can flood a room in minutes, damage flooring, ruin furniture and short-circuit electrics. Bursts are often triggered by pressure spikes, corroded copper joints, or cold snaps that affect exposed pipework in roof spaces and outbuildings.
Our emergency response team is on call across Johannesburg, Sandton, Randburg, Alberton and surrounding suburbs with same-day service available. We isolate the supply, locate the burst, and repair or replace the failed section using durable PPR, copper or stainless-steel pipe. Every emergency repair is pressure-tested and backed by our 100% satisfaction guarantee.
Our Leak Detection Process in Johannesburg
Comprehensive Inspection & Diagnosis
Every job starts with a thorough on-site assessment. We listen to the property, review your water-meter readings, check pressure at multiple points, and inspect visible pipework, geysers, toilets and taps. This systematic approach means we catch not just the leak you called us about, but any secondary issues developing in the background — saving you from repeat call-outs.
- Full water-meter test to confirm the leak rate
- Pressure testing on hot, cold and incoming municipal supply lines
- Visual inspection of geyser, toilets, taps and visible pipework
- Written diagnostic report with photos before any work begins
Advanced Leak Detection Techniques & Equipment
We've invested in the latest non-invasive leak detection technology so we can find leaks accurately the first time, without breaking walls or digging up gardens unnecessarily. Our fleet carries acoustic leak correlators, ground microphones, thermal imaging cameras, tracer-gas equipment and endoscope cameras for inspecting cavities and ceiling voids. This combination lets us locate leaks in concealed copper, PPR, PVC, UPVC and stainless-steel pipework — even when buried under concrete slabs or hidden behind tiled walls — typically within centimetres of the actual fault.
- Acoustic correlators for underground & slab leaks
- Thermal imaging for hot-water and ceiling leaks
- Tracer-gas detection for the most concealed leaks
- Borescope cameras for cavity and ceiling-void inspection
By combining these tools with our technicians’ years of hands-on experience, we resolve even the most challenging drain issues efficiently — minimising disruption to your home or business.
Repair & Restoration Process
Once the leak is pinpointed, we walk you through your repair options with upfront, flat-rate pricing — from a simple washer or joint replacement up to a full pipe re-route. Our plumbers carry copper, PPR, PVC and stainless-steel fittings on the truck, so most repairs are completed the same day. After the repair, we pressure-test the line, restore water supply, and tidy the work area before we leave.
- Same-day repair on most leaks
- Pressure-tested and guaranteed
- Minimal disruption to walls, ceilings and paving
- Insurance-friendly written reports available
Preventive Maintenance & Long-Term Solutions
Stopping leaks before they start is always cheaper than fixing the damage afterwards. We offer scheduled plumbing health-checks for homes and businesses across Johannesburg, including geyser servicing, pressure regulation, and inspection of high-risk joints in older copper or galvanised systems. Our maintenance plans are especially valuable for older properties in New Redruth and Brackenhurst where pipe corrosion is a common long-term issue.
- Annual plumbing inspections
- Geyser servicing and element checks
- Pressure-control valve installation
- Replacement of high-risk legacy pipework
Leak Detection vs Leak Repair: Which Do You Need?
Leak detection is the diagnostic step locating exactly where water is escaping using non-invasive equipment. Leak repair is the physical fix that follows. Many Johannesburg homeowners only need detection if they're working with insurance, a body corporate, or selling their home. Others need detection plus a same-day repair. We're happy to do either, and we'll never push you into work you don't need. After the assessment we'll give you a clear, written recommendation so you can decide what's right for your property and budget.
- Detection-only reports for insurance claims & sectional title schemes
- Combined detection + repair packages
- Honest, no-pressure recommendations
- Free quotes within minutes
- Unusually high water bill: A sudden jump in your bill with no change in usage is often the first sign of a hidden leak somewhere in the system.
- Damp patches on walls or floors: Moisture appearing where there shouldn’t be any usually means water is escaping from a pipe behind the surface.
- Musty or damp smell indoors: A persistent damp smell, especially in one room, often points to slow leaking inside a wall or under flooring.
- Sound of running water: Hearing water moving through pipes when every tap is off is a strong sign of an active leak.
- Low or dropping water pressure: A leak upstream reduces the pressure reaching your taps and shower.
- Cracked or lifting flooring: Water pooling under tiles or laminate over time causes them to crack, lift or warp.
- Constantly running water meter: If your meter keeps moving with every tap and appliance off, water is escaping somewhere in the system.
Frequently Asked Questions
Most residential leak detections in Johannesburg are completed within 1–2 hours from arrival. A simple visible-pipe or tap leak can often be located and quoted in 30 minutes, while an underground or slab leak that requires acoustic correlation and tracer-gas detection typically takes 1.5–2 hours. If a same-day repair is required, we add the repair time on top — most repairs are completed within a further 1–3 hours. Because we use flat-rate pricing, you’re never charged more if the job takes longer than expected.
Common signs of a hidden leak in Johannesburg homes include an unexplained spike in your municipal water bill, the sound of running water when no taps are open, damp patches on walls, ceilings or in the garden, low water pressure, peeling paint or bubbling plaster, and a constantly spinning water meter. A simple test: turn off all taps and appliances, then watch your water meter for 15 minutes. If it’s still moving, you almost certainly have a leak — call us immediately to limit the damage.
Yes. We offer same-day service throughout Johannesburg, Sandton, Randburg, & Alberton. For genuine emergencies burst pipes, flooding, or major water damage — we prioritise the call-out and aim to be on-site as quickly as possible. We don’t charge after-hours surcharges or weekend premiums for our service area.
Absolutely. A slow drip from a tap can waste over 7,000 litres a year, and a continuously running toilet can lose more than 400 litres a day. Beyond the wasted water and inflated bills, ongoing leaks cause cabinet rot, tile lift, mould growth and damage to flooring and ceilings below. Most tap and toilet leaks are inexpensive to fix usually a worn washer, seal or flush mechanism so it pays to call us as soon as you notice the problem.
Geyser leaks usually come from one of four sources: a failed safety/pressure-control valve (PCV) discharging through the overflow pipe, a perished element seal, a corroded inner tank, or a leaking drip tray. A small drip from the overflow can be normal as the geyser heats, but a constant flow indicates a faulty PCV or thermostat that needs immediate attention. A leaking inner tank means the geyser must be replaced. We service all major geyser brands and can usually diagnose the issue on the same call-out.
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