Client Location – Cultra, County Down

The Problem

A homeowner in Cultra contacted B Keenan Heating and Plumbing after discovering persistent damp in a bedroom and on adjoining internal walls. Despite attempts to dry the affected areas, the damp continued to return, leaving the homeowner concerned about potential structural damage and mould growth.

With no obvious plumbing leaks or roof defects visible, the client requested professional leak detection to identify the hidden source of the problem.

Leak Detection Investigation

We carried out a comprehensive leak detection survey, inspecting the property’s plumbing system, drainage, and visible pipework. As no obvious faults were found internally, our investigation expanded to concealed drainage and overflow pipework.

During our inspection, we discovered that the property had previously been extended. When the extension was built, the overflow pipe from the toilet cistern had not been extended through the new external wall as it should have been.

Instead, when the toilet overflow activated, water discharged directly into the cavity wall rather than safely outside the property.

The Cause: Toilet Overflow Discharging into the Cavity Wall

Our investigation confirmed that every time the toilet overflowed, water was running into the cavity wall. Over time, this water tracked down through the wall construction, eventually soaking the insulation, internal walls and the adjoining bedroom.

Because the water was hidden within the cavity, the source remained unnoticed for a considerable period, making professional leak detection essential in identifying the true cause.

This is an excellent example of how historic building alterations can unintentionally create hidden plumbing defects that only become apparent years later.

The Solution

Once the problem had been identified, we corrected the overflow arrangement by extending the pipework correctly to discharge safely outside the property.

After completing the repair, we carried out further inspections to ensure the overflow system operated correctly and that no additional hidden leaks were present. With the source eliminated, the property could begin the drying-out process before any cosmetic repairs were undertaken.

The Outcome

• Hidden source of damp accurately identified
• Incorrect toilet overflow installation rectified
• Water no longer entering the cavity wall
• Further structural damage prevented
• Homeowner able to begin drying and reinstatement works

The client was relieved to finally discover the true cause of a damp problem that had been affecting the property for some time.

Key Takeaway: Damp Isn’t Always Caused by a Leaking Pipe

Not every damp problem is caused by a burst pipe or roof leak. Incorrect plumbing installations, especially following extensions or renovations, can remain hidden for years before causing serious damage.

Professional leak detection doesn’t just locate leaking pipes—it identifies the true source of unwanted water, even when it’s concealed within walls, floors or building cavities.

At B Keenan Heating and Plumbing, we specialise in diagnosing complex and hidden water ingress issues throughout Cultra, Belfast and County Down, helping homeowners avoid unnecessary repairs and expensive guesswork.

If you’ve noticed unexplained damp, mould, or water staining in your home, contact B Keenan Heating and Plumbing today for expert leak detection and a lasting solution.

Client Location – Ladas Drive, Belfast

The Problem

A homeowner on Ladas Drive in Belfast contacted B Keenan Heating and Plumbing after noticing signs of water loss within their plumbing system. Although there were no obvious leaks visible in the property, concerns were growing that a hidden leak was developing beneath the floor.

With no clear indication of where the water was escaping, the client requested professional leak detection to identify the source before further damage occurred.

Leak Detection Investigation

We carried out a comprehensive leak detection survey, checking visible pipework, fixtures, and system performance. As no faults were found above ground, our attention turned to the pipework concealed beneath the kitchen floor.

Using specialist leak detection equipment and a methodical approach, we traced the source of the water loss to a specific area within the kitchen.

The Cause: Pinhole Leak in Copper Pipework

Once the affected area was accessed, we discovered a small pinhole leak in the copper pipework beneath the kitchen floor.

Although pinhole leaks are often tiny, they can allow a surprising amount of water to escape over time. Because the leak was hidden below the floor, it had gone unnoticed until symptoms began to appear elsewhere in the property.

Without professional leak detection, these types of leaks can continue for months, leading to damp, structural damage, and increased water bills.

The Solution

After accurately locating the leak, we carefully accessed the pipework beneath the kitchen floor and repaired the damaged section of pipe. The repair was completed with minimal disruption to the property.

Following the repair, we carried out final leak detection and pressure testing to ensure the pipework was fully sealed and operating correctly.

The Outcome

• Hidden pinhole leak successfully located
• Damaged pipe repaired efficiently
• Water loss eliminated
• Kitchen floor protected from further damage
• Plumbing system fully restored

The client was pleased that the leak was identified quickly and repaired before it could cause more extensive damage.

Key Takeaway: Small Leaks Can Cause Big Problems

Pinhole leaks may seem minor, but when hidden beneath floors they can cause significant damage over time. Early leak detection is the best way to locate these issues before they become costly repairs.

B Keenan Heating and Plumbing provides professional leak detection services across Belfast and throughout Northern Ireland.

If you’ve noticed unexplained water loss, damp patches, or suspect a hidden leak, contact us today for expert leak detection and repair.

Belfast, Northern Ireland

The Problem

A homeowner in Belfast contacted B Keenan Heating and Plumbing after noticing signs of water loss and damp around their property. The issue had become increasingly concerning, with water pressure problems suggesting a possible hidden mains leak.

Given the symptoms, the client requested professional leak detection to identify the source of the problem quickly and prevent further damage.

Leak Detection Investigation

We carried out a detailed leak detection assessment, starting with checks on the property’s internal plumbing system and mains supply. The signs pointed towards a hidden underground issue, so we focused on tracing the incoming water main.

Using specialist leak detection equipment and a structured investigation process, we pinpointed the source of the leak to an old lead mains pipe.

The Cause: Burst Lead Mains Pipe

Our investigation confirmed that the lead mains pipe had burst, allowing water to escape underground. Older lead pipework can weaken and deteriorate over time, making it increasingly vulnerable to cracks and bursts.

Because the leak was hidden below ground, it was not immediately visible but was causing ongoing water loss and pressure issues throughout the property.

The Solution

Once the burst section was located through leak detection, we carefully accessed the damaged area and carried out the necessary repair to restore the mains water supply.

The damaged lead pipework was repaired securely, and the system was fully tested afterwards to confirm there were no further leaks or pressure issues.

The Outcome

• Burst lead mains pipe successfully located
• Leak repaired efficiently
• Water pressure fully restored
• Further underground water damage prevented

The client was relieved to have the hidden mains leak resolved quickly and professionally.

Key Takeaway: Hidden Mains Leaks Can Cause Major Water Loss

Older lead mains pipes are a common source of hidden leaks and bursts in older properties. Professional leak detection is essential to accurately locate these faults and minimise disruption during repairs.

B Keenan Heating and Plumbing provides expert leak detection and mains pipe repair services across Belfast and surrounding areas.

If you suspect a hidden mains leak or are experiencing water pressure issues, contact us today for fast and reliable leak detection.

Client Location – Dundonald, County Down

The Problem

A homeowner in Dundonald contacted B Keenan Heating and Plumbing after experiencing ongoing pressure loss within their heating system. The system required frequent topping up, but there were no visible leaks around the boiler or radiators.

The client also reported signs of a rodent problem within the property, raising concerns that hidden pipework may have been affected. Professional leak detection was required to locate the source of the issue before further damage occurred.

Leak Detection Investigation

We carried out a full heating system leak detection assessment, checking all accessible components of the system before focusing on concealed pipework beneath the floors.

Using targeted leak detection methods and pressure monitoring, we traced the issue to a hidden section of heating pipework where water was escaping.

The Cause: Heating Pipe Damaged by Rodent Activity

Our investigation revealed that rodents had been nibbling at the heating pipework, eventually damaging the pipe enough to cause a leak. Because the leak was hidden beneath the floor, it had gone unnoticed until the heating system began losing pressure.

Rodent activity can cause unexpected plumbing issues, particularly where pipework runs through concealed voids or under floors.

The Solution

Once the leak was identified through leak detection, we isolated the system and repaired the damaged section of heating pipework. All nearby pipework was inspected for additional signs of damage to ensure there were no further weak points.

We then carried out full pressure testing and final leak detection checks to confirm the heating system was fully sealed and operating correctly.

The Outcome

• Hidden heating leak successfully detected
• Damaged pipe repaired and secured
• Heating system pressure fully restored
• Additional pipework inspected for further damage
• Future water damage prevented

The client was relieved to have the issue located and repaired quickly, restoring full heating system performance.

Key Takeaway: Rodent Activity Can Cause Hidden Plumbing Leaks

Rodent damage to pipework is more common than many homeowners realise and can lead to hidden leaks beneath floors or behind walls. Professional leak detection ensures these problems are identified and repaired before they escalate.

B Keenan Heating and Plumbing provides expert leak detection services across Dundonald and surrounding areas.

If your heating system is losing pressure or you suspect hidden leaks, contact us today for fast and reliable leak detection.

Client Location – Dundonald, County Down

The Problem

A homeowner in Dundonald contacted B Keenan Heating and Plumbing after noticing damp appearing on walls at ground floor level within the property. The damp patches were gradually worsening, but there were no obvious visible plumbing leaks nearby.

Concerned about possible hidden water damage, the client requested professional leak detection to identify the source of the issue before it caused more extensive problems.

Leak Detection Investigation

We carried out a detailed leak detection assessment, inspecting all visible plumbing fixtures, pipework, and drainage systems within the affected area. As the damp appeared below the bathroom area, attention turned to concealed bathroom waste pipework and fittings.

Using a structured and methodical leak detection process, we traced the source of the problem to the bath waste system.

The Cause: Faulty Bath Waste

Our investigation confirmed that the bath waste fitting had developed a fault, allowing water to escape during normal use of the bath. Because the leak was slow and hidden beneath the floor, water had been tracking down into the ground floor walls, causing the visible damp patches.

Faulty bath wastes are a common cause of hidden leaks and can often remain unnoticed until damp appears elsewhere in the property.

The Solution

Once the leak was identified through leak detection, we removed and replaced the faulty bath waste fitting, ensuring all connections were fully sealed and secure.

We then carried out final leak detection and flow tests to confirm that the leak had been fully resolved and that no further water was escaping.

The Outcome

• Hidden leak successfully traced to faulty bath waste
• Damp issue on ground floor walls identified at source
• Faulty fitting replaced and fully sealed
• Further water damage prevented

The client was relieved to have the damp issue properly diagnosed and repaired before more serious structural damage developed.

Key Takeaway: Damp Walls Often Indicate Hidden Plumbing Leaks

Damp on walls—especially below bathrooms—can often be caused by concealed leaks from bath wastes or drainage systems. Professional leak detection ensures the true source is located quickly and repaired correctly.

B Keenan Heating and Plumbing provides expert leak detection services across Dundonald and surrounding areas.

If you’ve noticed damp walls or suspect a hidden leak, contact us today for fast and reliable leak detection.

Client Location – Cranley, Bangor, County Down

The Problem

A homeowner in Bangor contacted B Keenan Heating and Plumbing after noticing signs of damp and an unpleasant smell within their property. The issue was intermittent at first but gradually became more noticeable, raising concerns about a potential hidden leak.

With no obvious source visible, the client requested professional leak detection to identify the problem before it caused further damage.

Leak Detection Investigation

We carried out a detailed leak detection assessment, starting with all visible pipework and drainage systems within the property. Given the nature of the smell and damp, we focused on waste and soil pipe systems, which are common sources of hidden leaks.

Using a structured and methodical leak detection approach, we traced the issue to the soil stack within the property.

The Cause: Leaking Soil Stack

Our investigation revealed that the soil stack had developed a leak, allowing wastewater to escape. This was the source of both the damp conditions and the unpleasant odour experienced by the client.

Because soil stack leaks are not always under pressure, they can go unnoticed for some time, making professional leak detection essential for accurate diagnosis.

The Solution

Once the leak was identified, we carried out the necessary repairs to the soil stack, ensuring all connections were properly sealed and secure. The repair was completed efficiently to minimise disruption to the property.

Following the repair, we conducted final leak detection checks to confirm the issue had been fully resolved and that no further leaks were present.

The Outcome

• Leak successfully detected in soil stack
• Damaged section repaired and sealed
• Damp and odour issues resolved
• Property restored to a clean, safe condition

The client was relieved to have the issue clearly diagnosed and resolved quickly.

Key Takeaway: Soil Stack Leaks Can Cause Hidden Damp and Odours

Leaks in soil stacks are a common but often overlooked cause of damp and unpleasant smells in a property. Professional leak detection ensures these issues are accurately located and fixed before they worsen.

B Keenan Heating and Plumbing provides expert leak detection services across Bangor and surrounding areas.

If you’ve noticed damp or unexplained smells in your home, contact us today for fast and reliable leak detection.

Client Location – Lisburn, County Antrim

The Problem

A property owner in Lisburn contacted B Keenan Heating and Plumbing after noticing ongoing water loss within their system. Although there were no visible leaks inside the property, the issue persisted—indicating a hidden fault somewhere within the pipework.

Given the symptoms, the client requested professional leak detection to locate the problem before it caused structural damage.

Leak Detection Investigation

We carried out a full leak detection assessment, starting with all visible pipework, fittings, and system components. As no issues were identified above ground, attention turned to pipework beneath the floor—particularly areas where pipes were embedded in concrete.

Using a structured and efficient leak detection approach, we monitored system behaviour and traced the issue to a specific section beneath the concrete floor. This allowed us to pinpoint the location accurately while keeping disruption to a minimum.

The Cause: Malfunctioned Plastic Fitting

Upon accessing the affected area, we discovered that a plastic fitting had malfunctioned beneath the concrete floor. The failure allowed water to escape slowly, which explained the ongoing loss without obvious visible signs.

We are seeing an increasing number of these plastic fitting failures, particularly in concealed areas such as under floors. Without proper leak detection, these issues can remain hidden and worsen over time.

The Solution

Once the leak was confirmed, we carefully accessed the pipework beneath the concrete floor. The faulty plastic fitting was removed and replaced with a secure and reliable connection.

Following the repair, we carried out full system testing and final leak detection checks to ensure the system was fully sealed and operating correctly.

The Outcome

• Hidden leak successfully detected beneath concrete floor
• Malfunctioned plastic fitting identified and replaced
• Plumbing system fully restored
• Potential long-term damage prevented

The client was relieved to have the issue resolved quickly, particularly given the hidden nature of the leak.

Key Takeaway: Plastic Fittings Can Fail Without Warning

Even modern plumbing systems can develop faults, especially with plastic fittings in concealed locations. Professional leak detection is essential to accurately locate and repair these issues before they escalate.

B Keenan Heating and Plumbing provides expert leak detection services across Lisburn and surrounding areas.

If you suspect a hidden leak or are experiencing unexplained water loss, contact us today for fast and reliable leak detection.

Client Location – Shaws Road, Belfast

The Problem

A homeowner on Shaws Road in Belfast contacted B Keenan Heating and Plumbing after noticing damp developing within their property. The issue was becoming more noticeable over time, but there were no obvious signs of a leak from visible pipework or fixtures.

Damp without a clear source is often a sign of a hidden plumbing issue, so the client requested professional leak detection to identify the cause before further damage occurred.

Leak Detection Investigation

We carried out a thorough leak detection inspection, starting with all visible plumbing in the affected areas. As no faults were found, we expanded our investigation to include concealed pipework beneath the floors.

Using a structured and efficient leak detection approach, we traced the issue to the bathroom area. This allowed us to pinpoint the source of the leak accurately without unnecessary disruption.

The Cause: Leak Beneath Bathroom Floor

Upon accessing the pipework beneath the bathroom floor, we identified a leaking section of pipe that had been allowing water to escape unnoticed. Because the leak was hidden below the floor, it had been gradually causing damp to spread within the property.

Leaks in bathroom pipework are a common cause of hidden damp issues and often require professional leak detection to locate precisely.

The Solution

Once the leak was confirmed, we isolated the system and repaired the damaged section of pipework. The repair was carried out carefully to minimise disruption to the bathroom.

Following the repair, we carried out full system testing along with final leak detection checks to ensure everything was fully sealed and operating correctly.

The Outcome

• Hidden leak successfully detected beneath bathroom floor
• Damaged pipe repaired efficiently
• Damp issue resolved
• Property protected from further water damage

The client was relieved to have the issue identified and resolved quickly, restoring their home to a dry and safe condition.

Key Takeaway: Damp Can Indicate Hidden Bathroom Leaks

Damp patches in your home are often caused by hidden leaks beneath floors or behind walls. Professional leak detection ensures the exact source is found and repaired before it leads to more serious damage.

B Keenan Heating and Plumbing provides expert leak detection services across Belfast and surrounding areas.

If you’ve noticed damp in your property, contact us today for fast and reliable leak detection.

Client Location – Belfast, Northern Ireland

The Problem

A homeowner in Belfast contacted B Keenan Heating and Plumbing after noticing damp inside a cupboard located beneath their stairs. The area had begun to feel moist, and there were visible signs of water damage, but the source of the issue was not immediately clear.

With no obvious leak visible, the client requested professional leak detection to identify the cause before the damage worsened.

Leak Detection Investigation

We carried out a detailed leak detection inspection, starting with all visible pipework in and around the affected area. As the cupboard backed onto the kitchen, we extended our investigation to include pipework beneath the kitchen units.

Using a structured and targeted leak detection approach, we traced the issue to a concealed area under the kitchen unit, allowing us to pinpoint the exact source without unnecessary disruption.

The Cause: Corroded Pipe Beneath Kitchen Unit

Our leak detection confirmed that a pipe beneath the kitchen unit had become corroded over time. This corrosion had weakened the pipe, eventually allowing water to escape slowly.

Because the leak was hidden beneath the unit, water had been tracking back towards the cupboard under the stairs, causing the damp conditions noticed by the client.

The Solution

Once identified, we carefully accessed the pipework beneath the kitchen unit. The corroded section of pipe was removed and replaced with a secure, long-lasting connection.

After completing the repair, we carried out final leak detection and pressure checks to ensure the system was fully sealed and that no further leaks were present.

The Outcome

• Hidden leak successfully detected beneath kitchen unit
• Corroded pipe identified and replaced
• Damp issue under stairs resolved
• Property protected from further water damage

The client was relieved to have the issue clearly diagnosed and resolved before more serious structural damage occurred.

Key Takeaway: Damp in Unusual Areas Can Indicate Hidden Leaks

Damp patches or moisture in areas like cupboards or under stairs can often be caused by hidden leaks elsewhere in the property. Professional leak detection ensures the true source is found and fixed efficiently.

B Keenan Heating and Plumbing provides expert leak detection services across Belfast and surrounding areas.

If you’ve noticed damp or suspect a hidden leak, contact us today for fast and reliable leak detection.

Client Location – Belfast, Northern Ireland

The Problem

A homeowner in Belfast contacted B Keenan Heating and Plumbing after noticing a persistent damp smell in their kitchen. While there were no obvious visible leaks or standing water, the odour was becoming increasingly noticeable and concerning.

Damp smells are often an early warning sign of hidden water issues, so the client requested professional leak detection to investigate the source before it developed into a larger problem.

Leak Detection Investigation

We carried out a detailed leak detection inspection of the kitchen area, starting with all visible pipework, appliances, and drainage points. With no immediate issues found, we focused on concealed pipework and waste connections where smells and minor leaks can often originate.

Using a structured and methodical leak detection approach, we traced the source of the damp smell to pipework located beneath the kitchen area.

The Cause: Damaged Waste Pipe

Our investigation revealed that a waste pipe had been chewed through—most likely by rats or mice. This damage allowed wastewater to escape slowly, causing damp conditions and the unpleasant smell within the kitchen.

Because the leak was from a waste pipe and not under pressure, it did not create obvious signs like dripping or pooling water, making it harder to identify without proper leak detection.

The Solution

Once the issue was identified, we removed the damaged section of waste pipe and replaced it with a secure, fully sealed connection. All surrounding pipework was checked to ensure there were no additional weak points or damage.

Final leak detection checks were carried out to confirm that the leak had been fully resolved and that no further water or odour issues remained.

The Outcome

• Hidden leak successfully detected in kitchen waste pipe
• Damaged section replaced and system sealed
• Damp smell completely eliminated
• Kitchen environment restored to normal

The client was relieved to have the issue resolved quickly, especially as the source of the smell had been unclear.

Key Takeaway: Damp Smells Can Indicate Hidden Leaks

A persistent damp smell—particularly in kitchens or bathrooms—can often be a sign of a hidden leak, even when no water is visible. Professional leak detection ensures these issues are found and fixed before they lead to further damage.

B Keenan Heating and Plumbing provides expert leak detection services across Belfast and surrounding areas.

If you’ve noticed damp smells or suspect a hidden leak, contact us today for fast and reliable leak detection.