Client Location – Lisburn, Co. Antrim
The Problem
A homeowner in Lisburn contacted B Keenan Heating and Plumbing after noticing discolouration to the tiles at the bottom of their shower enclosure. One tile in particular had changed colour compared to the surrounding tiles. While there was no obvious pooling of water, this visual change raised concerns about a possible hidden shower leak.
Changes in tile colour, especially at low level, are a common early warning sign that water is escaping behind tiles and penetrating the substrate. This type of issue typically requires professional leak detection to prevent further damage.
Leak Detection Assessment
Our initial visit focused on targeted shower leak detection. We inspected the shower tray, tile grout, silicone seals, and plumbing connections. Although the shower appeared intact on the surface, the discoloured tile strongly suggested moisture ingress behind the tiled area.
Using our leak detection expertise, we confirmed that water was escaping behind the tiles during normal shower use and tracking downwards, causing the colour change at the base of the enclosure.
The Cause of the Leak
The investigation revealed that the existing seal between the shower tray and the tiled wall had failed. This allowed water to seep behind the tiles over time. As moisture built up behind the wall, it began to affect the tile adhesive and backing, resulting in visible discolouration—an early but critical sign of a leaking shower.
The Solution
Once the leak was accurately identified through shower leak detection, we removed the failed sealant, thoroughly dried the affected area, and applied a new professional-grade waterproof seal. All surrounding joints were checked and reinforced where necessary.
Final leak detection tests were carried out to ensure the shower was fully watertight before the system was returned to normal use.
The Outcome
Successful shower leak detection without unnecessary disruption
- Leak fully sealed and water ingress stopped
- Tile discolouration issue addressed at an early stage
- Further structural damage prevented
The client was reassured that the issue had been resolved before it could lead to more extensive and costly repairs.
Key Takeaway: Tile Discolouration Is a Warning Sign
A tile that changes colour—especially at the bottom of a shower—is often a clear indicator of a hidden leak. Early leak detection can prevent damage to walls, floors, and substructures.
If you notice discoloured tiles, damp smells, or suspect a shower leak, B Keenan Heating and Plumbing offers professional leak detection and repair services across Lisburn and the surrounding areas.
Contact us today for expert shower leak detection and plumbing repairs.
