The Problem
The window was leaking heavily, with water appearing in more than one place. We needed to identify the cause rather than treat only the visible signs of the leak.
Case Study
Aluminium Window Repair
Aluminium Window Leak Caused by Blocked Drainage
An aluminium window was leaking heavily, with water appearing inside and outside the window system.
Our inspection found silicone blocking the drainage holes. Water entering the drainage area could not escape through its intended route.
We removed the blockage, cleared the drainage channel and replaced the glazing bead gasket. A water test then confirmed that water could flow out through the correct route again.
Aluminium window repair case study
The drainage problem and repair
Repair summary
An aluminium window was leaking heavily, with water appearing inside and outside the window system.
Our inspection found silicone blocking the drainage holes. Water entering the drainage area could not escape through its intended route.
We removed the blockage, cleared the drainage channel and replaced the glazing bead gasket. A water test then confirmed that water could flow out through the correct route again.
Case summary
From silicone blockage to working drainage
What We Found
The drainage holes had been blocked with silicone. This prevented water from leaving through the window's drainage channel.
Clearing the Drainage
We removed the silicone obstruction and cleared the drainage channel to reopen the intended water exit path.
Replacing the Gasket
The repair also included replacing the glazing bead gasket. This work was carried out alongside clearing the blocked drainage system.
The Water Test
After the work, we tested the drainage with water. The test confirmed that water was flowing out through the correct route again.
The Result
The drainage path was working again during the water test. The existing window was repaired by addressing the silicone blockage and replacing the glazing bead gasket, rather than replacing the whole window.
What this case shows
Why the drainage path mattered
- Find the cause, not just the visible leakIn this case, silicone obstructing the drainage holes was preventing water from leaving the window system.
- Check the drainage and gasket togetherThe completed work addressed both the blocked drainage channel and the glazing bead gasket.
- Check the result with waterThe water test demonstrated restored drainage through the correct exit path at the time of the repair.
Related services
Where to go next
Repair-first advice
Leaking aluminium window?
Windows Repair Galway can inspect the drainage route and glazing bead gasket, then advise on a suitable repair or replacement where needed.