Roof Leak Investigation London
Active roof leaks need finding and fixing at source. We investigate, identify the defect, and carry out practical repairs during the same visit where possible.
Why Roof Leaks Need Proper Investigation
Water that enters at roof level rarely appears directly below the entry point. It can travel along timbers, follow flashings, run down the inside face of walls, and appear metres away from the actual defect. This is why guessing the source without proper investigation often leads to wasted money on repairs in the wrong location.
When visible damp or active dripping appears inside, the problem is already established externally. The longer it is left, the more saturated the surrounding structure becomes. Saturated walls and timbers take considerable time to dry even after the leak is resolved.
Internal decorating alone does not solve roof leaks. The source must be identified and repaired externally before any internal work is worthwhile. Without addressing the cause, internal finishes will simply fail again.
We aim to find the source and carry out a practical repair during the same visit where possible. This reduces the number of mobilisations, keeps costs proportionate, and resolves the leak as quickly as possible. Rope access avoids unnecessary scaffolding where suitable for these investigations.
Common Roof Leak Sources
Failed Flashings
Lifted, cracked or missing flashings at abutments and penetrations are one of the most common sources of active leaks.
Slipped or Broken Tiles
Displaced tiles expose the underlay and allow water entry, particularly during wind-driven rain.
Blocked Valley Gutters
Debris accumulation in hidden valley gutters causes overflow that enters the roof space without any external sign.
Flat Roof Failures
Splits, blisters or upstand failures on flat roofs allow ponding water to enter the building below.
Parapet and Coping Defects
Open joints in copings and parapets allow water to enter from above and track down internal wall surfaces.
Gutter Overflow
Blocked or failed gutters discharge water onto the wall face which can track inward through failed pointing or openings.
How We Investigate and Repair Roof Leaks
Understand Symptoms
We gather information about where and when the leak appears internally. This guides our external investigation to the most likely source areas.
External Investigation
We access the roof and systematically inspect all potential source areas. Rope access where suitable allows close-range inspection without scaffolding delays.
Identify Source
We identify the specific defect causing water entry and photograph it clearly. Where multiple defects exist, we establish which is the primary cause of the active leak.
Same-Visit Repair
Where the repair is within scope, we carry it out during the same visit. This resolves the leak quickly and reduces costs by avoiding a second mobilisation.
Frequently Asked Questions
Active Roof Leak? Let Us Find and Fix It.
The longer a leak is left, the more damage it causes. Get in touch to arrange investigation and repair.