Roof penetrations
Junctions around vents, pipes, skylights and other openings where detailing has failed.
Find the entry point and repair the weatherproofing properly.
Targeted roofing repairs and purpose-made flashings for leaks, damaged junctions and vulnerable penetrations.
Roof and flashing repairs
The stain inside may be a long way from the entry point.
Water can track along underlay, framing and ceiling battens before it becomes visible. We use the leak pattern, weather conditions and exterior details to guide assessment, then coordinate the suitable roofing or flashing specialist where required.
GNM can also repair the affected ceiling, insulation, wall linings and finishes after the source is resolved.
Common problem areas
Aprons and transitions
Roof-to-wall, change-of-pitch and cladding junctions needing targeted repair or new flashing.
Localised roof damage
Loose, corroded or damaged components allowing wind-driven rain into the building.
The repair can include
- Leak-pattern review
- Safe-access planning
- Roof and junction inspection
- Temporary make-safe where appropriate
- Custom-flashing measure and manufacture
- Appropriate specialist coordination
- Ceiling and insulation reinstatement
- Repair photographs and records
Can you guarantee a leak from one visit?
Some faults are immediately clear; intermittent and wind-driven leaks can require staged investigation or observation during specific weather. We explain the evidence, the proposed repair and any remaining uncertainty before proceeding.