
Roof exterior
Restricted roof-valley drainage
Further review recommended
Observation
The roof valley had restricted clearance and localised debris accumulation. Deterioration and corrosion were visible to the adjacent metal roofing.
Why it matters
Restricted drainage may allow water to back up beneath the roof sheets, while ongoing corrosion may lead to perforation and moisture entry.
Recommendation
Have a suitably qualified roofing contractor clear and assess the valley, confirm the detailing provides adequate drainage, and repair or replace deteriorated components as required.





