The challenge
The long-span pitched roof of the marl storage hall had been exposed to wind, thermal movement and dust for years. Fasteners were backing out, laps were separating and corrosion was starting under dust deposits in the valleys.
Loose sheets in strong wind are a serious hazard to trucks and people below. The size of the roof and continuous haulage traffic ruled out scaffolding and boom lifts.
Scope of works
- Dual-rope access and horizontal lifelines across ridges, eaves and valleys
- Visual and hands-on inspection of profiled sheeting, laps and flashings
- Audit of fasteners and sealing washers along every purlin line
- Check of accessible purlins and brackets for deflection and corrosion
- Immediate securing of loose flashings and replacement of failed fixings
Outcome
Every loose panel was secured, removing the risk of sheets blowing off, and the plant received a defect register for targeted repairs, with no disruption to haulage. The same method was applied to the homogenizing silo cladding. See our rope access services.
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