Maintenance Delivery Unit, Cardiff Canton
Client: MPH Construction (Principal Contractor), for Network Rail
Project Overview
Maintenance Delivery Unit, Cardiff Canton
Service: Roofing
Sector: Rail
- Approved Contractor: MLG UK Ltd
- System Installed: Polyroof liquid waterproofing system
- Client: MPH Construction (Principal Contractor), for Network Rail
- Duration: 6 weeks
- Work Carried Out: Roof survey and design, liquid waterproofing, manufacturer-guaranteed installation
Scope of Work
The Maintenance Delivery Unit at Cardiff Canton is where Network Rail’s maintenance teams are based. MLG designed and installed its new roof, a Polyroof liquid system carrying a 25-year guarantee, appointed by MPH Construction as principal contractor.
- Design and installation both carried out by MLG, not installation to someone else’s specification
- New Polyroof liquid waterproofing system throughout
- 25-year guarantee issued on completion
- Delivered for Network Rail through MPH Construction as principal contractor
Systems installed
- Waterproofing: Liquid waterproofing system, designed and installed by MLG (Polyroof): 25 yr guarantee
Challenges & Constraints
A depot in use
The Maintenance Delivery Unit is where Network Rail’s maintenance teams are based, with their vehicles, their plant and their stores. It is not a building the railway can afford to have out of action.
What a leak costs
A roof that leaks over a depot puts equipment and records at risk.
What a closure costs
A roof replacement that shuts the depot puts maintenance response at risk.
Project Execution & Techniques
Design and installation together
MLG carried the design as well as the installation, rather than installing to someone else’s specification.
Surveyed, then designed
The roof was surveyed and the system designed for it, closing the gap between what was specified and what can actually be built on the roof as found.
Polyroof liquid system
A new Polyroof liquid waterproofing system was installed throughout.
Backed by the manufacturer
The specification was agreed with the manufacturer, and a 25-year guarantee issued on completion.
Outcome & Long-Term Benefits
A 25-year guarantee
The completed roof carries a manufacturer-backed 25-year guarantee.
One point of responsibility
Because MLG both designed and installed the system, the specification and the workmanship sit with a single contractor.
Depot under cover
The Maintenance Delivery Unit has a new waterproofing system over the vehicles, plant and stores the maintenance teams work from.
Conclusion
A maintenance delivery unit is where the people who look after the railway are based, so its roof carries two risks at once: leaking over plant and records, or shutting the depot to be replaced. MLG designed and installed a new Polyroof liquid system over Cardiff Canton, appointed by MPH Construction as principal contractor for Network Rail.
Taking the design as well as the installation matters on a depot roof. A specification written by the installer, agreed with the manufacturer and backed by a 25-year guarantee leaves the client with one point of responsibility for both the design and the workmanship.
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