Commercial case study
Perkins Engines Plant Roof Refurbishment
A 3,000 m² roof refurbishment at the Perkins Engines plant in Peterborough, waterproofed with a Centaur polyurethane liquid system, including around 2,000 m² of intricate detailing worked in beneath live plant and machinery.
- Sector
- Commercial
- Location
- Peterborough
- System
- Centaur polyurethane liquid system
- Year
- 2026
- Size
- 3,000 m²
The transformation
Before & after
The challenge
The Perkins Engines plant in Peterborough needed a large 3,000 m² roof area refurbished, but the real challenge was the detailing. Around 2,000 m² of it sat beneath plant, pipework and machinery, with very little clearance to work in. In places the team had to use mechanics’ trolleys to slide underneath the plant and apply the system by hand, which made this some of the most demanding detail work there is.
Our solution
We used a Centaur polyurethane liquid system, which suited the job perfectly. Applied wet, it cures into a seamless, fully bonded membrane that moulds around the most awkward shapes, so it could be worked into every tight detail beneath the plant where a sheet membrane simply could not go. The larger open areas were coated to the same specification, tying the whole roof into one continuous, watertight skin.
The outcome
A fully watertight 3,000 m² roof across a working industrial plant, with even the most inaccessible areas beneath the machinery sealed properly rather than patched. A genuinely difficult job delivered to a high standard.
Project gallery
A closer look





Have a similar project?
Tell us about your roof and we’ll survey it and give you a clear, honest written quote, no pressure.