Three roofs re-ducted.
One head office, still working.

Hutwood Court is Utilita’s headquarters, so the building had to keep working while its life-expired air handling units came off the roofs. 365 Building Services led the project as principal contractor: the AHU replacement itself, design coordination and the crane lift planning, to a design by Hulley & Kirkwood Consulting Engineers. What 365 needed was a ventilation specialist for the ductwork: the existing runs could not simply be reconnected to the new units. They had to be stripped out, replaced with new ductwork matched to the replacement AHUs, and lagged, all sequenced around the lift programme and the other works on the Central, East and West roofs. Redundant lagged pipework to the old frost coils also needed removing across all three roof areas once the old units were isolated.

We started with a site survey led by our Head of Ventilation and our ductwork installer, checking every system, attenuator and connection point against the consultant’s design, then agreed a clear scope split with 365 so every party knew exactly where their work started and stopped. Our RAMS and works programme were built around 365’s two planned crane lifts: Central and East roofs stripped concurrently and cleared in the first lift, new ductwork installed, connected and lagged behind it, then the West roof following the same sequence around the second lift. Working to 365’s phasing kept disruption to the occupied building to a minimum and meant the plant was never all offline at once.