The City Fitness warehouse in Lower Hutt required a recovery solution due to ongoing roof performance issues. The original roof was a DD400 metal profile, which in the past was often installed at pitches below the currently accepted minimum of 3 degrees. Roofs laid at these shallow pitches are prone to damage: even light foot traffic can create dishing in the pans, stressing the sheet joints between purlins and leading to widespread leaks.
Further problems arose from aging roof penetrations, deteriorated tray flashings, and internal gutters. Seagull nests regularly washed into the gutters, blocking outlets and forcing water back under the roof edge into the gym.
A full roof replacement would have caused major disruption to the business, so a lightweight recover solution was chosen. The Ultratherm Xtreme FiberTite Recover system allowed the gym to stay operational throughout the works. The recovery process included removing the skylights, overlaying the existing roof, gutters, and parapets with DD400 lightweight fillets, installing a vapour control layer, mechanically fixing lightweight board, and applying the FiberTite membrane.
System Details
Ultratherm Xtreme recover with FiberTite
- RL Vapour Control Layer
- RL PIR Insulation fillets(40 mm)
- RL RoofBoard LW
- FiberTite Membrane
