The Kingspan OPTIM-R Balcony & Terrace System and Kingspan Thermaroof TR27 LPC/FM have been installed as part of a roof terrace retrofit on a house near Cheltenham, helping to minimise heat loss whilst maintaining the existing floor level.
The 84 m2 terrace sits directly above the main reception room and had begun to leak in several places. As part of the retrofit, the terrace was stripped back to the existing plywood deck and BPN Architects used the opportunity to raise the thermal performance of the roof above the Building Regulation requirements.
Robert Smith, Associate at BPN Architects, commented:
“It was essential that the new build-up could meet the design U-value of 0.17 W/m2K, while working to the existing door thresholds. Kingspan’s technical team carried out a site visit and provided the specification and layout for the Kingspan OPTIM-R and Thermaroof products to allow us to achieve this.”
With an aged thermal conductivity of 0.007 W/m∙K, Kingspan OPTIM-R panels can provide an ultra-thin solution for hard to insulate areas. The Vacuum Insulation Panels feature a microporous core which is evacuated, encased and sealed in a thin, gas-tight envelope. The Kingspan OPTIM-R Balcony & Terrace System also incorporates Kingspan OPTIM-R Flex infill panels, which can be cut to fit around penetrations and used to fill any small gaps in the insulation layer
J.M. Weston Construction carried out the refurbishment work on the property. The firm laid a vapour control layer above the plywood deck, followed with the 40 mm thick Kingspan OPTIM-R Balcony & Terrace System and a 25 mm Kingspan Thermaroof TR27 LPC/FM overlay. A waterproof membrane was then installed above the insulation and the terrace paving was fitted on support pedestals.
Kingspan OPTIM-R panels hold LABC Registered System approval, and can help to minimise the Building Control checkings and approvals process when installed to Kingspan’s recommendations, saving both time and money.