Cheltenham House

The Kingspan OPTIM-R Balcony & Terrace System was installed as part of this roof terrace retrofit, helping to minimise heat loss while maintaining the existing floor level.

The Project

The 84 m² terrace sits directly above the house's 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. 

Cheltenham, Gloucestershire
Kingspan OPTIM-R Balcony & Terrace System and Thermaroof TR27 LPC/FM
BPN Architects
JM Weston Construction

JM Weston Construction carried out the refurbishment work on the property.

The firm laid a vapour control layer above the plywood deck, followed by he 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. 

It was essential that the new build-up could meet the design U-value of 0.17 W/m²·K, 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.

Robert Smith - Associate, BPN Architects

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