When an arts centre’s extension precluded the use of upstands as part of a roof terrace installation, a slim, high-performance insulation solution was required to prevent instances of cold bridging and ensure the application met the regulatory U-value. Recticel Insulation’s Deck VQ was more than up to the challenge.
As part of its redesign, the Courtyard Centre for the Arts in Herefordshire was extended to include a shop and a new multi-purpose meeting room. A Capital Grant on behalf of Arts Council England funded the refurbishment, which also included a reconfiguration of the front of house area to provide improved box accessibility, and an extension to its café bar area and first-floor dining space to create an outside terrace.
For the café bar area, the client required cut–to-falls insulation as part of the flat roof’s waterproofing system. However, as the waterproofing abutted a glass façade, the challenge was to forward an insulation solution that optimised the adjoining building’s windowed element in terms of the amount of light it allowed, whilst ensuring the roof itself achieved the regulatory U-value.
As the 90m2 roof was without a sufficient upstand, the insulation’s profile needed to be kept to a minimum to avoid compromising the windows’ threshold, hence the specification of Recticel’s Deck-VQ – an ultra-thin vacuum insulation panel (VIP), which solves the challenge of achieving required U-value performance in areas of minimal roof build-up.
With Deck-VQ, which is a VIP in a fully encapsulated PIR protective shell, housebuilders and homeowners can install quality insulation in limited-space areas that are out-of-bounds to other products. Therefore, it offers a reliable, cost-effective method of adding real value to a property.
Its superior thermal credentials – it has a lambda value of the core of 0.006 W/mK – comes to the fore in enabling even the most complex flat roof and terrace projects to be carried out without the need for structural changes. This results in reduced on-site working times, materials, and a more sustainable build.
Steve Evans, director at S&P Roofing, the company which installed the extension’s waterproof roof, said: “The insulation build-up needed to be minimalised to remain below the adjoining windows’ threshold, but thermally-effective enough to meet regulation U-values.
“Deck-VQ was ideal for the task. Its super-slim structure coupled with its excellent thermal performance meant both requirements were comfortably achieved. It’s a fantastically-effective product, which is also extremely easy to work with.”
