February 2022

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Project Focus: PIR MEETING THE GRADE FOR THERMAL PERFORMANCE Recticel PIR insulation has proven to be the ideal solution to ensure two new public school buildings attained regulation levels of thermal performance. Charterhouse public school in Surrey is said to be one of England’s most revered seats of learning. As part of an expansion at the site, which opened as a school in the 16th century, two new buildings designed as boarding accommodation for students are under construction. The huge project involves nearly 50 roofs – containing pitches of between 3.55° and 65° – and 60 dormer windows. With this in mind, an insulation system that was rapid to install and offered superb thermal capabilities was therefore essential to meeting the works programme’s strict time constraints. Recticel’s Eurothane GP insulation board met both requirements. Waterproofing work on the new school buildings began in August 2020. The build-up comprised a vapour barrier, which was applied to a plywood deck, and breather membrane with a standing seam. For the insulation, TSH Architects, in conjunction with contractor Salmon Solutions and Recticel, specified 140mm Eurothane GP PIR insulation board. Despite this high-performance system’s lightweight composition, it provides a thermal capability of 0.022 W/mK. Eurothane GP boards fit easily between roof rafters to create a superbly flat foundation for a waterproofing finish. For the Charterhouse project, the boards were installed across a huge, 2,200m² area. The prevalence of dormer windows provided an additional challenge, which was overcome due to Eurothane GP’s easy handling and cutting properties, ensuring these features Images: Charterhouse public school in Surrey has undergone a significant expansion. “The boards were ideal when it came to selecting an insulation system which helped the roofing element of the impressive public school buildings achieve the required U-value” were quickly and effectively insulated against instances of thermal bridging. Charlie Whitman, Project Manager and Surveyor at Salmon Solutions, said: “Recticel Insulation played a significant role in ensuring this vital project was completed to the agreed timeframe and to the highest specification. Lightweight and easy to handle, Eurothane GP insulation boards, were a pleasure to work with on this project. This benefit, along with their superb durability and consistent performance, ensured the boards were ideal when it came to selecting an insulation system which helped the roofing element of the impressive public school buildings achieve the required U-value.” Despite the stop-start nature of the works programme due to coronavirus restrictions and inclement periods of weather, the Charterhouse building’s roofs are on track to be fullywaterproofed by the agreed completion date. This is in no small part to Eurothane GP’s superb usability, resulting in a quick and easy installation that will futureproof these impressive structures against cold and damp for years to come. Contact Recticel Insulation www.recticelinsulation.com/en-gb/home @RecticelInsulUK 58 TC FEBRUARY <strong>2022</strong>
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February 2022

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