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Waitose Distribution Centre, Milton Keynes

Waitrose Distribution Centre Energysaver Rooflights

Developer: IDI Gazeley

Main contractor: McLaren Construction

Roofing contractor: FK Group

Product: Energysaver GRP composite rooflights

Completed: 2014


At a flagship distribution centre for Waitrose, 13,000m2 of Energysaver GRP composite rooflights from Brett Martin Daylight Systems was specified to bring maximum daylight into the building and significantly improve its overall energy efficiency performance.

An entirely new method of fixing both the Kingspan composite panels and the Energysaver rooflight units was developed to deliver maximum airtightness and minimise any risk of water ingress. Designed to the same depth as the composite roofing system, the Energysaver flat liner panels sit flush with the surrounding metal panels for excellent aesthetics and a neater internal appearance.

On completion, an airtightness test demonstrated that the building achieved a result of 0.51 m3/hr/m2 – exceeding the original challenging target of 1 m3/hr/m2 and the best practice of 3 m3/hr/m2 required by Building Regulations Part L2A. Based on this, the building will achieve operational savings in the region of £7,500 and 39,000kg of CO2 per year – equating to a £222,000 cost saving over its lifetime.

Find out more about Energysaver GRP composite rooflights.

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