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Rookery Building

Ruskin College, Oxford

Airtec Stone
We were thrilled to be a key part of this £7.2 million extension, which featured Airtec stone for a stylish, contemporary and practical finish.
alsecco Airtec ventilated rain-screen façade has been installed as part of Penoyre and Prasad’s new extension to the Rookery building at Ruskin College, Oxford. The project consolidates the college’s campus – which was previously split across two sites – into one.
Specified for its lightweight nature, the Airtec stone panels are up to 60% lighter than 40mm-thick stone-work. To support such a vast dead-load on vertical surfaces, the substructure must be incredibly robust and consequently, it is difficult to achieve.
We were delighted the Airtec stone system was specified for such a prestigious landmark project. The system is up to 60% lighter than solid stone systems, yet any stone can be used. The Portland Stone used here is exactly as designed.
Ben Parry, Managing Director, alsecco UK Ltd
However, alsecco Airtec system weighs just 37–42kg/m2, reducing the need for extensive support structures. The composite panel consists of a 5–10mm thick stone veneer bonded to a lightweight aerated clay concrete base. In total, 1,200m2 of the stone rain-screen cladding system was used in Limestone Palais finish by architects Penoyre and Prasad on the Rookery building
Brackets used to support the rain-screen cladding were installed with isolation pads to prevent any cold bridging within the system. Using a combination of minimum joints, corner and lintel details, the cladding system gives the effect of solid stone.