Aggregate Industries provides Lytag product for 20 Old Bailey redevelopment

Aggregate Industries has been awarded a new contract to provide its Lytag product in the £60 million modernisation of the 20 Old Bailey redevelopment in London.

The building, designed by BuckleyGrayYeoman and located close to St. Paul’s Cathedral, is due to be completed in Spring 2017. The redevelopment, awarded to ISG, will involve extensive structural alterations, internal remodelling, and the addition of two further floors at roof level.

A large atrium running approximately 100 metres at about 6 metres wide, core to the building’s restructure. The challenge for the Specialist Screed Flooring Solutions was to retain a light, versatile quick dry floor screed onto which mobile access plant could be used.

Aggregate Industries and its Lytag lightweight secondary aggregate has been designed and manufactured to meet the complex requirements of modern construction practice, Lytag produces one of the fastest drying, lightweight offerings to the market.

By using Lytag, ISG will be able to reduce the dead load of the construction by approximately 40 per cent over conventional screed, whilst maintaining its structural integrity.

In addition, this approach improves sustainability and reduces the demand for natural quarried material. The use of secondary aggregate will help the building gain additional valuable points towards achieving BREEAM ratings.

Barry Mellor, Commercial Manager at Lytag, said: “The beauty of lightweight solutions is that it can offer exactly the same level of structural performance as normal weight aggregate however it is significantly lighter, thus reducing the dead load of a building. For 20 Old Bailey this has not only enabled greater design freedom but reduced the overall construction programme therefore reducing associated construction costs.”

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