The building structure is built using a ‘Modern Method of Construction’ known as Insulating Concrete Formwork (ICF). The ICF building system is based on large, hollow, lightweight polystyrene forms that interlock together without glue or mortar to provide a formwork system into which concrete is poured. Once set, the concrete becomes a high strength, air-tight structure. The polystyrene remains in place as insulation, and is finished externally with a high-tech render system.
The ICF structure helps to contribute towards the high performance of the building envelope demonstrated by:-
- Reduced CO2 emissions for the building, achieving one of the mandatory elements of Code Level 3 – a minimum 25% improvement over Building Regulations Part L.
- An Air Permeability test returned results of an average of 3.79 m3/(h*m2) compared to Part L requirement of 10 m3/(h*m2).
- Airborne and impact sound insulation tests results, which were at least 8dB better than Part E minimum standards.
The Insulating Concrete Formwork system used has been awarded an A+ by the BRE under its Green Guide to Specification assessment scheme. The system also produces minimal waste during construction as the waste materials can either be recycled or re-used.