215mm thermal blockwork to first floor level with thin bed mortar system and Kingspan 100mm insulation to the external face to create a thermal store

Beam and block floor with 100mm Kingspan insulation and under floor heating

Potton timber frame to first floor with 100mm Kingspan insulation between frame and 50mm across internally - externally clad with chestnut clapboard (sustainable and indigenous) or rendered

300mm rockwool insulation to loft space

Heating system via air source heat pump

Energy efficient lighting throughout

Rainwater Harvester feeding toilets, washing machine and dishwasher

18no.  Photovolaic Solar Panels in the roof totalling 1 kW

Nu-loc roofing system with Welsh slate uses 40% of the material of conventional roofing and uses smaller than average slates, utilising material which would otherwise be quarry waste. 

Sustainable Timber frame construction - FSC timber (Forest Stewardship Council runs a global forest certification scheme which ensures that timber produced in 'certified' forests can be traced from the forest of origin to the end use)

Windows are made of argon filled solar glass units, the glazed with Guardian energy efficient glass

Recycled building materials for landscaping

High levels of insulation and energy efficient design make this the most energy efficient house ever built in the fenland district

 Air source heat pump operates in the same way as a fridge or air conditioning unit – only in reverse.

Coolant is pressurised and when the pressure is released, heat is given off. This heat is used to heat water via a flow and return pipe, which is stored in a pressure vessel in the loft space. In the current layout, it is promoted as being 4 times more efficient than the most efficient condensing boiler! (by the heating engineers)