Our client had recently moved into this 1930s bungalow which had already been twice extended. Having moved from a Passivhaus, the client brief required not only internal remodelling but also significant thermal upgrading to create a home with very low energy use.
We introduced high levels of insulation to the external walls, roof and floor. Windows and external doors were replaced with new Passivhaus-standard triple-glazed items. The upgraded heating system included underfloor heating, mechanical ventilation with heat recovery, and solar PV collectors.