This 1950’s bungalow had a loft conversion to Passivhaus principles in 2014. Works are now underway for a side extension ‘sun room’ again built to Passivhaus principles. The extension was originally designed with external Venetian blinds to the south and west elevations but this has been omitted and it will be interesting to see how the space performs in the summer. The cavity wall construction is 300mm wide with Ancon Teplo ties