First Floor addition to semi-detached house
**Winner** Sustainable Building Award Marrickville Medal 2016. The Marrickville hempcrete house is an alteration addition to an existing single storey semi detached house in Sydney. Acoustic requirements for aircraft noise and a shared chimney made this a challenging project. We wanted to achieve the right solution that did not compromise thermal performance and aesthetic of the project. Whilst complying with acoustics we have manged to create a building that will not only have good acoustics, but will provide incredible thermal performance with over R5.6 insulation in the roof and R2.85 in the walls. Hempcrete has been used in both the walls and the roof. This has been an incredible collaborative process with a dedicated builder with a great eye for detail. The owners moved in at the end of November 2015 and have already experienced temperatures of 27 degrees internally when externally the temperature hit 40 degrees.