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doors, windows, glazing & hardware JM220
for us to consider embodied carbon in addition to the Passivhaus principles at every step of the design and construction process.” Carbon reductions Two types of lower-impact insulation were used throughout the property: cellulose insulation made from recycled newspaper, and natural mineral wool materials. These helped to improve the thermal performance of the building and enhanced the occupants’ comfort levels. Moreover, by avoiding synthetic insulation options, the level of embodied carbon was further reduced, and the recycled newspaper insulation helped to decrease the amount of waste going to landfills. The project also included some additional sustainability measures, including two large inset solar photovoltaic arrays. These generate an abundance of renewable energy, which provides energy, heating and hot water. The project also included a centralised mechanical extraction system that allows fresh air to circulate through the building and stale air to leave the house.
Accurate timber design and construction Timber allowed the project to be quickly and accurately built, but it also helped lower embodied carbon. Timber was used in the building’s frame, windows, doors and cladding to help reduce the building’s environmental impact. Due to the complex designs, Sow Space sent the timber frame supplier its highly detailed Archicad model. From this, the timber manufacturer created its own 3D model which fed into its factory manufacturing systems. Sow Space then integrated the timber supplier’s designs back into the Archicad model, allowing any small clashes to be spotted and resolved before the timber frames were made. Simon explained: “The window, door and roof light schedule
function in Archicad helped to coordinate opening sizes between the timber frame and window suppliers and to track changes to the specification. Using BIM throughout this project helped to maintain accuracy and coordination during both design and construction.” A light-filled, sustainable home for the future This new-build family home set out to capitalise on the surrounding meadow landscape, have an efficient construction process and be energy-efficient. This project did just that and more. It helped create a light and airy home that allows the family to continue to grow and improve their quality of life. By following Passivhaus principles, the family gets to enjoy a home that is truly unique and comfortable and makes nature part of their everyday lives for years to come, while simultaneously reducing their environmental impact.
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