PhD finding provides comfort for construction industry
“The recent legalisation to create warm and dry homes, coupled with the increase in new housing designs and different communities, requires us to rethink how we quantify and deliver comfort,” says Te Herenga Waka—Victoria University of Wellington PhD graduand Germán Molina.
Germán’s PhD research aims to help achieve this goal through his ‘Feeling of Comfort’ model, which balances subjective and objective elements of comfort within residential homes for the first time and aims to help deliver comfort across New Zealand’s diversifying population and buildings.
“My model is timely as the ongoing work of Kāinga Ora and industry regulators, such as the Building Research Association of New Zealand, target increasing comfort and health metrics as priorities in existing and new houses.”
Germán explains that in the context of housing and buildings, comfort is generally defined as a subjective ‘state of the mind’ that expresses satisfaction with the built environment. While correct, this definition struggles to translate into useful insights for delivering liveable homes and offices. It often leaves building professionals unsure how to define this ‘state of the mind’ and ensure that their structures are truly comfortable.
It is common for architects, housing policymakers, and building scientists to develop distinct criteria of comfort based on quantifiable environmental factors such as air temperature and humidity, Germán says. However, this definition does not take into account more subjective measures of comfort, and in many ways can even work against them.
Another challenge when it comes to creating comfortable homes is that it can be difficult can to anticipate comfort levels before construction in new designs when using different material combinations other than traditional bricks and timber, Germán says.
“Homebuilders like Kāinga Ora and private companies are increasingly constructing apartments and townhouses, and the well-documented construction material shortages felt across the industry resulted in many builders turning to new materials such as plastics for cladding and insulation. These changes introduce further complexities into ensuring homes and offices are comfortable in the design stage.”
After graduating in November 2021, Germán will deliver his research to industry through his Buildings for People initiative that is run with his supervisors Dr Michael Donn from the Wellington School of Architecture, Dr Micael-Lee Johnstone from the School of Marketing and International Business, and Dr Casimir MacGregor from the Building Research Association of New Zealand (BRANZ). The Buildings for People website offers resources to understand the subjective and objective elements that contribute to comfort and a blog about recent news, such as insulation requirements in the New Zealand Building Code, and how it relates to designing comfortable homes.
Germán will also work with the Wellington School of Architecture to engage with home builders and industry policymakers and use his findings to improve the homes and offices across New Zealand's growing cities. He is part of the School’s new industry outreach programme that is presenting relevant research at businesses and organisations across Wellington.
“The ‘Feeling of Comfort’ model has the advantage of being concrete enough to inform regulators and architects while also reflecting comfort's 'state of the mind' principle,” Germán says.
To find out more, email Germán Molina on german.molinalarrain@vuw.ac.nz or contact his PhD supervisors Michael Donn on Michael.Donn@vuw.ac.nz.