Post occupancy evaluation of social housing designed and built to Code for Sustainable Homes Levels 3, 4 and 5

In the housing sector, carbon emissions arise primarily through the consumption of energy to heat, light and ventilate our homes. Significant improvements in UK housing energy performance have been driven both by changes in legislation, and by the introduction of the Code for Sustainable Homes in 2007. Compliance with certain levels of this Code has been adopted as policy by Local and Regional Authorities, and social housing providers. The evaluation of the performance of low carbon housing requires the assessment of increasingly complex building services technology, and occupant behaviour. This added services complexity, and the expectation that tenants understand how to use it, has led to a number of unintended consequences which have resulted in a higher risk of performance failure. This study comprises the detailed evaluation of seven new social housing dwellings, designed and built to Code levels 3, 4 and 5, including comprehensive environmental monitoring, measurements of the consumption and generation of resources, and social surveys of the occupants. The results show that as the Code levels increase there is a reducing energy and water consumption rate, and an increasing energy generation rate, but only at the expense of a significantly increased risk of services system failure

Carbon regulation and pathways for institutional transition in market-led housing systems : a case study of English housebuilders and zero carbon housing policy

In this paper, we argue that current research on carbon regulation neglects the complex interactions of institutional norms and market behaviour that characterise responses to regulatory change. We draw on empirical research undertaken with English housebuilders and housing market stakeholders to examine how transitional pathways towards a low-carbon housing future might be advanced and consider the implications of such for carbon regulation and low-carbon economies. Our core proposition is that carbon regulation research can no longer ignore the impact of institutionally constituted market behaviour in shaping pathways and transitions towards low-carbon futures

Resilience, redundancy and low-carbon living: co-producing individual and community learning

There is an acknowledged need for buildings and communities to be more resilient in the face of unpredictable effects of climate change, economic crises and energy supplies. The notion and social practices involving redundancy (the ability to switch between numerous available choices beyond optimal design) are explored as an aspect of resilience theory. Practice and Social Learning theories are used as a lens through which to explore the available redundancy in housing and home environments to help prevent performance failure through unexpected circumstances or in response to varying user needs. Findings from an in depth UK housing case study show how redundancy is linked with the capacity to share resources and to learn both individually and collectively as a community. Such learning in relation to resilient low-carbon living is shown to be co-produced effectively through participatory action research. The benefits of introducing extra redundancy in housing design and community development to accommodate varied user’s understanding and preferences are discussed in relation to future proofing, value and scalar issues. Recommendations include better understanding of the design, time and monetary contribution needed to implement social or technical redundancy. These costs should be evaluated in context of savings made through greater resilience achieved

The greenhouse gas emissions and mitigation options for materials used in UK construction

The UK construction industry faces the daunting task of replacing and extending a significant proportion of UK infrastructure, meeting a growing housing shortage and retrofitting millions of homes whilst achieving greenhouse gas (GHG) emission reductions compatible with the UK's legally binding target of an 80% reduction by 2050. This paper presents a detailed time series of embodied GHG emissions from the construction sector for 1997–2011. This data is used to demonstrate that strategies which focus solely on improving operational performance of buildings and the production efficiencies of domestic material producers will be insufficient to meet sector emission reduction targets. Reductions in the order of 80% will require a substantial decline in the use of materials with carbon-intensive supply chains. A variety of alternative materials, technologies and practices are available and the common barriers to their use are presented based upon an extensive literature survey. Key gaps in qualitative research, data and modelling approaches are also identified. Subsequent discussion highlights the lack of client and regulatory drivers for uptake of alternatives and the ineffective allocation of responsibility for emissions reduction within the industry. Only by addressing and overcoming all these challenges in combination can the construction sector achieve drastic emissions reduction

Dragon-breath and snow-melt: know-how, experience and heat flows in the home

People manage heat flows in their homes through diverse skilful engagements, including interactions with a wide range of materials that help to generate heat, move it around, or prevent its movement. Using these strategies, we try to ensure that heat is where it is needed, when it is needed, and can also try to minimise its wastage (heat-out-of place and heat-out-of-time). However, the practical knowledge or know-how used in managing these thermal flows has received little attention to date, despite its relevance to topical debates on energy consumption. This paper explores how experience-based know-how is used in monitoring and managing heat flows in the home. I also consider three processes that stimulate the development of new know-how: changes in the life-course, in material arrangements, and in shared understandings. These themes are illustrated using quotes from various sources, such as web forums and advice sites. Finally, I consider how these ideas relate to wider theories of experience and know-how, and offer some reflections on what this approach might mean for research, policy and practice on sustainable energy use