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Climate

It is vital to ensure that the selection of building materials is appropriate for the climate in which they are used. Material performance can strongly vary, depending on the conditions to which buildings are exposed. For example, some structural materials have more appropriate thermal properties for hot or tropical climates than others, enabling better heat retention or cooling when these properties are needed. Earth based construction is not a new strategy, but one that has fallen out of favour in the last century as preferences for materials such as concrete and steel grew.  Beyond being a more appropriate material choice in some contexts, earth construction can reduce the need for brick firing or production of synthetic binders and additives, reducing fuel and material consumption, as well as reducing health risks from air emissions and chemical use.

However, a material with improved sustainability performance in one region may not provide the same in-use performance in another, and a whole lifecycle thinking approach can help ensure that material choices are optimal. Additionally, sustainability hotspots can vary between regions. For example, there may be increased impacts from extraction in one region that are not experienced elsewhere, and from increased transportation distances. The expertise of installers with a material, ability of the local supply chain to meet demand and ensure quality, and the availability of infrastructure for end-of-life processing all bear consideration when determining if a material is appropriate for a particular climate.

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Source: United Nations Environment Programme (2023). Building Materials and the Climate: Constructing a New Future. Nairobi

However, in some cases, learnings from material selection and market development can be transferred from one region to another where there are similarities in the climate. The Hub uses the Köppen-Geiger classification, which categorises regions as Tropical, Dry, and Temperate, according to the map below. Resources that apply to a particular climate are organised accordingly.

Map of Köppen-Geiger climate classification

map

 

Note: Tropical (A - regions Af, Am, Aw), Dry, (B - regions BWh, BWk, BSh, BSk) and Temperate (C - regions Csa, CSb) are used in the Sustainable Building Materials Hub to categorise resources where climate considerations apply.
Source: Beck, H.E., Zimmermann, N. E., McVicar, T. R., Vergopolan, N., Berg, A., & Wood, E. F., CC BY-SA 4.0 <https://creativecommons.org/licenses/by-sa/4.0>, via Wikimedia Commons
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2022-12-07

With the built environment responsible for almost 40% of energy-related carbon emissions globally, we must find new ways to design and construct our cities.  

Reuse of materials is a key principle within a circular economy, ensuring material value is maintained for as long as possible. Use of reclaimed materials in construction has the potential to reduce the embodied carbon of construction, minimising the need for virgin material extraction and production as well as reducing volumes of waste generated and other negative externalities.

2022-12-06

The Aluminium Stewardship Initiative (ASI) is a global non-profit standards setting and certification organisation. ASI works together with producers, users and stakeholders in the aluminium value chain to collaboratively foster responsible production, sourcing and stewardship of aluminium.

 

2022-12-06

In Senegal, the construction sector is booming. Today, concrete is used widely in construction sites but although it is produced locally and inexpensively, it is highly polluting. However, architects such as Worofila Architecture want to build differently, inspired by the raw earth houses of yesteryear and bringing local know-how back to life. These methods can greatly reduce the impacts of concrete building, whilst producing attractive buildings with excellent thermal performance.

2022-12-06

ResponsibleSteel™ is the steel industry’s first global multi-stakeholder standard and certification initiative. As a not-forprofit multi-stakeholder organisation, it has been founded to bring together business, civil society and downstream users of steel, to provide a global standard and certification initiative for steel. Standard development seeks to build consensus on what sustainability looks like for steel – including the impacts of mining, steel production, the scrap metal supply chain, greenhouse gas emissions, water use, workers’ rights, communities and biodiversity.

2022-12-06

Cement is responsible for 7% of global greenhouse gas emissions, and is predicted to grow with increasing development. The majority is used in concrete, globally the most common material in buildings. Reducing emissions from the use of cement and concrete in buildings is therefore critical in order to limit global warming. However there remain multiple gaps in knowledge about the extent of these emissions.

2022-12-01

The database contains information about 17 jurisdictions of the Organization for Economic Co-operation and Development (OECD) using and promoting life cycle approaches in their public policies. The database results from a political science research project on the environmental state and life cycle analysis.

2022-11-30

mindful MATERIALS (mM) is a non-profit leading the global definition of what is a sustainable building product-aggregating centralised data around the Common Materials Framework through an ecosystem of technology tools and systems. 

In the mindful MATERIALS Portal, you can search for over 300,000+ building products by 5 impact categories.

2022-11-30

The Saudi Green Building Council is part of SGBF, a professional civil society establishment and Non Government Organization in Special Consultative Status with Economic and Social Council at United Nations. SGBF is accredited by UNDGC, UNEP, & UNFCCC.

2022-11-30

Finland is aiming at carbon neutrality by 2035, and developing a set of policies, including legislation for low-carbon construction. These new Finnish standards and assessments aimed at reducing carbon footprints of buildings can inform wider policy development in Europe and internationally.

2022-11-30

A significant improvement in the ecological situation could be achieved by moving from a linear to a circular economy. The transformation of the economy and society is unavoidable in order to keep climate change and all its associated consequences within an economically, socially and ecologically acceptable framework.