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About the project Hringvangur—the first (and only so far) Icelandic network for circular construction—was opened as a public-private project as part of the Nordic Networks for Circular Construction (NNCC) project, realised in Iceland by Húsnæðis- og mannvirkjastofnun (HMS) and Grænni byggð . In 2024, Hringvangur was launched and hosted by Grænni byggð with support from HMS and Verkis. Now, operations must be sustained in the following year and built on the existing solid foundation. Overview The project's primary goal is to continue Hringvangur's statutory activities, which are, among others:  managing the platform to promote circular projects and solutions in Iceland; managing the website as a database of existing knowledge on various aspects of circular construction; updating stakeholders with the state-of-the-art; acting as a contract platform to facilitate cooperation between stakeholders. Hringvangur website The project received a grant from Askur - mannvirkjarannsóknasjóður which is funded by Húsnæðis- og mannvirkjastofnun (Icelandic Housing and Construction Authority), Ministry of Social Affairs and Housing and the Ministry of Culture, Innovation and Higher Education.

About the project titled: HringRás (Circularity) (2022-2023). Carbon-neutral building in Icelandic conditions About the project The main goal of the project is to define a carbon-neutral building under Icelandic conditions . Project partners The partners of the project are: - Green Building Council Iceland; - Elín Þórólfsdóttir (EFLA, University of Iceland, HMS); - Þórhildur Fjóla Kristjánsdóttir (EFLA, Reykjavík University). View the project's first report here Part of the project was to develop a certification system for carbon-neutral building under Icelandic conditions. The report below provides instructions on how carbon-neutral buildings in Iceland can be developed and lays the groundwork to the certification system NettóNúll. View the project's report on NettóNúll here The project received a grant from Askur – Housing and Construction Research Fund.

Past projects On-going projects Here you can find our current and past projects that cover various topics, e.g., circular construction, BREEAM certification, and a net-zero building in Iceland. Projects Mynd: Ástrós Steingrímsdóttir On-going projects Bauhaus Goes North (BGN) 2024-2027 About Better data on carbon emissions from construction sites using real-world data 2025-2026 About Hringvangur – the Icelandic network for circular construction 2025-2026 About Carbon-neutral building in Icelandic conditions 2023-2025 About Guidelines to emission-free construction sites (BGF 2.9) 2023-2025 About Investigate the possibilities and opportunities for the increased implementation of a circular economy in the use of building materials 2025-2026 About Turf houses – can we learn from the past? 2025-2026 About Past projects Establishing clear requirements for reporting actual waste volumes (BGF 4.7 ) 2024-2025 About Establishing clear requirements for reporting actual waste volumes (BGF 4.7 ) 2024-2025 About Guidelines for the reuse of building materials and responsible demolition (BGF 4.9 , 4.10 ) 2024-2025 About CIRCON (The circular economy in construction: eco-design of circular buildings) 2022-2024 About Partners Newsletter CIRCON website Nordic Circularity Accelerator (NCA) 2023-2024 About Report Nordic Networks for Circular Construction (NNCC) 2021-2024 About Report Nordic Sustainable Construction - Emission-free Construction Sites 2022-2024 About Energy use - designed and measured 2022-2024 About BREEAM - An cost-benefit analysis of sustainable building certificates 2022-2023 About HringRás (Circularity) 2022-2023 About Mapping and guidance on the utilization potential of different construction waste 2022 About

Some information about EPDs,PCR and some EPDs for Icelandic products. Environmental product declarations (EPDs) An environmental product declaration (EPD) is a document providing confirmed information about the environmental impact of the product's life cycle based on the results of performed life cycle assessment (LCA). The EPD also contain the information required by the specific Product Category Rules (PCR) and General Programme Instructions . Eventually, EDP is verified by a third party who evaluates the analysis independently. As the methodology of its preparation is regulated, EPD help build transparency and increase confidence that environmental claims made by manufacturers are accurate. In many ways, such a statement is similar to the ingredient descriptions of food products, but instead of information on nutritional value, there is information on the product's environmental impact. The first Icelandic EPD was published for Steinull , based on the analysis done by EFLA , confirmed by SINTEF building research in Oslo and published by EPD-Norge . More information on EPDs can be found on the International EPD System website or in the presented video. An open EPD database can be found on the InData network website . Product Category Rules (PCR) A Product Category Rule provides specific instructions for how life cycle assessment (LCA) should be performed for a particular product category. More precisely, it includes, among others, the so-called system boundaries (which processes and product's life cycle stages should be considered) and declared or functional units, which should be used for specific products. More information on PCR can be found on the International EPD System website , and the PCR library can be found here . Some of the EPDs for construction products and materials in Iceland Plasterboards Timber Paints Wall coverings Cement and masonry mixtures Concrete Insulating materials Building blocks Steinefni Pípur

Some EPDs on pipes in Iceland. Environmental product declarations (EPDs) - Wall coverings in Iceland Pre-insulated single steel pipes and fittings Set ehf./GmbH

Green Building Council's (Grænni byggð) events in 2023. Newsletters GBCI publishes a monthly newsletter. Here you can find links for newsletters that GBCI has published in the last 12 months. Mynd: Ástrós Steingrímsdóttir June 2026 In this newsletter: New Publications 📖 Reuse handbook Past events 👏 NEB Transforming the North: Best Practices in Circular Built Environments To think about 💡 Reminder: The Green Shovel 2026 - Open nominations Good news ☀ Arnhildur Pálmadóttir city artist of Reykjavík 2026 Networking groups 🤝 May 2026 April 2026 January 2026 GBCI Day August 2025 March 2026 December 2025 October 2025 June 2025 February 2026 November 2025 September 2025 May 2025

Some EPDs on wall coverings in Iceland. Environmental product declarations (EPDs) - Wall coverings in Iceland ALUCOBOND Alucobond 3A Composites GmbH ISOPAN Sandwich panels with steel facings and expanded polyurethane or polyisocyanurate insulating core KME KOPARINN TECU® Oxid copper sheets and strips VM ZINC ALPOLIC Alpolic Composite Panels KME KOPARINN TECU® Bronze copper alloys sheets and strips KME KOPARINN TECU® Patina copper sheets FALZONAL Falzonal aluminium outdoor panels KME KOPARINN TECU® Classic copper sheets and strips VM ZINC ANTHRA-ZINC QUARTZ-ZINC PIGMENTO

Green Building Council Iceland's materials on other topics than construction and demolition waste or certification systems. Other published materials On this page you can find reports from all over that address sustainable construction. Click the reports to read them. 2020 Let's build a greener future (Byggjum grænni framtíð) - Summary of the state of environmental issues in the construction industry in the Nordic countries (in Icelandic)

Information on circular economy principles in construction. Construction boards The handbook was created as an early-stage guide for those considering reuse. The guide focuses primarily on reuse potential, with practical tips and the legal and hazard-related barriers associated with it. Additionally, it covers recyclability and potential carbon emission savings. Below is a list of materials, along with their reuse potential and associated hazards; the full handbook is available here. Reuse handbook Interior fixtures and fenestration Cladding Flooring Insulation Roofing Construction materials reusable without/with a few minor identified issues reusable with several minor issues identified reusable with several major issues identified reuse is possible only in rare cases reusable with some minor and major issues identified Construction boards Reuse potential Chipboard MDF board OSB Plywood Plasterboard Cement-based wall elements Identified hazards* formaldehyde and other VOCs, halogenated flame retardants, wood dust, mould/rot, PCBs formaldehyde and other VOCs, halogenated flame retardants, wood dust, mould/rot formaldehyde and other VOCs, wood dust, mould/rot formaldehyde and other VOCs, wood dust, chromated copper arsenate (CCA), mould/rot asbestos, gypsum dust, biocides asbestos, respirable crystalline silica (RCS) * excluding hazards related to surface treatment (e.g. paint) Plotur Interior fixtures and fenestration Reuse potential Ceiling panels Doors Sanitary equipment Ventilation ducts Windows Identified hazards* mould, dirt asbestos (older fire doors) asbestos, pathogens Dirt asbestos, PCBs * excluding hazards related to surface treatment (e.g. paint) Interior Cladding Reuse potential Aluminium panels (flat and corrugated) Ceramic façade systems Copper and zinc sheet cladding Fibre cement panels Metal composite panels Natural stone Timber cladding Identified hazards* not identified respirable crystalline silica (RCS) metal fumes asbestos, respirable crystalline silica (RCS) fire-related risks not identified wood dust * excluding hazards related to surface treatment (e.g. paint) Klaedding Flooring Reuse potential Carpet Ceramic tiles Laminate flooring Engineered wood flooring Identified hazards* dirt, pathogens, VOCs, mould asbestos, respirable crystalline silica (RCS), mould formaldehyde and other VOCs, mould/rot formaldehyde and other VOCs, mould/rot * excluding hazards related to surface treatment (e.g. paint) Golefni Insulation Reuse potential Expanded Polystyrene Insulation Metal insulation panels Mineral wool Polyethylene vapour barrier Identified hazards* CFC and HCFC blowing agents, HBCD flame retardants, fire-related risks not identified mould - * excluding hazards related to surface treatment (e.g. paint) Insul Roofing Reuse potential Corrugated steel Breathable roof membrane Bitumen roof underlay Bituminous roofing membrane Gutters and downspouts Identified hazards* not identified - - - not identified * excluding hazards related to surface treatment (e.g. paint) Þakefni Byggingarefni Construction materials Reuse potential CLT Identified hazards* VOCs, wood dust, mould/rot Concrete (cast-in-place) respirable crystalline silica (RCS) Concrete (precast) respirable crystalline silica (RCS) Glulam VOCs, wood dust Steel beams not identified General timber wood dust, mould/rot Chemically-treated timber creosote, chromated copper arsenate (CCA), pentachlorophenol, wood dust, mould/rot Strength-graded timber wood dust, mould/rot Thermally-treated timber wood dust, mould/rot * excluding hazards related to surface treatment (e.g. paint)

Some EPDs on concrete in Iceland. Environmental product declarations (EPDs) - Concrete in Iceland BM VALLÁ Berglind C25/30 BM VALLÁ Berglind Svan C25/30 BM VALLÁ Berglind C30/37 BM VALLÁ Berglind Svan C30/37 BM VALLÁ Aflsteypa C35/45 FRAUÐSTEYPA EHF Hebel Aereated Concrete Steypustöðin Ready-mix concrete C35/45 XC4 XF3 XD3 D22 S4 Ae Steypustöðin Ready-mix concrete C30/37 XC4 XF2 D22 S4 Ae Steypustöðin Ready-mix concrete C30/37 XC3 D16 S4 Steypustöðin Ready-mix concrete C25/30 XC3 XF1 D22 S4 Ae

About World Green Building Council and Europe Regional Network. World Building Council The Green Building Council Iceland is a member of the World Green Building Council (WorldGBC) since November 2018. WorldGBC is an umbrella organisation of over 70 Green Building Councils around the world enabling its members to work closely on reducing emissions from the building and construction sector by 2050. If you want to know more about the WorldGBC and its activities, courses, and events, click here . From World Green Building Councils AGM, which GBCI's CEO, Áróra Árnadóttir, and GBCI´s project manager, Katarzyna Jagodzińska, attended. Europe Regional Network WorldGBC network is divided into five regional networks as different regions face different challenges. We are a part of the Europe Regional Network (ERN), gathering not only European Green Building Councils but also key regional partners from the construction and materials sector, and thousands of other members. The ERN's mission is to ensure that sustainability is embedded across the whole sector value chain by leveraging the power and knowledge of our network to transform the European buildings market. To know more about ERN activities, click here . From World Green Building Councils AGM, which GBCI's CEO, Áróra Árnadóttir, and GBCI´s project manager, Katarzyna Jagodzińska, attended.

About Nordic Green Building Councils Network. Nordic Green Building Councils Network To strengthen the transition of Nordic countries to more sustainable, together with Green Building Council (GBC) Denmark , GBC Finland , GBC Norway , and GBC Sweden , we established the Nordic Green Building Councils Network (Nordic GBC Network). We realise our goals by, among others: - organising Nordic Green Building Council Conferences in 2011, 2013, and 2015; - realising the Nordic Urban Development project (2014-2015) aiming at creating the framework for sustainable urban development; - realising the Nordic Guide to Sustainable Materials project (2014-2015) aiming at creating guidelines on sustainable, functional criteria for building materials , which included specificity of the Nordic construction market (e.g., materials, production methods, practices used, legislation, and market drivers). - organising educational and professional webinars: > Nordic GBC Webinar #6: Nordic Sustainable Infrastructure Webinar (13/09/2023); > Nordic GBC Webinar #5: Circular Economy in the Real Estate and Construction Sector (03/10/2022); > Nordic GBC Webinar #4 : Resilience and Climate Adaptation (19/01/2022); > Nordic GBC Webinar #3 : Renovation of buildings and the Circular Economy (30/09/2021); > Nordic GBC Webinar #2 : How can we half emissions from construction in two? (27/05/2021).