![girl looking out of a window](/sites/default/files/public/styles/page_header_medium/public/2025-06/reynaers-aluminium-sustainability-1.jpg?h=f0ab467d&itok=I5yVE8_j) # Sustainability. From every angle. Sustainability in the building sector is an important and evolving challenge — one that calls for holistic and long-term thinking. At Reynaers Aluminium, we believe sustainability cannot be solved by looking at just one number or just one perspective. You have to see the whole picture. We take a comprehensive approach, considering every angle of sustainability. ![Two Reynaers Aluminium installers dismantling old windows on site.](/sites/default/files/public/styles/image_max_width/public/2025-05/reynaers-aluminium-lifecycle-1_0.jpg?itok=9AC2DFy9) ## Sustainability must be seen over the whole lifecycle of a building Sustainability takes a broad perspective to include construction, operation, renovation, disassembly, recycling and more. It is critical to consider things from every angle, and not just focus on the initial construction alone. [ Read more ](/sustainability-from-every-angle/lifecycle-thinking "Read more") *There are many dimensions to sustainability.* ## And they all contribute to more futureproof buildings. ![Modern concrete villa in forest.](/sites/default/files/public/styles/tabbed_block/public/2025-05/reynaers-aluminium-eu-green-deal-1.jpg?h=6d99d84c&itok=GwfFDa58) ### Many dimensions Discover how we explore sustainability at our company, in the products and services we create, and the buildings we help complete. [ Discover ](/sustainability-from-every-angle/eu-green-deal-compliance "Discover") ## Sustainability is more than just one number. When it comes to the carbon levels of aluminium, the conversation often starts and ends with only one question: what is your number? ![Angled view of vertical forest building project.](/sites/default/files/public/styles/image_square/public/2025-05/reynaers-aluminium-project-trudo-1.jpg?h=d94088b7&itok=KXTrXcH4) ![Man holding aluminium billet sample.](/sites/default/files/public/styles/cta_paragraph_image/public/2025-05/reynaers-aluminium-carbon-1.jpg?h=f0ab467d&itok=YuTBJ67E) We cannot recycle our way out of the problem. That is why we believe in the optimal blend. [ Read more ](/sustainability-every-angle/more-one-carbon-number "Read more") ![Man with glasses holding black aluminium profile.](/sites/default/files/public/styles/image_max_width/public/2025-05/RA_shoot_23_april_2025-276.jpg?itok=ZiijoKEL) ## Sustainability is in our DNA. As a family business with over 60 years of experience, we focus on the legacy we leave behind for the next generation. We approach sustainability with integrity, depth and a holistic mindset.​​​​​​​ Our way of working is based on a philosophy of collaboration. [ Read more ](/sustainability-every-angle/sustainability-our-dna "Read more") ## Discover more angles - ![ASI logo in front of modern villa in a forest.](/sites/default/files/public/styles/teaser_small/public/2026-03/asi-banner%20%281%29.png?h=08a656c4&itok=lRwpso_P) Showing sustainable responsibility thanks to the Aluminium Stewardship Initiative (ASI) [ Showing sustainable responsibility thanks to the Aluminium Stewardship Initiative (ASI) ](/inspiration/stories/sustainability/asi "Showing sustainable responsibility thanks to the Aluminium Stewardship Initiative (ASI) ") - ![Man with glasses looking closely to aluminium corner sample.](/sites/default/files/public/styles/teaser_small/public/2025-05/reynaers-aluminium-eco-design-1.jpg?h=f0ab467d&itok=XYus9O9g) Eco Design [ Eco Design ](/sustainability-from-every-angle/eco-design "Eco Design") - ![ReTurn logo in front of pile of aluminium scrap in blue bin.](/sites/default/files/public/styles/teaser_small/public/2026-03/reynaers-aluminium-return-banner.png?h=61f1cca7&itok=GrqgwoVd) ReTurn: Reynaers Aluminium turns waste into resources with new closed-loop systems [ ReTurn: Reynaers Aluminium turns waste into resources with new closed-loop systems ](/inspiration/stories/sustainability/closed-loop-systems "ReTurn: Reynaers Aluminium turns waste into resources with new closed-loop systems") - ![Woman drinking coffee behind glass window on a rainy day.](/sites/default/files/public/styles/teaser_small/public/2022-06/Reynaers-Aluminium-water-tightness-1.jpg?h=8c1344d8&itok=jDlpLXoV) Extreme Weather Resilience [ Extreme Weather Resilience ](/sustainability-from-every-angle/extreme-weather-resilience "Extreme Weather Resilience ") - ![ Modern concrete villa in forest](/sites/default/files/public/styles/teaser_small/public/2025-05/reynaers-resized-8MP.jpg?h=09198c8e&itok=4gOiPRxa) EU Green Deal compliance [ EU Green Deal compliance ](/sustainability-from-every-angle/eu-green-deal-compliance "EU Green Deal compliance") - ![Modular building panel lifted next to skyscraper.](/sites/default/files/public/styles/teaser_small/public/2025-05/reynaers-aluminium-modularity-1%20%281%29.jpg?h=a51a5cf9&itok=GehWY9uJ) Modularity & Ease of Disassembly [ Modularity & Ease of Disassembly ](/sustainability-from-every-angle/modularity-disassembly "Modularity & Ease of Disassembly ") - ![Top view man and woman sitting at table drinking coffee.](/sites/default/files/public/styles/teaser_small/public/2025-05/reynaers-aluminium-certified-data-1_0.jpg?h=f0ab467d&itok=5-ijmyqM) Certified & Traceable Information [ Certified & Traceable Information ](/sustainability-from-every-angle/certified-traceable-information "Certified & Traceable Information ") - ![Woman looking out of window at nightfall.](/sites/default/files/public/styles/teaser_small/public/2025-05/reynaers_linkeroever2-min.jpg?h=298ea7f7&itok=W0Nk7OIo) Energy Efficiency [ Energy Efficiency ](/sustainability-from-every-angle/low-energy-during-use "Energy Efficiency") ## Frequently Asked Questions ### Are Reynaers Aluminium windows and doors sustainable? Sustainability in the building sector should be considered from many different angles, both on building and product level. Our joinery systems are made of **one of the most circular materials available, aluminium**. It can be recycled an infinite amount of times, without loss of quality. Moreover, as a standard, we provide **low carbon building elements**, such as low-carbon aluminium profiles and thermal breaks. Reynaers Aluminium is **ASI Standard certified**, meaning that the aluminium we use in our systems is ethically sourced, with respect for people and our planet. And we participate in **local closed-loop systems** to limit waste and support end-to-end traceability. Next to responsible sourcing tactics, we apply **Eco Design principles** that help minimise the impact of our systems even further. Increasing the lifespan of our solutions and buildings starts at the drawing board by designing out waste, designing in modularity, designing for adaptability and flexibility, designing with disassembly in mind, ... Nothing is left to chance. Most of our systems come in multiple insulation levels, down to Passive House thermal performance. By focusing on **energy efficiency** and **weather performance**, tested and verified in our expansive Technology Centre, we help limit the operational carbon emissions of buildings drastically. Finally, by providing clear and official documentation, we can help professionals earn **green building certificates** and navigate **sustainable legislation** more easily. We are your expert guide that provide the right tools and solutions for your building needs. ### What is the carbon footprint of Reynaers Aluminium profiles? The average carbon footprint of our aluminium profiles in 2025 is **3.31 kg CO2e/kg** aluminium (billet + extrusion), which is a -35% reduction compared to our 2019 baseline. We plan to further reduce it to 2.81 by 2030 (-46% vs. 2019), which is in line with EU Green Deal legislation. Additionally, **more than 80%** of our aluminium supply consists of low-carbon aluminium (European distribution network). ### What is low-carbon aluminium? While "low-carbon" primary aluminium is not formally defined, it encompasses all virgin material with a carbon footprint equal to or lower than 4.38 kgCO2/kg aluminium (billet + extrusion). In practice, low-carbon aluminium is **a mix of recycled aluminium and low-carbon primary aluminium produced with clean energy.** For a full analysis of the topic, you can visit the Aluminium Stewardship Initiative (ASI) website for more details. [ To the ASI website ](https://aluminium-stewardship.org/low-carbon-aluminium "To the ASI website") ### What is the difference between Sustainability From Every Angle and Reynaers Act? **Sustainability. From Every Angle** is Reynaers Aluminium's point of view on how it can support the building sector and its partners in the value chain to become more sustainable. The messaging focuses on the many dimensions of sustainability in the construction sector, looking beyond carbon figures as such and considering the impact of building materials and processes during the full lifecycle of a building. **Reynaers** ***Act*** is the over-arching corporate sustainability program of Reynaers Group, launched in 2021. It encompasses many different sustainable initiatives, including the yearly sustainability report "Our sustainable road ahead". ## Sustainability starts with asking the right questions. [ Get in touch ](/contact "Get in touch")