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Source: Trouw (October 8, 2023) Context : This Dutch archive document serves as background information for Kleiburg phase 1 and does not constitute a recommendation to postpone insulation measures. It may help to place choices regarding glass and window frames in a broader, future-oriented context. Short summary This article describes a new generation of so-called smart windows that TNO is working on. These windows have a special coating that automatically responds to the outside temperature: in summer , solar heat is largely blocked out; In winter , solar heat is transmitted and indoor heat is retained better. According to TNO, these windows can significantly reduce energy consumption, particularly by reducing the use of heating and (where available) air conditioning. The technology is still in development: prototypes exist, but large-scale implementation is not expected until around 2026 at the time of writing. Why is it relevant to choose triple glazing? This article demonstrates that window technology is developing rapidly. It emphasizes that triple glazing is currently a proven, robust solution , while smart coatings may become a future addition or alternative . This is relevant for our homeowners' association when considering whether to invest now in proven technology (triple glazing), or to consciously wait for innovations that are still uncertain in terms of cost, availability, and applicability in existing apartments. Source Maarten van Gestel, Good for the cold months: these 'smart' windows keep heat out in the summer and retain it in the winter , Trouw, October 8, 2023. Download the full Dutch article here: Do you have any questions, ideas or would you like to share your experiences? Even if this is a publication not produced by us, feel free to email us at duurzaamkleiburg1@gmail.com . Together we'll chart the path to a future-proof Kleiburg.

Resources & tools: all blog articles and various publications on this website; glossary final report HU full-time; Google Search, Perplexity and ChatGPT. AK: Acoustic ventilation A ventilation system that uses sound-absorbing materials and technologies to optimize both air circulation and noise reduction. AGM: General Members' Meeting Meeting in which owners jointly make decisions about plans, budgets and implementation within the VvE. Assets The amount of energy converted or transferred per unit of time, often expressed in watts (W). Brackets / consoles Cantilevered concrete parts in the facade construction that can cause additional heat loss and cold bridges. Bijlmer Museum The cultural-historical designation for the ensemble of buildings in the Bijlmer, of which Kleiburg is a part, and which has been designated as a protected cityscape. CO2 sensor A sensor that measures the concentration of carbon dioxide in the air and is used to control ventilation. Commission for Insulation of the Dutch Industry (CINI) This commission provides a comprehensive handbook with guidelines for the technical insulation of pipes, including applications in complex buildings such as apartment blocks with collective installations. Decibel (dB) A logarithmic unit used to describe the ratio of two values of a physical quantity, such as sound intensity or power. Deed of division The deed of division is a notarial deed that legally divides a building into apartment rights. It defines private and shared parts and the rights and obligations of owners. Demand-controlled ventilation A ventilation system that is automatically controlled based on measured values such as CO2 or humidity. District heating A collective heating supply in which heat is supplied to buildings via a heating network delivered. DO: Final Design The final design stage of a construction project in which all details are worked out and approved for the construction phase. Energy registration Measuring and recording energy consumption to gain insight into use and savings opportunities. Flow rate The amount of liquid or gas flowing through a given point per unit of time, usually expressed in liters per second (l/s) or cubic meters per hour (m³/h). Gigajoule (GJ) A unit of energy equal to one billion joules (10n joules). Greenchoice A Dutch energy supplier focusing on sustainable energy solutions such as green electricity and CO2-compensated gas, our supplier in Kleiburg phase 1 for electricity for the homeowners' association. Heat Fund A national fund that provides loans for energy saving and sustainability measures. Heat measurement Measuring individual or collective heat consumption within a building. Heat network A network of pipes that transports heat from a central source to multiple buildings, our supplier for this heat is Vattenfall. Heat exchanger (our Ferolli's) A device that transfers heat from one liquid to another without the liquids or gases mixing directly. HWA: Rainwater drainage A system for draining rainwater from roofs and other surfaces. HOH: Heart to heart The distance between the center of one structural element and the center of the next element. IRR: Internal Rate of Return (cost benefit analysis) A financial measure used to evaluate the profitability of investments. ISTA A service provider that supplies systems for measuring and monitoring heat and energy consumption. kWh: Kilowatt hour A unit of energy equal to using 1,000 watts for one hour. MJOP: Multi-year Maintenance Plan A plan that describes the maintenance of a building over several years. Outer shell The complex of facades, roofs, floors and frames that separates the building from the outside air. Protected cityscape An area of cultural-historical value where changes to the exterior of buildings are subject to additional regulations and often require a permit. PV panels (Photovoltaic panels) Solar panels that convert sunlight into electricity through photovoltaic cells. Rc value The insulation value used for the construction and is expressed in m²K/W (the higher the better). REGO: Sustainable Transformation and Renovation Initiatives and methods aimed at the sustainable adaptation and renovation of existing buildings. ROI: Return on Investment (payback period) A financial measure that indicates the profitability of an investment. Sealing Sealing seams and cracks in a building to reduce draughts and heat loss. Service costs The periodic contribution that owners pay for maintenance, management and operation of the common areas of the building. SO: Draft design The early phase of the design process in which the basic concepts and layout are developed. Sustainable Commission A working group within the VvE that deals with research, communication and preparation of sustainability proposals. SVVE: Subsidy for Sustainable Homeowners' Associations A national subsidy scheme for homeowners' associations that implement energy-saving measures. The Way The step-by-step process followed in making Kleiburg phase 1 more sustainable, from orientation to decision-making and implementation. TO: Technical Design A detailed elaboration of the design, ready for the construction phase. TRISCO Calculation program for thermal analyses. TVT: Payback period The time it takes to recoup an investment. U-value The insulation value used for glass and frames and is expressed in W/m²K (lower is better). Uniec3 A comprehensive calculation program for energy consumption and energy labels. Upstand At Kleiburg: the vertical concrete edge along the gallery walkways and balconies. VO: Preliminary Design The intermediate phase in the design process in which the design is further developed but not yet finalised. Vattenfall A major European energy company focused on sustainable energy production, our supplier in Kleiburg for district heating. Ventilation type C A ventilation system with natural air supply through grilles and mechanical air extraction. VvE: Owners' Association An organization of apartment owners who are jointly responsible for the management and maintenance of the common areas of a building. Well-being / Well-being test The assessment of building plans based on appearance and integration into the environment, particularly within a protected cityscape. WTW: Heat recovery A system that recovers heat from extracted air and uses it to supply fresh air. to heat. ZR-grid: Self-regulating grid A ventilation grille that automatically adjusts the air flow based on the internal and external pressure. ZEP: Very Energy Efficient Package A form of subsidy for measures that significantly improve the energy efficiency of a building. Are you missing something, do you have questions, ideas or would you like to share your experiences? Email us at duurzaamkleiburg1@gmail.com . Together we'll chart a path toward a future-proof Kleiburg.

Full title: Feasibility study VvE Kleiburg, phase 1 (Dutch version only) Prepared by: Steeds advies BV Process element : Step 1 "Orientation" Certification: SKW 21.9500.002 EPA-W certificate: 63906 Date: 02-04-2025 Do you have any questions, ideas or would you like to share your experiences? Email us at duurzaamkleiburg1@gmail.com . Together we'll chart a path toward a future-proof Kleiburg.

Full title : Analysis / calculation of ventilation WTW for Kleiburg Phase 1 Prepared by : Utrecht University of Applied Sciences, Wilko Planje Description : This document (Dutch only) contains the calculations and exploratory research into the reuse of heat from ventilation air in Kleiburg phase 1. It shows what is possible, but also what questions and risks remain. Do you have any questions, ideas or would you like to share your experiences? Email us at duurzaamkleiburg1@gmail.com . Together we'll chart a path toward a future-proof Kleiburg.

Students from the Utrecht University of Applied Sciences explored a wide range of construction options for a potential application in Kleiburg. Their starting point was a list of considerations proposed by our Sustainability Committee. List of points of attention of the Sustainable Commission (only in Dutch) Full title: List of points of interest, starting points for HU Drawn up by: Sustainable Commission Process component : Step 1 "Orientation" Date: 10-01-2024 Do you have any questions, ideas or would you like to share your experiences? Email us at duurzaamkleiburg1@gmail.com . Together we'll chart a path toward a future-proof Kleiburg.

Report (Dutch only) with advice from full-time students Full title: Advisory report Project VvE Kleiburg VvE Kleiburg Prepared by: Full-time student teams Quest and REGO Process component : Step 1 "Orientation" Date: 21-04-2024 Feasibility study (Dutch only) of part-time students (REGO) Full title: Feasibility study, Sustainable renovation & transformation, Kleiburg Amsterdam Prepared by: Part-time student team REGO Process component : Step 1 "Orientation" Date: 21-06-2024 Technical design (Dutch only) of the part-time students (REGO) Full title: Technical Design, Sustainable renovation & transformation, Kleiburg Amsterdam Prepared by: Part-time student team REGO Process component : Step 1 "Orientation" Date: 21-06-2024 For the document provided by the Sustainable Commission with input that served as a starting point for the student teams, click [ here ] . Do you have any questions, ideas or would you like to share your experiences? Email us at duurzaamkleiburg1@gmail.com . Together we'll chart a path toward a future-proof Kleiburg.

Summary Making a homeowners' association (VvE) more sustainable isn't a sprint, it's a hurdle run. This is evident in the book "De Lange Hordenloop" (The Long Hurdle Race) about VvE Sustainability , which provides practical examples of how they make their buildings future-proof step by step. The Sustainability Committee is pleased to share this book with all residents of Kleiburg Phase 1, as it's relatable and informative for our own approach. You can download it at the bottom of this article (please mind that this issue has only been published in Dutch) . What is the Long Hurdles Run ? The book, commissioned by the Amsterdam Metropolitan Area , tells the story of two homeowners' associations (VvEs) that made their buildings more sustainable. Not through grand promises, but through the real work: building support, making plans, securing financing, and weighing technical options. The title refers to the many obstacles a homeowners' association (VvE) faces along the way – from subsidies and quotes to permit regulations and communication between residents. The message is hopeful: every hurdle can be overcome, as long as the association takes the process step by step and works well together. What can we learn from other homeowners' associations? The book describes the examples of the Anslijn Owners' Association and Buitendok Owners' Association . Both complexes demonstrate that success begins with a clear plan, expert guidance, and plenty of patience. At VvE Anslijn, a single, coherent package of measures was chosen, which was approved in its entirety. At VvE Buitendok they started with four variants, but later they decided to further develop only the most feasible scenarios. This approach – first explore, then narrow down – is exactly what is central to Kleiburg phase 1. Why are we sharing this book? The Long Hurdles Run helps us keep expectations realistic. Making an apartment building more sustainable is a years-long process, during which technology, funding, and support must work hand in hand. By learning from other homeowners' associations, we can avoid mistakes and better assess what's needed to make our building future-proof. 📘 Download the book Frank Steenkamp 2024. The long hurdle race . A lesson in sustainability from two Amsterdam homeowners' associations. Published by VvENET Amsterdam /MRA. ISBN 978-90-9039-303-2. 112 pp. This publication was made possible by: Municipality of Amsterdam, Sustainable Future programme Amsterdam Metropolitan Area GasTerug action network Do you have any questions, ideas or would you like to share your experiences? Email us at duurzaamkleiburg1@gmail.com . Together we'll chart a path toward a future-proof Kleiburg.

Introduction On June 25, 2025, the ALV (General Members' Meeting) of VvE Kleiburg phase 1 took place again. The Sustainability Committee's report was item 8 on the agenda. Due to time constraints and numerous items, we were not addressed. In this blog post, we would like to share two documents (please know they are in Dutch - see the English summary below): Our presentation The report we wrote for this AGM Summary Why make things more sustainable? Making your home more sustainable means more comfortable and saving money. Better insulation and ventilation ensure a pleasant indoor climate, lower energy costs, and potentially a higher energy rating. This way, we contribute not only to our own quality of life but also to a livable world for the future. Where are we now? In 2024, student teams from Utrecht University of Applied Sciences investigated the state of Kleiburg phase 1. Their reports provided insight into the possibilities and challenges. Later, a supplementary feasibility study was conducted by the consultancy Steeds Advies BV, commissioned by the City of Amsterdam. Valuable reports are now available, forming the basis for further steps. What's coming up? The committee is developing a website with summaries, cost-benefit analyses, and implications for the maintenance plan. A survey is also being prepared to gather residents' ideas and opinions. This way, we will work together to develop a concrete plan that will be discussed at the Annual General Meeting. Join in! The committee is looking for reinforcements. Would you like to contribute your thoughts or help? Email duurzaamkleiburg1@gmail.com . Do you have any questions, ideas or would you like to share your experiences? Email us at duurzaamkleiburg1@gmail.com . Together we'll chart a path toward a future-proof Kleiburg.

Summary In Amsterdam-Zuidoost, the Groenhoven residential complex, with 431 apartments, has approved a comprehensive sustainability plan. At the members’ meeting, 81% of those present voted, of whom 94% were in favor. The plan includes new window frames with HR+++ glass, improved insulation, solar panels, connection to the district heating network, and renewal of installations. This will improve living comfort, reduce energy consumption, and prepare the building for the future. It is important that the monumental character of Groenhoven will be preserved. The decision coincides with the 50th anniversary and shows that existing buildings can also be made future-proof. The City of Amsterdam and the national government are providing financial support, ensuring that sustainability remains affordable for residents. Implementation is scheduled for 2026. Download the whole article here: Why we follow this development? Unlike the Kleiburg flat, the Groenhoven flat is located just outside the official Bijlmer Museum area and therefore does not have the status of a protected cityscape. However , it is a municipal monument . The sustainability process is therefore interesting to follow, as the construction period, architecture, and scale are comparable to the flats within the Bijlmer Museum. The experiences with technology, costs, and resident participation at Groenhoven can thus provide valuable lessons for the sustainability of the protected flats. Do you have any questions, ideas or would you like to share your experiences? Although this is an external news article, email us at duurzaamkleiburg1@gmail.com . Together we'll chart a path toward a future-proof Kleiburg.

Source: Municipality of Amsterdam, Heritage of the Week: Kleiburg, from decay to masterpiece (2021). Summary The Kleiburg apartment building in the Bijlmer district was slated for demolition in 2011. Ultimately, the building was saved by a renovation, with the apartments being sold as fixer-uppers. Kleiburg has since received international recognition and is officially part of the municipally protected cityscape. Its story demonstrates how heritage, housing, and innovation can coexist. From modern plan to problems The Bijlmer neighborhood was designed in the 1960s as a modern residential area: tall honeycomb apartment buildings with ample greenery and separate traffic flows. Due to budget cuts, key components were removed from the plan. This resulted in a bare neighborhood with few amenities. Kleiburg, built in 1971, was one of the largest apartment buildings. In practice, the neighborhood proved unpopular. Many residents left after a short time. From 1975 onward, vacant homes were allocated to Surinamese families who came to the Netherlands after independence. Drug problems later emerged. The Bijlmer's image deteriorated, and Kleiburg also fell into disrepair. Nearly demolished After the Bijlmer disaster in 1992, the neighborhood was extensively redeveloped. Many apartment buildings made way for low-rise buildings. Around 2011, Kleiburg was the last remaining original honeycomb block of flats remaining untouched. The building was largely vacant, and demolition seemed the only option. Housing association Rochdale decided to attempt a rescue and issued a tender. New life as a DIY flat Consortium DeFlat acquired Kleiburg and opted for a unique approach: the building's exterior was restored, but the apartments were sold as shells as fixer-uppers. Residents could design their own interiors and, if desired, combine multiple units. The ground floor was also opened up by converting storage spaces into work and living spaces. The result was a resounding success. All the apartments sold quickly. The spray-cleaned concrete restored the apartment buildings to their original appearance and created a peaceful atmosphere in the neighborhood. Recognition and heritage The renovation earned Kleiburg considerable praise. In 2017, the apartment building won the Mies van der Rohe Award , the most prestigious European architecture prize, and the Dutch Design Award Habitat . This was the first time the award went to a renovation project. Since 2019, Kleiburg has been part of the Bijlmer Museum , the area designated as a protected municipal cityscape. This makes the apartment building not only a residential area but also an official heritage site of the city of Amsterdam. Meaning for sustainability Kleiburg's history demonstrates that preservation and renewal can go hand in hand. For the current sustainability challenge, this means a strong focus on the building's heritage value. This can present limitations (for example, in facade modifications or material choices), but also opportunities to maintain or enhance the quality and value of the homes. Download the full article here (note: Dutch version only): Do you have any questions, ideas or would you like to share your experiences? Email us at duurzaamkleiburg1@gmail.com . Together we'll chart a path toward a future-proof Kleiburg.

Summary The dutch documentary Kleiburg, the Last Bijlmer Flat  by filmmaker Jeroen Visser tells the story of the largest DIY apartment block in the Netherlands. From the threat of demolition to international recognition: the film shows how a derided Bijlmer flat was given new life and grew into heritage and an icon. Why is this relevant for Kleiburg phase 1 For the sustainability plans of our homeowners’ association (VvE), the documentary is valuable. It shows that Kleiburg is not just any apartment block, but a monument with a rich history. When making choices about insulation, ventilation, and energy, we must take heritage and architecture into account, alongside comfort and affordability. Explainer Jeroen Visser shows how, upon completion in the late 1960s, the Bijlmer was hailed as the future of public housing. Tens of thousands of Amsterdammers found spacious, light apartments there, like in Kleiburg: 11 storeys high, 400 metres long. The mood soon shifted, however: the district gained a reputation for being unsafe and inhospitable, and many blocks were demolished. Kleiburg seemed headed for the same fate, but got a new chance in the early 2010s. The block was reopened as a DIY renovation project. In the documentary, former residents, architects and new residents speak, supported by unique archival footage. The result is a layered portrait with an unexpectedly positive ending. The film was screened in 2013 at the Netherlands Film Festival (Utrecht) and the Architecture Film Festival Rotterdam (AFFR). Benefits and limitations Benefit:  the film offers a rich picture of Kleiburg ’s social, architectural and cultural value. Limitation:  sustainability is not yet addressed. That challenge is ours today: insulation, airtightness, ventilation and energy generation are essential. Costs and finance The documentary itself does not discuss this, but the history shows that collaboration and creativity open new opportunities. The same applies now to sustainability: by combining subsidies, loans and resident initiative, the HOA (VvE) can take steps. What do we still not know? The film ends with the saving and renovation of the block. How we will also make this heritage energy-efficient in the coming years is the question we now face as VvE phase 1. Sources and links Documentary: Kleiburg, the Last Bijlmer Flat  (Jeroen Visser, 2013). Municipality of Amsterdam: “Kleiburg, from decline to masterpiece.” Architecture awards: Mies van der Rohe Award (2017). Do you have any questions, ideas or would you like to share your experiences? Email us at duurzaamkleiburg1@gmail.com . Together we'll chart a path toward a future-proof Kleiburg.

Dear residents and/or owners of Kleiburg phase 1, Making Kleiburg phase 1 more sustainable is a project that contributes to more living comfort: no more draught or cold thanks to improved insulation and more stable indoor temperatures; lower heating costs and less energy consumption due to better insulation and more efficient ventilation; higher energy label, which increases the value of your home Commissioned by the Sustainable Kleiburg phase 1 committee, 3 student teams of Architecture from Hogeschool Utrecht conducted research into the current state of our building in Kleiburg phase 1 in the first half of this year and investigated the possibilities for making it more sustainable.As a second step, commissioned by the Municipality of Amsterdam and our committee, the consultancy firm Steeds Advies B.V. conducted a feasibility study into the possible sustainability of Kleiburg phase 1. Would you like to know more? Then come to the information evening on Thursday 16 January 2025 from 19:30 to 22:00 in community centre NoLimit, Geldershoofd 80 Steeds Advies BV will then explain the results of its research and answer questions about it. The information is provided in the Dutch language. All residents and owners of Kleiburg phase 1 are welcome! Kind regards,                                        committee Duurzaam Kleiburg phase 1 committee