ZERO! research. Research into energy efficienct refurbishment strategies and urban infill in post-war housing in Finland

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1 ZERO! research Research into energy efficienct refurbishment strategies and urban infill in post-war housing in Finland

2 Asuinkerrostaloissa olevien asuntojen lukumäärän jakautuminen rakennuksen rakennusvuoden mukaan. (Lähde: Tilastokeskus) Suomen asuntokanta

3 Population development in independent Finland - greying Baby Boomers Finnish age structure of population in 1917 and 2006 Source:

4 Shrinking demand for new housing production in Finland Image: Factors affecting the amount of new housing construction in 2030 Terttu Vainio, Kaisa Belloni & Liisa Jaakkonen. Espoo VTT

5 Challenges for sustainable refurbishment and urban redevelopment in Europe are based on: the demand for renovation of existing building stock the demand for increased energy efficiency of all buildings the demand on limiting urban sprawl the demand for social sustainability TES Renovation GWG Münich, Germany.

6 Riihimäki Oulu Munich /02/2016

7 Re-Skin Passive house refurbishment E2ReBuild & TES rowhouse example from Netherlands

8 TES Timber based Element System TES EnergyFaçade ( ) prefabricated timber based building system for improving the energy efficiency of the building envelope smarttes ( ) Innovation in timber construction for the modernisation of the building envelope Germany Technische Universität München Hochschule Rosenheim B&O Wohnungswirtschaft Gumpp & Maier GmbH Ambros GmbH Funding: BMBF Finland Aalto University Finnish Real Estate Federation Finnish Wood Research Oy Metsä Wood Puuinfo Oy PAK RAK Oy Funding: TEKES Norway SINTEF NTNU Norwegian University of Science and Technology Funding: The Research Council of Norway

9 TES Energy Façade TES EnergyFaçade manual (2011) tesenergyfacade.com/downloads/tes_manual-ebookfinal.pdf

10 TES process Material life cycles Facade systems

11 TES prefabrication (Innova project) Multifuctional systems Better working conditions Added value of skilled labour

12 Finlands first TES refurbishment PAROC Innova project, Riihimäki

13 Finlands first TES refurbishment PAROC Innova project, Riihimäki

14 Industrialised energy efficient retrofitting of residential buildings in cold climates Oulu Demonstration of Energy Efficiency through Retrofitting of Buildings Coordinator: NCC AB, Sweden Halmstad London Roosendaal Augsburg Munich Voiron

15 after: option A after: option B before

16 before after Architecture and ideology: the loss of history?

17 Virkakatu 5 AB, Oulu E2ReBuild Saturnuksenkatu 2, Riihimäki smarttes Fredrik Selmers vei 4 Oslo photo: Tove Lauluten Facade choice design for de-construction Kastelli community centre, Oulu Cembrit Badgasteiner Straße 2, Munich, E2ReBuild

18 Virkakatu 5 AB, Oulu E2ReBuild Thamesmead, London E2ReBuild Facade choice durability Grüntenstraße, Augsburg, E2ReBuild, Frank Lattke Kroeven, Roosendaal E2ReBuild Badgasteiner Straße 2, Munich, E2ReBuild Forum Holzbau Nordic 14, Simon le Roux,

19 TES facade Fredrik Selmers vei 4 Oslo system scale and replication

20 8. Completion of facade, new balconies 7. Facade elements mounted 6. TYVEK- air tight layer 5. Soft adaption layer 4. Old thermal insulation and roof demolished 3. Outer layer of concrete demolished 2. Balconies demolished 1. Building before retrofit Process concepts

21 Digital measurements Process concepts

22 3d laser scanner Digital workflow

23 Digital process + prefabrication Process concepts

24 Robotic future Riihimäki Innova project photo: Simon le Roux

25 Extend Ida Lautanala, Aalto-yliopisto Lähellä kaupunkia Lisä- ja täydennysrakentamissuunnitelma Kouvolan Kaunisnurmeen Diplomityö Building typology limits potential solutions

26 Ida Lautanala, Aalto-yliopisto Lähellä kaupunkia Lisä- ja täydennysrakentamissuunnitelma Kouvolan Kaunisnurmeen Diplomityö Student works in urban regeneration (KLIKK)

27 New balcony structures? Self-load-bearing Steel/concrete/timber or combination KLIKK / Juhani Alasalmi & Joonas Koskela

28 Changing needs of different age groups like prosthetics for a disabled city? Senior citizens under-represented in design processes Urgent needs to meet requirements for accessibility - e.g. lifts to be retrofitted, facilities for assisted living and street furniture. Need for diversified housing types and improved standard of life. Research and local industry are developing new timber construction in a predominantly concrete and red-brick built environment. Image source: Veli-Pekka Ranta, KLIKK Master s thesis, Oulu University, 2013

29 Lift retrofits locations and systems?

30 Urban infill challenges: Joensuu pilot project: Kirkkokatu 18 KLIKK / Petri Pettersson

31 Additional floors vs. Fire regulations LEIKKAUS KAKSI LISÄKERROSTA REI M- 120 KLIKK / Petri Pettersson

32 KLIKK / Petri Pettersson Rauti-huus, Zurich (2015)

33 Infill Veli-Pekka Ranta, Oulun Yliopisto Uudistuva lähiö Porvoon Kevätkummun lisä- ja täydennysrakentamis-suunnitelma Diplomityö

34 Veli-Pekka Ranta, Oulun Yliopisto Uudistuva lähiö Porvoon Kevätkummun lisä- ja täydennysrakentamis-suunnitelma Diplomityö Yrsa Cronhjort

35 Joensuu KORTTELI 41. Parking? Site boundaries? Before KLIKK / Toni Pallari Korttelitehokkuus 0,65 After? Lisärakentaminen 7602m² Korttelitehokkuus 1,49 > 76 autopaikkaa Lisärakentaminen 5900m² Korttelitehokkuus 1,36 > 59 autopaikkaa Lisärakentaminen 11070m² Korttelitehokkuus 1,85 > 110 autopaikkaa

36 Participation in design process: mapping social transformation Combining Geographical Information System (GIS) and Building Information Modelling (BIM) Background analysis: Neighbourhood SWOT GIS responses: positive / negative / ideas Synthesis: extend / infill / conserve / connect Visualize proposals for feedback

37 Public priorities change, and need to be clarified and (re)defined: Positive response to proposals for urban infill and refurbishment It is possible to infill housing and increase density by enhancing the quality of urban environment Infill proposal including mixed and small-scale housing typology in a modern village with intimate landscaped courtyards to diversify the supply of apartments Image source: Leeni Harno, KLIKK Master s thesis, Aalto University, 2013

38 A need for a new hierarchy in public spaces and intimate landscapes Residents wish for a clear identity for their built environment: pleasant courtyards, maintenance of green spaces. Public space and urban infrastructures in the neighbourhood are being loosely defined: Designers proposed a hierarchy and specific themes to enhance green spaces, and a new urban park adjacent to a rundown shopping centre. Image source: Leeni Harno KLIKK Master s thesis, Aalto University, 2013

39 Practical experience from research and pilot projects in refurbishment Lightweight, durable, life cycle facades possible Demolition work require care and occupational safety Detailed design, measurement and survey essential Airtightness critical : windows, penetrations, foundations Energy targets demand investment social motivation critical Need to monitor energy use and building service systems Cost effective competition in prefabrication is growing Contractors are interested in extensive retrofits

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