Sustainable building retrofits in Finland Yrsa Cronhjort yrsa.cronhjort@aalto.fi + 358 50 5660802 Image Keijo Rasmus, NCC
The Challenge 40-50% OF HEATING ENERGY DEMAND 36% OF GREENHOUSE GAS EMISSIONS ENERGY EFFICIENCY REFURBISHMENT OF FACADES, BUILDING SERVICES POST II WORLD WAR SUBURBS FINLAND: EVERY 5TH APARTMENT 63% OWNER OCCUPIED
SOLUTION PREFABRICATION PROCESS THINKING INDUSTRIALIZATION
Tes Energy Facade Facade retrofit with prefabricated timber based elements PREFABRICATED FACADE ELEMENTS IMPROVED ENERGY EFFICIENCY DECREASED CARBONDIOXIDE EMISSIONS OF OUR BUILT ENVIRONMENT A CHANGE FROM SITE INTENSIVE WORK TO A MORE CONTROLLED ENVIRONMENT Faster retrofit process More reliable pricing Quality Capacity Safer working environment Less disturbance of living
TES manual pp 01_12 AUGSBURG lattkearchitekten ARGE Gumpp & Maier / Mayer Slide by Frank Lattke
TES manual pp 03_62
AUGSBURG lattkearchitekten ARGE Gumpp & Maier / Mayer
Image Frank Lattke ARGE Gumpp & Maier / Mayer
AUGSBURG lattkearchitekten ARGE Gumpp & Maier / Mayer
AUGSBURG lattkearchitekten ARGE Gumpp & Maier / Mayer
TES ELEMENTS IMAGE 1 TES ELEMENT EXAMPLE (ACCORDING TO FINNISH REGULATIONS) soft glass wool carpet glued to board, softwood plywood or OSB board 9mm, airtight paper strengthened with mesh web girders + thermal insulation (amount according to need, here 300 mm), wind barrier gypsum board 9mm, air gap, facade cladding
TES manual pp 04_117 Image Frank Lattke http://www.tesenergyfacade.com/
Digital workflow and prefabrication Complete regeneration of the building appearance Significantly improved energy efficiency Improved comfort for end-user Independent, self-load bearing building facade > opportunity for adding value to the facade Image Yrsa Cronhjort
the functionality of both apartments and the building can be improved new outdoor space, semicold space or heated space new external walls balconies can be thermally insulated and integrated to interior spaces heated or semicold living area can be increased even up to 20% (example below) In case a three storey building has a ground floor that could be redeveloped, the maximum new floor area would be about 25% Frank Lattke
Image Leeni Harno Harno, L., Elävä lähiö houkutteleva asuinympäristö Asukas- ja käyttäjälähtöinen lähiöuudistussuunnitelma Kouvolan Kaunisnurmeen, Master thesis, Aalto University School of Arts, Design and Architecture, Department of Architecture, 2013.
13 master theses tutored and analysed Potential for infill even up to 80% Increased efficiency rates 40-100% Majority 3-story apartment buildings, typically added to with 1-2 floors (11/13) Lean process through the use of prefabricated modules Limits: circulation systems, parking space Environmental benefit: No new net land use or take Tomi Tulamo
Case Saturnuksenkatu Riihimäki Image Simon le Roux, Aalto
CONCRETE SANDWICH FACADE ELEMENTS 1970 S 80 mm concrete 90 mm thermal insulation 40 mm concrete U=0.53 W/m 2 K
Image: Kimmo Lylykangas
Images Kimmo Lylykangas TES elements in production INNOVA pilot project Riihimäki, Finland http://parocfi.virtual35.nebula.fi/innova/
Image Simon Le Roux, Aalto
Image Simon le Roux, Aalto.
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
IMAGE KIMMO LYLYKANGAS Images Kimmo Lylykangas
Image Tomi Tulamo
Case Virkakatu Oulu
Image Arkkitehdit M3 Oy.
Image Simon le Roux, Aalto. 31
Image Simon le Roux, Aalto.
Retrofit facade: TES (Oulu) U=0.11 30cm
Pohjois-Suomen opiskelija-asuntosäätiö, NCC Rakennus Oy, Arkkitehdit M3 Oy, Insinööritoimisto Putkonen Oy, Taltekon Oy, Oulun Sähkö-Aika Oy, Fidelix Oy, Suomen Rakennustuote Oy, Aalto University Jaakko Kallio-Koski M3 Architects
YRSA CRONHJORT yrsa.cronhjort@aalto.fi +358 50 5660802 http://forum-woodnordic.com/