TES METHOD LIMITING INVASIVENESS DURING THE RETROFIT PROCESS Kimmo Lylykangas Kimmo Lylykangas Architects ltd Renewing the City: Retrofits & Brownfield Development Stockholm May the 8th 2013

TES ENERGY FACADE

Forest Technology Platform Team-Up Award 2009 WoodWisdom-Net Best Project Awards 2011 “Prize for being the project with Best industrial involvement and relevance” Deutscher Holzbaupreis 2011 kategoriassa “Komponenten / Konzepte” Schweighofer Innovation Prize 2011 www.schweighofer-prize.org KUVA: Thomas Preiss, http://www.apa-fotoservice.at/

CARBON INVESTMENT COMPARISON CUMULATIVE CO2-eqv CALCULATION BY JUNNILA ET AL. RENOVATION, LOW ENERGY (50 kWh/m²a SPACE HEATING) NEW CONSTRUCTION, PASSIVE HOUSE (15 kWh/m²a SPACE HEATING) NEW CONSTRUCTION, AVERAGE BUILDING STOCK, AVERAGE NEW CONSTRUCTION, LOW ENERGY (50 kWh/m²a SPACE HEATING) SOURCE: Säynäjoki, Antti; Heinonen, Jukka & Junnila, Seppo: A Scenario analysis of the life cycle greenhouse gas emissions of a new residential area. Environ. Res. Lett. 7 (2012) 030437 p. 6.

PASSIVE HOUSE RETROFIT Saturnuksenkatu 2 KOTIKULMA OY, BUILDING 10 A 4-storey residential building, first constructed in 1975 37 rental apartments and a day-care center ”Saturnus” A relatively typical 1970’s multi-storey apartment building in Finland load-bearing concrete element frame, exterior walls constructed of sandwich elements the facades need to be renovated for technical reasons Located in Peltosaari area, town of Riihimäki An area with multiple socio-economic problems typical to sub-urban areas in Finland

PASSIVE HOUSE RETROFIT Saturnuksenkatu 2 FACADE RENOVATION Additional thermal insulation New doors and windows New entrance canopies New balconies New facade materials NEW ROOF New technical space and the assembly space for ventilation ducts in the attic NEW VENTILATION SYSTEM Centralized mechanical ventilation system with effective heat recovery [regerative heat exchanger] New spaces for ventilation units in the attic and in a former storage-room on the 4th storey

PASSIVE HOUSE RETROFIT Saturnuksenkatu 2 MEETING THE PASSIVE HOUSE REQUIREMENTS Heating energy demand ≤ 25 kWh/m²a Reduction approximately 75 % → Savings in maintenance costs → Improved thermal comfort and indoor air quality Measures taken Additional thermal insulation (excluding floors) New doors and windows Air-tightness New mechanical ventilation system with efficient heat recovery

PASSIVE HOUSE RETROFIT Saturnuksenkatu 2 BEFORE AFTER FLOOR W/(m²K) 0,46 WALL load bearing 0,27 0,1 WALL not load bearing 0,25 BALCONY DOORS 1,8 0,8 ROOF 0,22 0,08 WINDOWS 2,9 0,66 HEAT RECOVERY ventilation % - 75

PASSIVE HOUSE RETROFIT Saturnuksenkatu 2 RENOVATION WITH PRE-FAB FACADE ELEMENTS Part of the work can be carried out in the element factory instead of the building site → Less disturbance for the tenants → Shorter duration of the on-site construction work possible The pre-fabrication included In-take air ducts, integrated in the wall elements Doors and windows Facade material (first layer of plaster rendering)

laser scanning 3D modelling

image: Aalto University / Wood Construction

image: Pöyry Oy / Suomen mallinnusmittaus

image: Pöyry Oy / Suomen mallinnusmittaus

Image: Kimmo Lylykangas Architects ltd

dismantling of the old facade

Image: Kimmo Lylykangas Architects ltd

Image: Kimmo Lylykangas Architects ltd

Image: Kimmo Lylykangas Architects ltd

Image: Simon le Roux, Aalto University

architectural design

Image: Kimmo Lylykangas Architects ltd

Image: Kimmo Lylykangas Architects ltd

facade elements

© Paroc Group Image: Jukka Sevon, Paroc Oy Ab

© Paroc Group Image: Jukka Sevon, Paroc Oy Ab

© Paroc Group Image: Jukka Sevon, Paroc Oy Ab

© Paroc Group Image: Kimmo Lylykangas Architects ltd

Image: Kimmo Lylykangas Architects ltd

Image: Kimmo Lylykangas Architects ltd

21/04/2017 © Paroc Group Image: Jukka Sevón, Paroc Oy Ab

Image: Kimmo Lylykangas Architects ltd

Image: Simon le Roux, Aalto University

Roof elements on-site assembly Riihimäki Innova project photos: Simon le Roux 28.9.2011 Image: Simon le Roux, Aalto University

Images: Simon le Roux, Aalto University

Image: Kimmo Lylykangas Architects ltd

Image: Jukka Sevón, Paroc Oy Ab

Image: Jukka Sevón, Paroc Oy Ab

after renovation

Image: Jukka Sevón, Paroc Oy Ab

Image: Kimmo Lylykangas Architects ltd

Image: Kimmo Lylykangas Architects ltd

PILOT PROJECT EXPERIENCES Laser scanning and high precision in element manufacturing enable pre-fabrication in retrofitting Vertical elementation and thick insulation layers enable the integration of ventilation ducts (in-take air ductwork) in facade elements Pre-fabrication can make the duration of the on-site construction work shorter and reduce both the costs and the disturbance for tenants We were expecting problems in... precision and element installation ductwork integration and joints The problems were met in... moisture control building site arrangements ensuring the safety and the comfort of the tenants

HOW TO DEVELOP THE PROCESS Better coordination and pacing of three work phases: dismantling straightening of surfaces element installation Minimizing the on-site work and avoiding the need for storaging of materials Creating guidelines for ”living in the building site” , for example moisture control maximum noise level impurities in the ventilation system during the construction work tenant safety during the construction work Ensuring good indoor air quality and thermal comfort during every phase of the retrofit Separation of the areas for construction work and for tenants

MORE INFORMATION ON PRE-FAB RETROFITS: www.paroc.fi/kampanjat/innova-projekti [in Finnish only] www.tesenergyfacade.com www.e2rebuild.eu www.ecbcs.org/annexes/annex50 www.empa-ren.ch/A50 THANK YOU FOR YOUR ATTENTION kimmo.lylykangas@arklylykangas.com