1. 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

2. TES ENERGY FACADE

3. Forest Technology Platform Team-Up Award 2009
WoodWisdom-Net Best Project Awards
“Prize for being the project with Best industrial involvement and relevance”
Deutscher Holzbaupreis
kategoriassa “Komponenten / Konzepte”
Schweighofer Innovation Prize
KUVA: Thomas Preiss,

4. 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) p. 6.

5. 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

7. 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

8. 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

9. 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

10. 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)

11. laser scanning
3D modelling

12. image: Aalto University / Wood Construction

13. image: Pöyry Oy / Suomen mallinnusmittaus

14. image: Pöyry Oy / Suomen mallinnusmittaus

15. Image: Kimmo Lylykangas Architects ltd

16. dismantling of the old facade

17. Image: Kimmo Lylykangas Architects ltd

18. Image: Kimmo Lylykangas Architects ltd

20. Image: Kimmo Lylykangas Architects ltd

21. Image: Simon le Roux, Aalto University

22. architectural design

26. Image: Kimmo Lylykangas Architects ltd

27. Image: Kimmo Lylykangas Architects ltd

28. facade elements

29. © Paroc Group
Image: Jukka Sevon, Paroc Oy Ab

30. © Paroc Group
Image: Jukka Sevon, Paroc Oy Ab

31. © Paroc Group
Image: Jukka Sevon, Paroc Oy Ab

32. © Paroc Group
Image: Kimmo Lylykangas Architects ltd

33. Image: Kimmo Lylykangas Architects ltd

34. Image: Kimmo Lylykangas Architects ltd

35. 21/04/2017
© Paroc Group
Image: Jukka Sevón, Paroc Oy Ab

36. Image: Kimmo Lylykangas Architects ltd

37. Image: Simon le Roux, Aalto University

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

39. Images: Simon le Roux, Aalto University

40. Image: Kimmo Lylykangas Architects ltd

41. Image: Jukka Sevón, Paroc Oy Ab

42. Image: Jukka Sevón, Paroc Oy Ab

43. after renovation

44. Image: Jukka Sevón, Paroc Oy Ab

45. Image: Kimmo Lylykangas Architects ltd

46. Image: Kimmo Lylykangas Architects ltd

47. 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

49. 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

50. MORE INFORMATION ON PRE-FAB RETROFITS:
[in Finnish only]
THANK YOU FOR YOUR ATTENTION