Deep Retrofit: Deep Retrofits across Europe,Passive House Institute

Deep Retrofits across Europe, how it can be achieved in a stepwise process, SEAI's Deep Retrofit conference, June 21st 2017

1. Deep retrofits across Europe and how it can be achieved even in a stepwise process Jan Steiger / Passive House Institute

2. EnerPHit Standard: Quality assurance for retrofit of existing buildings Guideline and incentive for an optimal efficiency standard Quality assurance for building owners Market transparency “ Ener gy Retro fit with P assive H ouse Components” Introduction: EnerPHit

3. Component Limit value Opaque exterior components Exterior insulation: f T * U ≤ 0.15 W/(m²K) Interior insulation: f t   *  U ≤ 0.35 W/(m²K) Opaque exterior components to ground and unheated basement f * U ≤ 0.15 W/(m²K) where f: “ground reduction factor” from PHPP “Ground” worksheet Windows U w,installed  ≤ 0.85 W/(m²K) g  ·  1.6 W/(m²K) ≥ U g Ventilation system h heat recovery,eff  ≥ 75 % (incl. duct losses) Airtightness limit value: n 50  ≤ 1.0 h -1 target value: n 50 ≤ 0.6 h -1 1) Based on component criteria for Certified Passive House Components 2) Heating demand below 25 kWh/(m²a) EnerPHit certification criteria: 2 ways

4. International EnerPHit criteria or alternatively , energy demand method : building component method : © Passive House Institute

5. The EnerPHit Classes: Efficiency first! Classic PH components and high energy efficiency (PER ) + RES Plus Premium Basic requirement: Low heating / cooling demand © Passive House Institute

6. The new EnerPHit classes 60+x Classic total PER- demand [kWh/(m² TFA a)] 45+x Plus 30+x 60 Renewable energy generation [kWh/( m² ground a )] 120 Premium © Passive House Institute

7. First EnerPHit plus building Residential and Business building in 2016 Papagou (Griechenland) Architekt: Athanasia Roditi Consultancy : Stefanos Pallantzas

8. Building stock EnerPHit NZEB motivation disturbance of inhabitants life cycle of existing components financing competence Complete retrofit There will be challenges: Deep Retrofit all at once – we know it works!

9. According to the Bundesinstitut für Bau-, Stadt- und Raumforschung (BBSR ), in 2014 in Germany 70% of all investments into refurbishments Of these 85% were retrofit measures only So: very few complete retrofits!

10. Building stock step by 7 workpackages 14 partners 10 pilot projects step 11 countries 36 months Retrofit EnerPHit + RES Euro PHit How can we do it stepwise? from 01 Apr 2013 to 31 Mar 2016

11. Step-by-step retrofits: M oderate or deep retrofit measures? Locked in EnerPHit NOW: start properly to… …achieve high efficiency in 2050

12. Single family homes CS12 Single Family Home Stockholm / SE Basement floor insulation Roof insulation Windows 70.000 € OP 17 Single Family Home Zellingen / DE External walls Roof insulation Basement ceiling 95.000 € CS16 Single Family Home Santander / ES Roof insulation 7.000 € OP21 Single Family Home Wicklow Town / IE Roof insulation North facade Ventilation 95.000 €

13. Multifamily buildings CS05 Multifamily Social Housing Courcelles / FR windows Improvement of airtightness 480.000 € CS14 Multifamily House Portsmouth / UK Roof insulations Wall insulation Windows Ventilation 16.000.000 € OP25 Stjärnhus Stacken Gothenburg / SE Wall insulation Windows PV façade PV roof 660.000 € OP23 Treviana Social Housing Madrid / ES 1 flat retrofitted Internal insulation 13.000 €

14. 1. Components step-by-step Define a step-by-step retrofit: 2. Facades / units / parts / whole sections step-by-step

15. Provide for building extensions Additional storey Include balconies additional building section Include basement

16. Provide for sequential retrofitting of building parts / sections One flat first One block first Sides first

17. Certification criteria and scheme

18. Energy balance calculation tool and overall retrofit plan ExistingBuilding Retrofit Measure 1 Retrofit Measure 2 Completion as EnerPHit Heating Demand [kWh/m² ]

19. Overall refurbishment plans

20. EnerPHit Retrofit Plan as output of PHPP 20

21. Defining packages of retrofit measures 21

22. Description and advice for all components 22

23. Overview of all measures and costs 23

24. Case studies 20 projects – 11 completed Total of TFA to be retrofitted : 40.000 m² Budget for 1st steps started in EuroPHit : 26 Mio €

25. EuroPHit Case Study Projects Step-by-step Improvement

26. RES Potentials and Efficiency improvements Total PV Potential calculated for the 20 pilot projects: Roofs: 60.000 kWh/(m²a) Facades: 16.000 kWh/(m²a) Total: 76.000 kWh/(m²a) PV Potential: 19 kWh/(m²a) Efficiency improvements calculated for 20 pilot projects: Existing buildings: 182 kWh/(m²a) Within EuroPHit: 79 kWh/(m²a) Future EnerPHit: 18 kWh /(m²a ) Savings Potential: 164 kWh/(m²a)

27. First projects : IN28, Innsbruck, Austria multi- family house , 84 units by „Neue Heimat Tirol“ 1958: Year of construction : 1993: First retrofit moderate insulation on facade , roof , basement ceiling 2016: added insulation to EnerPHit level , PH windows (60%), HRV (31%) Tenant change : Remaining measures extensive communication with tenants

28. First projects : Multi- family building in Vienna, Austria

29. First projects : Multi- family building in Taiwan

30. Financing step-by-step retrofits: Quality assurance measures Completed deep retrofit Measure 1 Measure 2 Measure 3 Building refurbishment Existing Building High energy demand Highest influence of overall refurbishment concept on the efficiency improvement of the building Consultation and convincement most important Low energy demand Detection of results only First measures need to be set correctly Decreasing influence on efficiency outcomes of the retrofit process

31. Financial workshops

32. Explain funding for Costs for planning + QA

33. Product Development Insulation edges Drain water heat recovery Attic stairs Airtight EIFS

34. Component Award 2015: Windows for step-by-step retrofits

35. More information Free online handbook , 120 pages www.europhit.eu PHI building criteria

36. Boosting construction practices through a new set of technologies www.built2spec-project.eu This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 637221. This publication reflects the views only of the author, and the Commission cannot be held responsible for any use which may be made of the information contained therein. © OHL Objective: Reduce the energy performance gap between a building’s designed and as-built energy performance Self-Inspection, 3D Modelling, Management and Quality-Check Tools for the Construction Worksite More project activities coming up

37. This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 637221. This publication reflects the views only of the author, and the Commission cannot be held responsible for any use which may be made of the information contained therein. © OHL Instruction : Sealing to attic hatch Use Refurbify as basis for a new platform for quality assurance

38. This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 637221. This publication reflects the views only of the author, and the Commission cannot be held responsible for any use which may be made of the information contained therein. © OHL Keep the energy balance calculation Updated by importing data from BIM

39. Thank you for your attention www.europhit.eu The sole responsibility for the content of this presentation lies with the authors. It does not necessarily reflect the opinion of the European Union. Neither the EACI nor the European Commission are responsible for any use that may be made of the information contained therein.