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planning:refurbishment_with_passive_house_components [2025/06/30 12:08] – [Retrofit approaches and selected case studies] dvoelpplanning:refurbishment_with_passive_house_components [2025/06/30 15:08] (current) – [Economic feasibility] yaling.hsiao@passiv.de
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 ====== Refurbishment with Passive House components ====== ====== Refurbishment with Passive House components ======
  
-<WRAP box TIP>  +<WRAP box TIP> **Quick and easy retrofit measures** \\ 
-**Quick and easy retrofit measures**\\ +Even small retrofit measures can contribute to energy savings and home improvements. Implemented by professionals or as “Do-It-Yourself” DIY project, such energy efficiency measures are an excellent way to speed up the energy transition. With the **[[:efficiency_now|Efficiency NOW!]]** campaign, the Passive House Institute is providing guidance and detailed instructions for people to make their homes more energy efficient. The information is intended for beginners, for experienced DIY-ers, as well as professionals. </WRAP>
-Even small retrofit measures can contribute to energy savings and home improvements. Implemented by professionals or as “Do-It-Yourself” DIY project, such energy efficiency measures are an excellent way to speed up the energy transition. With the **[[:efficiency_now|Efficiency NOW!]]** campaign, the Passive House Institute are providing guidance and detailed instructions for people to make their homes more energy efficient. The information is intended for beginners, for experienced DIY-ers, as well as professionals. +
-</WRAP> +
  
 Existing buildings account for the greatest share of energy used in buildings - worldwide but especially in industrialised countries. With an estimated 95% of the buildings standing today likely still in use in 2050, deep renovation must be a priority. A great number of these buildings require overall or partial refurbishment or modernisation immediately or in the upcoming decades. Each such occasion is a perfect opportunity to reduce the energy consumption of these buildings by applying appropriate methods. Using components and approaches developed for new Passive House buildings also leads to significant energy savings in existing buildings. Existing buildings account for the greatest share of energy used in buildings - worldwide but especially in industrialised countries. With an estimated 95% of the buildings standing today likely still in use in 2050, deep renovation must be a priority. A great number of these buildings require overall or partial refurbishment or modernisation immediately or in the upcoming decades. Each such occasion is a perfect opportunity to reduce the energy consumption of these buildings by applying appropriate methods. Using components and approaches developed for new Passive House buildings also leads to significant energy savings in existing buildings.
  
-Context and introductory reading on the topic of refurbishment with Passive House components:  +Context and introductory reading on the topic of refurbishment with Passive House components: 
-  * [[:planning:refurbishment_with_passive_house_components:passive_house_refurbishment_-_introduction|Refurbishment with Passive House components - introduction]]\\ + 
-  * Brochure: [[https://univention.passiv.de/nextcloud/s/GjK69ZWDBb9aHNb|Renovation done right - Success stories with the EnerPHit Standard]]\\ +  * [[.:refurbishment_with_passive_house_components:passive_house_refurbishment_-_introduction|]] 
-  * Brochure: [[https://univention.passiv.de/nextcloud/s/8YjHb5EEqTfNzio|EnerPHit - Renovating with Passive House components]]\\+  * Brochure: [[https://univention.passiv.de/nextcloud/s/GjK69ZWDBb9aHNb|Renovation done right - Success stories with the EnerPHit Standard]] 
 +  * Brochure: [[https://univention.passiv.de/nextcloud/s/8YjHb5EEqTfNzio|EnerPHit - Renovating with Passive House components]]
   * Peer-reviewed article: [[https://rdcu.be/cFgCo|Retrofit with Passive House components]] [Bastian et al. 2022]   * Peer-reviewed article: [[https://rdcu.be/cFgCo|Retrofit with Passive House components]] [Bastian et al. 2022]
-  * [[certification:enerphit:enerphit_building_renovation|Highly efficient building renovation as a societal no-regret measure]] \\+  * [[:certification:enerphit:enerphit_building_renovation|Highly efficient building renovation as a societal no-regret measure]] 
  
 ==== How we renovate matters ==== ==== How we renovate matters ====
-Poor quality reburfishments can result in lock-in effects with suboptimal improvements typically left untouched for decades, if not generations. We simply cannot afford the resulting missed opportunities for energy savings and emissions reductions. Truly high performance refurbishment with a fabric first approach has the power to substanitally mitigate climate impacts while providing manifold other benefits (as outlined below). On a societal level, high-performance renovations will also dampen peak loads on our energy grids, boost our energy independence and facilitate out transition to a renewables-based energy supply, thus further contributing to our climate goals. +Poor quality refurbishments can result in lock-in effects with suboptimal improvements typically left untouched for decades, if not generations. We simply cannot afford the resulting missed opportunities for energy savings and emissions reductions. Truly high performance refurbishment with a fabric first approach has the power to substanitally mitigate climate impacts while providing manifold other benefits (as outlined below). On a societal level, high-performance renovations will also dampen peak loads on our energy grids, boost our energy independence and facilitate out transition to a renewables-based energy supply, thus further contributing to our climate goals. 
  
-[{{:picopen:lock_in.png?width="500"height="500 |Comparison of a building's energy demand following either shallow retrofit (dark green) or deep retrofit measures at every reburbishment step. Choosing mediocre efficiency levels will lock in the long-term energy performance of the building, the so-called "lock-in effect").}}]+[{{:picopen:lock_in.png?width="500"height="500 |Comparison of a building's energy demand following either shallow retrofit (dark green) or deep retrofit measures at every refurbishment step. Choosing mediocre efficiency levels will lock in the long-term energy performance of the building, the so-called "lock-in effect").}}]
  
 ==== Benefits of deep energy refurbishment ==== ==== Benefits of deep energy refurbishment ====
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 ===== Economic feasibility ===== ===== Economic feasibility =====
  
-[{{ :picopen:outphit_giessen.png?400|The refurbishment of this multifamily building in Giessen, Germany achieved measured heating savings of more than 70 %. This success story confirms the potential of energyefficient refurbishment of existing buildings}}]+[{{ :picopen:outphit_giessen.png?400|The refurbishment of this multifamily building in Giessen, Germany achieved measured heating savings of more than 70 %. This success story confirms the potential of energy-efficient refurbishment of existing buildings}}]
  
 For achieving cost efficiency, it is crucial to couple the energy-saving measures with renovation measures that would have been necessary in any case. For example, if the facade needs to be renovated anyway, then the additional expenditure for simultaneous thermal insulation to the Passive House Standard will remain manageable. Nowadays, it is possible to carry out better measures at low differential costs, later installation would require the same effort once again for scaffolding, installing, protection from weather, etc. That is why, from the very beginning, great attention must be paid to a high quality of the thermal and energy-relevant aspects of each procedure. For achieving cost efficiency, it is crucial to couple the energy-saving measures with renovation measures that would have been necessary in any case. For example, if the facade needs to be renovated anyway, then the additional expenditure for simultaneous thermal insulation to the Passive House Standard will remain manageable. Nowadays, it is possible to carry out better measures at low differential costs, later installation would require the same effort once again for scaffolding, installing, protection from weather, etc. That is why, from the very beginning, great attention must be paid to a high quality of the thermal and energy-relevant aspects of each procedure.
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 ===== Retrofit approaches and selected case studies ===== ===== Retrofit approaches and selected case studies =====
  
-[{{ :picopen:foto_2_v2-1.jpg?250|**Example of a whole building retrofit**: The Cartagena residential building is located in Madrid, Spain. A traditional approach without prefabrication was taken and tenants moved out the building before construction.\\ +[{{ :picopen:foto_2_v2-1.jpg?250|**Example of a whole building retrofit**: The Cartagena residential building is located in Madrid, Spain. A traditional approach without prefabrication was taken and tenants moved out the building before construction. \\ Read more about the project: [[https://passivehouse-database.org/index.php?lang=en#d_6898|ID 6898]]}}]
-Read more about the project: [[https://passivehouse-database.org/index.php}}] +
- +
-Existing projects typically have quite individual challenges - both technically, as well as from practical, social or cost perspectives. It is important to assess and understand the specific project and context and then apply the most suitable retrofit approach without compromising on quality. The EnerPHit Standard deliberately does //not// prescribe a specific method or technology, which allows flexibility to chose an approach best suited to the individual context.+
  
 +Existing projects typically have quite individual challenges - both technically, as well as from practical, social or cost perspectives. It is important to assess and understand the specific project and context and then apply the most suitable retrofit approach without compromising on quality. The EnerPHit Standard deliberately does //not// prescribe a specific method or technology, which allows flexibility to choose an approach best suited to the individual context. 
  
 ====  Whole building complete retrofit ==== ====  Whole building complete retrofit ====
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 ==== Step-by-step retrofit ==== ==== Step-by-step retrofit ====
  
-Renovating in a step-by-step manner allows for incremental improvement to a building's energy performances, spreading costs and effort over time. This is also referrred to as phased or staged retrofit. The EnerPHit Retrofit Plan (ERP), based on PHPP, provides a valuable tool to plan and coordinate different retrofit steps. Read more about the ERP [[https://passivehouse.com/03_certification/02_certification_buildings/06_process/06_process.html|here]]. Such a phased approach is particulary useful when budget constraints or practical considerations make a full renovation executed all at once unfeasible. By planning each step to align with long-term energy efficiency goals such as those set by the EnerPHit standard, building owners can gradually reduce energy consumption, improve comfort, and avoid suboptimal interim solutions that would lead to energy lock-in. +Renovating in a step-by-step manner allows for incremental improvement to a building's energy performances, spreading costs and effort over time. This is also referrred to as phased or staged retrofit. The EnerPHit Retrofit Plan (ERP), based on PHPP, provides a valuable tool to plan and coordinate different retrofit steps. Read more about the ERP [[https://passivehouse.com/03_certification/02_certification_buildings/06_process/06_process.html|here]]. Such a phased approach is particularly useful when budget constraints or practical considerations make a full renovation executed all at once unfeasible. By planning each step to align with long-term energy efficiency goals such as those set by the EnerPHit standard, building owners can gradually reduce energy consumption, improve comfort, and avoid suboptimal interim solutions that would lead to energy lock-in. 
  
-Detailed brochure: [[https://europhit.eu/sites/europhit.eu/files/EuroPHit_Handbook_final_Optimized.pdf|Step by Step Retrofit with Passive House Component]]+Detailed brochure: [[https://europhit.eu/sites/europhit.eu/files/EuroPHit_Handbook_final_Optimized.pdf|Step by Step Retrofit with Passive House Components]]
  
 [{{ :picopen:step-by-step_certification_scheme_for_enerphit_retrofits.png?400|**Concept of step-by-step retrofit to EnerPHit**}}] [{{ :picopen:step-by-step_certification_scheme_for_enerphit_retrofits.png?400|**Concept of step-by-step retrofit to EnerPHit**}}]
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 ====  Quick and easy retrofit measures ==== ====  Quick and easy retrofit measures ====
-Even small retrofit measures can contribute to energy savings and home improvements. Implemented by professionals or as "Do-It-Yourself" DIY project, such small energy efficiency measures are an excellent way to speed up the energy transition. With the **[[:efficiency_now|Efficiency NOW!]]** campaign, the Passive House Institute are providing guidance and detailed instructions for people to make their homes more energy efficient. The information is intended for beginners, for experienced DIY-ers, as well as professionals. +Even small retrofit measures can contribute to energy savings and home improvements. Implemented by professionals or as "Do-It-Yourself" DIY project, such small energy efficiency measures are an excellent way to speed up the energy transition. With the **[[:efficiency_now|Efficiency NOW!]]** campaign, the Passive House Institute is providing guidance and detailed instructions for people to make their homes more energy efficient. The information is intended for beginners, for experienced DIY-ers, as well as professionals. 
  
  
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