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--- planning:refurbishment_with_passive_house_components [2025/01/17 10:53] – [EnerPHit: The Passive House Standard for retrofits] jgrovesmith
+++ planning:refurbishment_with_passive_house_components [2025/08/08 13:03] (current) – [How we renovate matters] yaling.hsiao@passiv.de
@@ Line 1: / Line 1: @@
 ====== Refurbishment with Passive House components ======
-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 for significant energy savings in existing buildings.
+<WRAP box TIP> **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>
+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:
+  * [[.:refurbishment_with_passive_house_components:passive_house_refurbishment_-_introduction|]]
+  * 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]
+  * [[:certification:enerphit:enerphit_building_renovation|Highly efficient building renovation as a societal no-regret measure]]
-Context and introductory reading on the topic of refurbishment with Passive House components:
-  * [[certification:enerphit:enerphit_building_renovation|Highly efficient building renovation as a societal no-regret measure]] \\
-  * [[: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]]\\
-  * Brochure: [[https://univention.passiv.de/nextcloud/s/8YjHb5EEqTfNzio|EnerPHit - Renovating with Passive House components]]\\
-  * Research paper: [[https://rdcu.be/cFgCo|Retrofit with Passive House components]] [Bastian et al. 2022]
 ==== 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="400|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").}}]
+Another important advantage of high energy efficiency is that higher surface temperatures inside the building prevent mould growth and thus expensive structural damage. Good thermal insulation not only ensures greater comfort, it also actively protects the building fabric. \\
+{{:picopen:feuchtschaeden_raeume_2018_alterzustand_en_passipedia.jpg?430|}} {{:picopen:feuchteschaeden_raeume_2018_neuer_zustand_en_passipedia.jpg?430|}}
-==== Benefits of deep energy refurbishment ====
-When the focus of refurbishment is expanded to prioritise energy efficiency, we not only reduce energy consumption but also enhance comfort and health benefits while combatting energy poverty - a triple win.
-  * Living comfort significantly improved due to warm walls, floors, and window surfaces
-  * No draughts, condensation, or mould
-  * Improved air quality due to constant supply of fresh air with a pleasant temperature
-  * Reduced operating costs due to lowered energy demand, thus protecting against fluctuating energy prices and alleviating fuel poverty
-  * Significant reduction of operational CO2 emissions due to a lower heating demand
 ==== Five Passive House principles applied to existing buildings ====
-{{:picopen:02_principles_en_2021.jpeg?400 |02_principles_en_2021.jpeg}}
+{{:picopen:02_principles_en_2021.jpeg?400  |02_principles_en_2021.jpeg}}
 \\
-\\
+. Insulation - [[.:refurbishment_with_passive_house_components:thermal_envelope#insulation|Passive House retrofits: Thermal envelope ]]
-. Insulation - [[:planning:refurbishment_with_passive_house_components:thermal_envelope#insulation|Passive House retrofits: Thermal envelope | Insulation]]\\
+. Thermal bridge free design - [[.:refurbishment_with_passive_house_components:thermal_envelope#thermal_bridges|Passive House retrofits: Thermal envelope ]]
-. Thermal bridge free design - [[:planning:refurbishment_with_passive_house_components:thermal_envelope#Thermal bridges|Passive House retrofits: Thermal envelope | Thermal bridges]]\\
+. Airtightness - [[.:refurbishment_with_passive_house_components:thermal_envelope#airtightness|Passive House retrofits: Thermal envelope ]]
-. Airtightness - [[:planning:refurbishment_with_passive_house_components:thermal_envelope#Airtightness|Passive House retrofits: Thermal envelope | Airtightness]]\\
+. Passive House Windows - [[.:refurbishment_with_passive_house_components:thermal_envelope#window_replacement|Passive House retrofit: Thermal envelope ]]
-. Passive House Windows - [[:planning:refurbishment_with_passive_house_components:thermal_envelope#Window replacement|Passive House retrofit: Thermal envelope | Windows]]\\
+. Ventilation with heat recovery - [[.:refurbishment_with_passive_house_components:mechanical_systems#ventilation|Passive House retrofits: Mechanical systems ]]
-. Ventilation with heat recovery - [[:planning:refurbishment_with_passive_house_components:mechanical_systems#ventilation|Passive House retrofits: Mechanical systems | Ventilation]]
-\\
@@ Line 57: / Line 55: @@
 ===== Economic feasibility =====
-[{{ :picopen:unbenannt.png?200|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 with 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.
-  * [[basics:affordability:investing_in_energy_efficiency:economic_feasibility_of_passive_house_retrofits]]
+  * [[:basics:affordability:investing_in_energy_efficiency:economic_feasibility_of_passive_house_retrofits|]]
-  * [[planning:refurbishment_with_passive_house_components:economic_analysis_for_the_retrofit_of_a_detached_single_family_house_to_the_enerphit_standard]]
+  * [[.:refurbishment_with_passive_house_components:economic_analysis_for_the_retrofit_of_a_detached_single_family_house_to_the_enerphit_standard|]]
-  * [[planning:refurbishment_with_passive_house_components:example_of_incentive_programmes_the_kfw_in_germany]]
+  * [[.:refurbishment_with_passive_house_components:example_of_incentive_programmes_the_kfw_in_germany|]]
   * [[https://passivehouse.com/05_service/03_literature/0302_cost-effectiveness/030202_energy-efficiency_sustainable-housing_Mexico.htm|Study of energy efficiency for Sustainable Housing in Mexico]]
+  * [[:policy:eu_taxonomy_regulation|]]
 ===== Performance monitoring =====
-The best proof of concept is always in-use performance monitoring. Positives results of EnerPHit renovations have been demonstrated and documented. Here are some examples and relevant articles:
+The best proof of concept is always in-use performance monitoring. Positive results of EnerPHit renovations have been demonstrated and documented. Here are some examples and relevant articles:
-  * [[operation:operation_and_experience:measurement_results:energy_use_measurement_results#3. Refurbishment with Passive House components|Performance results of retrofit projects]]
+  * [[:operation:operation_and_experience:measurement_results:energy_use_measurement_results#refurbishment_with_passive_house_components|Performance results of retrofit projects]]
   * [[:construction:quality_assurance:nuremberg_case_study|Nuremberg Case Study in detail]]
-  * [[planning:refurbishment_with_passive_house_components:living_quality_monitoring|]]
+  * [[.:refurbishment_with_passive_house_components:living_quality_monitoring|]]
 ----
 ===== Retrofit approaches and selected case studies =====
@@ Line 83: / Line 81: @@
 [{{ :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]]}}]
-Exisiting 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 ====
@@ Line 93: / Line 91: @@
 ==== 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**}}]
@@ Line 125: / Line 123: @@
 ====  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.