| Your name | Your building company | Your builder's name | Your architecture firm | Your architect's name | Passive building consultant | State or province | Original construction year | Year when passive building work was or will be completed | Lot type | Type of structure | Building use type | Brief description of the retrofit project | Scope of retrofit | Why did you choose to do a whole, partial, or phased retrofit? | Total area of the structure (in square feet) | Total renovated area of the retrofit project (in square feet) | Date when the project began or is expected to begin (enter "01" for the day if you only know the month and year) | How many months did the renovation take? If ongoing, how many months is the renovation expected to take? | What were the main goals of the retrofit? Were these goals driven by you, a client or both? | Were people living in the building during renovation? | Was this a registered historic building? | Did you use historic tax credits? | Passive house certified? | If certified by another group, please list the organization: | Air tightness (ACH) before renovation | Air tightness (ACH) after renovation | Total annual electricity costs before renovation (in dollars) | Total annual electricity costs after renovation (in dollars) | Total annual electricity usage before renovation (in kWh) | Total annual electricity usage after renovation (in kWh) | Total annual heat costs before renovation (in dollars) | Total annual heat costs after renovation (in dollars) | Total annual heat usage before renovation (in kBtu) | Total annual heat usage after renovation (in kBtu) | Heat source(s) before renovation | Heat source(s) after renovation | Annual hot water cost before renovation (in dollars) | Annual hot water cost after renovation (in dollars) | Hot water system before renovation | Hot water system after renovation | Annual hot water energy usage before renovation (in kWh) | Annual hot water energy usage after renovation (in kWh) | Energy Use Intensity (EUI) of the structure before renovation | Energy Use Intensity (EUI) of the structure after renovation | Is the retrofit now using renewable energy sources? | If using renewable energy, please describe the type, kWh generation and any other system specs | Were/are any passive house certified materials used? | Please describe your reasoning in using certified or non-certified materials | Door type before renovation | Door type after renovation | U-value of doors before renovation | U-value of doors after renovation | Please describe any methods you're using for controlling thermal bridging, water, vapor and air movement related to doors | Window type before renovation | Window type after renovation | U-value of windows before renovation | U-value of windows after renovation | Please describe any methods you're using for controlling thermal bridging, water, vapor and air movement related to windows | Please give this assembly a name (label), if you are entering multiple assemblies | List all materials in the wall assembly before renovation (please list from outside to inside) | List all materials in the wall assembly after renovation (please list from outside to inside) | R-value of wall assemblies before renovation | R-value of wall assemblies after renovation | Please describe methods for controlling thermal bridging, water, vapor and air movement related to the wall assembly, e.g. materials used and construction | Materials in the roof assemblies before renovation | Materials in the roof assembly after renovation | R-value of roof assemblies before renovation | R-value of roof assemblies after renovation | Please describe methods for controlling thermal bridging, water, vapor and air movement related to the roof assembly, e.g., materials and construction | Construction makeup of the foundation and ground water/vapor management systems before renovation | Construction makeup of the foundation and ground water/vapor management systems after renovation | R-value of foundation and ground water/vapor management systems before renovation | R-value of foundation and ground water/vapor management systems after renovation | Please describe any methods for controlling heat, water, vapor, and air movement related to the foundation and ground water/vapor management systems | Ventilation strategy (type and number of ERV or HRV) before renovation | Ventilation strategy (type and number of ERV or HRV) after renovation | If any make-up air systems were used, please describe | Please describe any thermal bridging issues before renovation | Please describe strategies to mitigate thermal bridging after the renovation | Please describe any moisture issues before renovation | Please describe the moisture control strategy after renovation | What rough percentage (0 - 100) of the wall assemblies have thermal bridges after renovation? | On a scale of 1 to 10, what was the perceived comfort of the structure before renovation? | On a scale of 1 to 10, what is the perceived comfort of the structure after renovation? | What was the total cost, or estimated cost, of design for the retrofit project (in dollars)? | Total construction cost per square foot, or estimated cost, for the project (in dollars) | Total door cost (in dollars) | Total door cost (in dollars) | Total windows cost (in dollars) | Total wall assembly cost (in dollars) | Total roofing cost (in dollars) | Total foundation cost (in dollars) | Total ventilation cost (in dollars) | What types of funding did you use? | Roughly what percentage (0 - 100) of the project was financed? | If you calculated it, what was the energy return on investment, i.e. the EROI (in dollars)? | On a scale of 1 to 10, how much did you take the EROI into consideration before starting the project (if it was calculated)? | What is the expected life of this retrofit (in years)? | If you do another retrofit, what would you do differently? | What do you wish you knew before starting the project? | Any other relevant info or data that we didn’t ask about? | HTML | Financing | Local regulations and rules | Technical challenges | Procuring materials | Working with your builder and/or architect | What would you say was the most successful part of the process? | Please upload up to four images of the structure and/or retrofit |
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Alan GIbson | GO Logic | Alan Gibson | GO Logic | Alan Gibson | Maine | 1870 | 2021 | suburban | wood-frame | residential | Demolished existing ell and rebuilt it and renovated existing main house. | whole-building-retrofit | Need to be renovated and budget allowed. Owner driven. | 2640 | 2640 | 01/07/2019 | 10 | Leave as much existing structure and interior finishes- insulate and air seal existing structure. Triple glazed windows and doors all new exterior finishes | no | no | no | no | 20 | existing-boiler | heat-pump | other | air-source-heat-pump | no | didn't really come up | typical uninsulated exterior door | Kneer-Sud | .16 | over insulation of frame, air sealed to rough opening | single pane double hung, wood | triple glazed pvc | 1 | .15 | installed in middle of the wall assembly, air sealed, sill pan | existing house | 2x4, insulated with old style foam | added 6" EPS to exterior. Added dense packed cellulose to renovated walls, loads of loose cellulose to attic | 10 | 34 | New layer of air sealed sheathing, continuous exterior insulation, rain screen, siding, trim | wood frame, some fiber glass insulation in attic | wood frame, loose fill and dense packed cellulose | 20 | 60 | New metal roof, vented | existing stone foundation, full basement | in new ell poured concrete with 6" EPS on the exterior of new foundation, footing drains | 10 | 25 | New air/vapor barrier and foam below slab in ell.
French drain (trench) around existing perimeter. | exhaust only fans. | Zehnder ERV CA350Q | through out building assemblies | Continuous exterior insulation at walls and new foundation | definite presence of moisture in basement.
moisture related rot to basement framing | structure much more airtight and added the ERV. | 5 | 203 | 6000 | 6000 | 26700 | 18000 | 7700 | 8200 | personally-funded | 100 | Remove existing foundation under the ell. Thought we could make it work, but the actual condition required a whole new foundation. Completely renovate the bathrooms from the beginning. | More comprehensive design process at the beginning. | The success of the project was unifying the design and program, while modernising the house to fit contemporary lifestyle. | On a scale of 1 to 10, with 1 being very easy and 10 being very tough, how difficult were the following aspects of the project? | Preserving existing old structure which had architectural integrity, while adding new space at a passive level. |
a passivhausMAINE initiative
