Author/Contributor: SSRIA, SAIT, Retrofit Canada, 4 Elements Integrated Design
Alberta Context: This is a Calgary, Alberta based residential deep energy retrofit to Net Zero.
Summary: This Albertan homeowner and contractor completed a full Deep Energy Retrofit to Net Zero as part of a 3 Case Study project with support from SSRIA.
The goals of this project in Calgary, Alberta were operational Net Zero, electrification & solar PV, and preferred use of sustainable/recyclable insulation material.
“Phase 1 consisted of:
- attic & roof improvements. Existing insulation, 2 chimneys, 2 bath fan vents, & the main plumbing stack penetrations were removed, all leaks were manually sealed. Shingles were replaced and the perimeter attic/wall air barrier connection made with spray foam prior to blown in cellulose insulation.
Phase 2:
- removal of natural gas appliances
- install heat pump & fan coil, ERV, heat pump hot water tank & dryer, electric induction range & fireplace (& garage heat pump).
- gas meter removal
- electrical service masts moved to the garage and upgraded to 200 amps available on local transformers
Phase 3:
- removal of exterior vinyl, foam insulation, stucco, siding, and original windows
- 8″ site built “Larsen” wall installed with 2×2, plywood girts, and exterior plumbed 2×2 prior to installation of new windows & doors
- After mesh & cellulose install, Typar AWB was installed & tape sealed, and walls were strapped for install of vertical corrugated metal siding”
(From: Retrofit Canada (2023) 1955 Bungalow Deep Energy Retrofit)
Read the deep energy retrofit case study here.
