Program Updates: 2019 High Density Renovation Checklist

Built Green Canada has been working on the last several months on a High Density Renovation and has three projects enrolled in this pilot. The new Renovation Program in pilot phase maintains the same seven categories as the High Density New Construction program and is contained within the same checklist. The main considerations and differences are outlined below.

Section 1: Energy & Envelope

Energy Modeling – for all BUILT GREEN® HD Renovation Pilot projects:

• To qualify for the BUILT GREEN® HD Pilot Renovations program, substantial upgrades/retrofits must be made to the following energy-related building systems:
•   Building Envelope (must include upgrade to at least 50% of walls; and/or 50% of windows and/or 90% roof); AND
• Mechanical and Electrical Systems (must include at least two of the following: major upgrades to heating; cooling; ventilation; service hot water for entire building; and/or lighting upgrades for at least 50% of building areas);

Building Component	Upgrade Scope	BG HD Reno Compliant
Exterior Walls (50%+)	%	Yes / No	At least 1 required
Exterior Windows (50%+)	%	Yes / No
Roof (90%+)	%	Yes / No
Building Heating	e.g. Boilers	Yes / No	At least 2 required
Building Cooling	e.g. Cooling tower	Yes / No
Building Ventilation	e.g. MUAs	Yes / No
Domestic Hot Water	e.g. DHW heaters	Yes / No
Building Lighting (50%+)	%	Yes / No

• The existing building’s energy performance must be modeled with any approved government software, such as EE4, EQuest or CanQuest.
  
• Where an existing building and an addition are present, both areas of the building must be included in the energy model.
  
• The energy performance of the building’s upgrades and retrofits is compared to the prescriptive requirements of the energy standard used for modeling (NECB 2011 or ASHRAE 90.1-2010). All energy savings demonstrated will result from increased performance in these areas.
  
• Existing building systems and elements are modeled identically between the design case and energy standard reference case according to industry-standard requirements, but must be included in the energy model.
  

Section 2: Materials & Methods

2.1.8       HD RENOVATION PILOT ONLY - Credit for reuse of building materials may be claimed. Reuse of building walls, floors and roof structure by area (m2) 50% for 5 points, 60% for 6 points, 70% for 7 points, 80% or greater for 8 points. Reuse will still apply to assemblies where wall and roof insulation, cladding, roofing and interior finishes are upgraded.

**The builder will have the choice of achieving materials points for reuse per the appropriate checklist items a la carte, Or, taking credit once for the reuse with the new Section II checklist item, and then documenting all new materials as they would for a new build.

Section 5: Waste Management

5.11        HD RENOVATION PILOT ONLY - Credit for reuse of building materials may be claimed. Reuse of building walls, floors and roof structure by area (m2) – 50% for 1 point, 75% for 2 points, 90% for 3 points. To claim credit, at least 2 points must also be achieved in checklist item 5.4 for the overall construction waste (50% diversion from landfill). Reuse will still apply to assemblies where wall and roof insulation, cladding, roofing and interior finishes are upgraded.

We know this is a time of transition with building code changes, and we will do whatever we can to support our builders. Should you have questions or require support, please do let us know.

Find updates to the 2019 Single Family Program tent.php?secondary_id=504&id=1456">here and 2019 High Density Program here.