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SUSTAINABLE BUILDINGS

Asset Classes

Focus Area

Energy and Carbon

Topic

Envelope Performance

Question #

E11.1 — Envelope Improvement

Question

Have any of the low-cost envelope improvement measures identified in assessment, condition or deep retrofit studies been implemented?

Applicability

Applicable to all buildings (systems or equipment in the owner or landlord’s control)

Answer

Select all that apply:

    • Air leakage
    • Resealing
    • Window replacement
    • Adding shading to sunny areas
    • N/A – New building is already at high-performance OR No systems or equipment in the owner/landlord’s control
    • None of the above

Description

A building envelope includes exterior components, such as the roof, walls, foundation and windows. A high-performance envelope is the most effective opportunity for achieving decarbonization of a building through passive strategies.

Optimization of the envelope can significantly reduce heating and cooling Requirements in the building, thus reducing energy consumption and electrical demand as well as decreasing the size and costs of mechanical equipment.

Lower cost measures might include resealing, replacing broken windows, adding shading to sunny areas or similar strategies. At a minimum, air leakage should be addressed.

If budgeting and renewal cycles permit, it is ideal to undertake a deep green envelope upgrade before HVAC systems are retrofitted to optimize mechanical system design.

Requirements

    1. Identify the low-cost envelope improvement items from the assessment, condition or deep retrofit studies that have been implemented
    2. Document extent of implementation

Also see Other Notes

Documentation

    • Describe measure(s) implemented, the benefit and potential savings impact
    • Evidence of implementation through photos, as-built drawings or other proof

Adapted BB3 Question

New in BOMA BEST 4.0

Suggested Lead

In-house, with third-party support

References

None

Crosswalk

TBD

Other Notes

None

Scoring

1 or 2 Points, up to 4 Max Points 

Verification