INTRODUCTION This project is a new multi-story, high-rise inpatient healthcare facility which will use a variety exterior cladding materials. While Energy & Atmosphere Prerequisite 1 refers to the building envelope as "an important component of a facility which impacts energy consumption, occupant comfort and indoor air quality," this prerequisite does not provide guidance or measurable goals for improving the building envelope through commissioning. In order to address items that go beyond the scope of EAp1 such as quality control, maintainability, rain penetration control, mold prevention, building longevity, and ultimately building sustainability, we propose an innovation strategy using NIBS Guideline 3-2006 to direct the envelope commissioning process. This strategy shall follow commissioning metrics including documentation, performance criteria, test procedures, and checklists. Specifically, the process shall explore requirements such as the impact of the building exterior enclosure on visual comfort, and IAQ. Documentation including a summary of the assumptions for accessibility to building exterior enclosure systems (maintenance, cleaning, etc.), and allowable ranges of operations for the building exterior enclosure (number of days/year that the owner is willing to accept condensation, etc), quantify goals and provide the owner with enhanced control of the building. With incorporation of the building envelope into the commissioning process, we propose this innovation credit will improve the inter-relationship of the exterior enclosure system with other building systems and ultimately ensure adequate and quality functioning of the exterior enclosure system throughout its expected service life. INTENT Verify that the building exterior enclosure systems are designed, installed, and perform according to the OPR, BOD, and construction documents. BENEFITS OF COMMISSIONING THE BUILDING ENVELOPE Benefits of building envelope commissioning include: better building documentation, improved coordination of envelope components, enhanced resistance to water infiltration, improved maintainability, improved indoor environmental quality and verification that the systems perform in accordance with the OPR. REQUIREMENTS 1. Adherence to commissioning requirements and activities. Inclusion of building envelope quality assurance criteria and documentation emphasizing: a. Visual comfort and indoor air quality b. Rain penetration control c. Durability d. Constructability e. Maintainability f. Sustainability 2. Field review of aesthetic and functional mock-up(s), including review of both the unique interface conditions and general interface conditions. Verify the design intent is met and the level of water and air tightness of the exterior enclosure is as specified in the OPR. 3. Periodic construction monitoring, especially during roof transition/ roof termination installations, initial installation of sealants, and the specific project interfacing conditions (below grade waterproofing, differing material interfaces - green roofs and fenestration expansion joints, etc). 4. Performance testing of building envelope, including but not limited to: a. Infrared scanning of constructed building to identify thermal leakage. b. Water infiltration testing to identify leakage and prevent heat, air, moisture, and mold (HAMM) issues which will improve IAQ. c. Additional testing as identified per envelop system. 5. Validation that performance parameters for each exterior enclosure system meet the OPR. 6. Development of a Systems Manual for each major building exterior enclosure system, including but not limited to: a. Roof/Garden Roof b. Exterior walls c. Windows d. Doors e. Sealants and expansion joints f. Control joints g. Flashings 7. Training: maintenance of the exterior enclosure (window washing, inspecting and repairing joints/weather-tight seals, etc). We intend for the Enhanced Building Envelope Commissioning credit to follow the same basic scope parameters as EAp1 (design review not required, etc.). Given this, we propose that this credit will not be contingent on any other credits including EAc3. Please confirm all the above strategies could constitute a valid ID credit. If denied, please state under which conditions the credit could be achieved.