Homestar Technical Clarification Rulings
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| Technical Question Title | Tool Version | Date Released | Credit Name | Tool Category | TC Link |
|---|---|---|---|---|---|
| TQ131 Adiabatic Surface for Adjoining Conditioned Space | v4.1 | April 2021 | EHC | Link | |
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Approved Ruling: NZGBC is issuing the following guidance for mixed-use developments where residential dwellings share an intertenancy floor, wall or ceiling with a commercial, retail, hotel or other non-residential space. In mixed-use buildings where an intertenancy wall, floor or ceiling (hereafter referred to as a ‘partition’) is shared between residential dwelling and an adjacent non-residential space, that partition can be considered adiabatic if the adjacent space is conditioned, and any air gaps within the partition itself is edge sealed and not exposed to unconditioned ambient air (refer to Homestar v4 guidance on treating intertenancy walls). The adjacent space can be considered conditioned if either: a) It is not an industrial building AND it is part of a building with a Green Star rating of 4 star or above, or, b) its building envelope is insulated to meet NZ building code, clause H1.2a, H1.3, and is designed to maintain an indoor temperature of 20˚- 25˚ at least 50% of the day. |
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