Thermal Bridging at Balconies and Doors Guide
Abstract
This guide outlines how to utilize data in the ThermalEnvelope.ca database that separates the impact of the door and spandrel sill interface at concrete curbs, and related thermal bridging, from the thermal transmittance for the balcony.
This is an enhanced methodology that has evolved from combined transmittances for door and balcony details. The methodology for evaluating doors and balconies has evolved to:
Encourage mitigating the impact of the door-to-curb interface,
Avoid discounting how much mitigation is provided by balcony thermal breaks, and
Facilitate the data being directly applicable to more project specific scenarios.
When applicable, both the door or spandrel sill linear transmittance and balcony transmittances need to be included in calculations for the overall opaque thermal transmittance. This guide provides example calculations that show how to utilize the data in overall thermal transmittance calculations.
