ISO/TR 5863:2025

This document provides an overview of the design principles for the building envelope in order to achieve a high quality and energy efficient built environment. The design principles include: — thermal performance; — daylight and visual environment; — air quality; — provisions of natural and mechanical ventilation; — air barrier (airtightness); — watertightness; — moisture proof; — soundproofing; — sustainability and integration with technical building systems and controls. This document is applicable to new buildings and the retrofit of existing buildings.