2025 Resource Library

Airtightness, Ventilation and Thermal Bridging

Building envelope performance depends on three critical elements: eliminating thermal bridges that create heat loss pathways, achieving airtightness to control air movement, and providing effective ventilation for healthy indoor air quality. These interconnected fundamentals work together to deliver the comfort, efficiency, and performance standards required for Passivhaus buildings.

Airtightness & Thermal Bridging

  • What is a Thermal Bridge?

    Fundamental concepts and identification guide

  • Calculating Linear Thermal Bridges in Passive Houses with THERM

    Step-by-step modeling instructions and software guide

  • The Passivhaus Guide to Airtightness

    Comprehensive overview of principles and best practices

  • Good Practice Guide to Airtightness

    Practical implementation strategies and common challenges

Ventilation & Health

  • Designing Passive House Ventilation Systems

    Putting ventilation front and center in design process

  • Ventilation Design for Multifamily Residential Buildings

    Specific considerations for multi-unit developments

  • Ventilation Systems Overview

    Visual guide to system types and installation (video)

  • Health and Wellbeing in Highly Energy Efficient Buildings

    Field study results on occupant health outcomes

  • Passive House and Radon Control

    Effective radon mitigation in domestic construction

Summary

Airtightness, Ventilation and Thermal Bridging

Thermal Bridging

Airtightness Fundamentals

Ventilation Design and Health

Health and Performance Research

Meet the 2024 Incubator Participants

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