1. Introduction
  1.1 Background and Rationale
  1.2 Objectives of the Study
  1.3 Significance of Building Envelope Retrofitting
2. Literature Review
  2.1 Building Envelope Components and Functions
  2.2 Performance Metrics for Retrofit Evaluation
  2.3 Retrofitting Technologies and Materials
3. Methodology
  3.1 Building Envelope Assessment Methods
  3.2 Retrofit Cost Estimation and Life Cycle Analysis
  3.3 Environmental Impact Assessment
4. Building Envelope Performance Analysis
  4.1 Thermal Performance Evaluation
  4.2 Air Leakage and Infiltration Assessment
  4.3 Moisture and Condensation Risk Analysis
5. Retrofitting Strategies
  5.1 Insulation Upgrades and Thermal Bridging Mitigation
  5.2 Air Barrier Installation and Sealing
  5.3 Window and Door Replacement or Rehabilitation