Explanatory Material "Fundamentals of Insulation"

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last updated：Oct 24, 2025

An explanation of the basics of "insulation," which is essential for building homes. It also introduces points to consider when choosing insulation materials and an overview of design methods.

This document provides a clear summary of the basic knowledge regarding "insulation," which is deeply related to the comfort of living environments, including its necessity, types and characteristics of insulation materials, and points to consider when selecting them. It also explains the standards, design methods, and calculation methods for insulation. Additionally, it introduces the primary energy consumption that must be met under the Energy Conservation Act for Buildings. 【Contents (Excerpt)】 1. Why is insulation necessary? 2. What is insulation? What is heat shielding? 3. Insulation in residential buildings 4. Types of insulation materials and insulation construction methods 5. Insulation standards and the basics of insulation design 6. Methods of insulation design *The document can be viewed immediately via "PDF Download."

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【Table of Contents】 ■Rising Outdoor Temperatures　　　　　　　■Evolution of Insulation Systems ■Factors Affecting Perceived Temperature　■Conduction, Convection, and Radiation ■What is Insulation: Difficulty of Heat Transfer　　　■What is Heat Shielding: Reflection of Heat ■Key Points of Insulation in Housing　■Insulation Effects in Housing ■Types and Materials of Insulation　　　　　■Considerations When Choosing Insulation Materials ■Internal Insulation Methods and External Insulation Methods　　　■Two Methods of Insulation Design ■How to Calculate the Average Thermal Transmittance of the Building Envelope　　■How to Calculate the Average Solar Gain Rate During Cooling Period ■How to Proceed with Specification Standards Route　　　■Design Considering Actual Living Environment