C-17 Glazing Contractor Practice Test 2025 - Free Glazing Contractor Practice Questions and Study Guide

Triple-glazed or low-E glass is often required for energy-efficient buildings due to its superior thermal insulation properties and ability to reduce heat transfer. This glazing type features multiple layers of glass with insulating gas filled between them, significantly minimizing heat loss during colder months and heat gain during warmer months. Additionally, low-E coatings enhance energy efficiency by reflecting infrared energy while allowing visible light to pass through, further improving a building's energy performance.

In contrast, single-glazed glass lacks insulation and contributes to higher energy costs due to increased heat transfer. Tempered glass, while stronger and safer, does not offer the same thermal efficiency benefits as triple-glazed glass. Standard float glass is also not designed specifically for energy efficiency and has poor insulating qualities compared to triple-glazed or low-E varieties. Therefore, the emphasis on triple-glazed or low-E glass in energy-efficient buildings aligns with the goals of reducing energy consumption and enhancing overall comfort.