Red Seal Glazier Practice Exam 2025 – The All-in-One Guide to Master Your Certification!

Poor thermal insulation in glazing primarily increases energy usage drastically. This occurs because inadequate insulation allows heat to escape in the winter and enter during the summer, leading to significant energy loss. As a result, heating and cooling systems must work harder to maintain a comfortable indoor temperature, resulting in higher energy costs.

When energy efficiency is compromised due to poor thermal insulation, it can lead to increased carbon emissions as well, contributing negatively to the environment. Additionally, energy usage is directly tied to the effectiveness of a building's thermal barrier; thus, poor insulation exacerbates energy consumption issues.

While other choices address soundproofing capabilities and structural integrity, the pivotal concern with poor thermal insulation is its impact on energy efficiency, making the correct answer focused on energy usage.