Red Seal Construction Craft Worker Practice Exam

A higher "R-value" indicates better thermal resistance and effectiveness of insulation materials. The R-value measures the material's ability to resist heat flow; the higher the R-value, the greater the insulating effectiveness. This means that insulation with a higher R-value provides better energy efficiency by reducing heat loss in colder months and heat gain in warmer months. Consequently, it helps maintain comfortable indoor temperatures and can contribute to reduced energy costs. While some insulation with a higher R-value may also incur higher costs or might be heavier, those factors do not define R-value itself. The emphasis is on the ability to resist heat transfer, which is why a higher R-value correlates directly with improved performance in terms of thermal insulation.