The concept of aged R- value is applicable to
A)perlite board insulation.
B)fiberglass insulation.
C)all insulating materials.
D)all building materials.
E)insulating materials that contain HCFC gas.

Question

Quizplus · Accepted Answer

The concept of aged R-value is specifically applicable to insulating materials that contain HCFC (hydrochlorofluorocarbon) gas. Over time, the thermal resistance (R-value) of these materials can decrease as the gas slowly escapes or degrades, affecting the insulation's effectiveness.

The Concept of Aged R- Value Is Applicable to