Final answer:
Inspectors should report the approximate depth of attic insulation whenever it is visible. Thicker insulation provides better heat retention and reduces heating costs more effectively.
Step-by-step explanation:
Inspectors should report the approximate depth of attic insulation whenever the insulation is visible.
In terms of insulation, the thickness of the material plays a crucial role in determining its effectiveness. A larger thickness reduces heat transfer, making the insulation more efficient.
For example, fiberglass batts with a thickness of 3.5 inches have an R factor of 11, while those with a thickness of 6.5 inches have an R factor of 19. This means that thicker batts provide better insulation and reduce heating costs more effectively.