Improper ventilation in roofing can lead to which of the following?

Improper ventilation in roofing primarily leads to decreased energy efficiency. When a roof is not adequately ventilated, it can cause heat to build up in the attic space during hot weather, which leads to higher temperatures inside the home. This increased temperature forces air conditioning units to work harder to maintain comfortable indoor temperatures, thereby consuming more energy and resulting in higher energy bills.

In addition, inadequate ventilation can also lead to moisture accumulation, which can foster mold growth and wood rot, further compromising the efficiency of the heating and cooling systems. This combination of effects explains why proper ventilation is crucial for maintaining energy efficiency and minimizing operational costs associated with climate control within a home.

The other options, such as increased roof lifespan, improved aesthetic quality, and stronger structural integrity, do not accurately reflect the negative consequences of improper roofing ventilation. In fact, improper ventilation can actually shorten roof lifespan due to heat damage and moisture-related issues.