What is true about mansard roofs in relation to pitched houses?

Mansard roofs are characterized by their unique two-sided slopes, which allow for a greater amount of usable space within the upper stories of a building. This distinctive design can be beneficial for pitched houses as it provides additional living area without the need to increase the overall height of the structure significantly. The lower slope creates a space that can be easily converted into an upper floor or attic, effectively maximizing the building's potential without intrusive structural alterations.

The advantage of adding a mansard roof is that it provides greater architectural versatility and additional usable space, making it a popular choice for homeowners looking to enhance the functionality of their houses while maintaining aesthetic appeal. This is particularly useful in areas where zoning regulations may restrict height increases.

In contrast, other options such as unsuitable characteristics for upper stories, insulation needs, or limitations to flat roofs do not accurately represent the functionality and advantages of a mansard roof. This makes the second statement not only true but integral to understanding the benefits of mansard roofing in residential architecture.