Which type of roof would you avoid using if you want to prevent water retention on the roof?

Selecting a flat roof is generally not advisable if you aim to prevent water retention. Flat roofs, despite their aesthetic appeal and modern design, have a minimal slope, which can lead to water pooling. When rainwater does not effectively drain off a flat roof, it can accumulate and create weight, potentially leading to leaks, structural damage, or even roof collapse over time.

In contrast, pitched roofs are designed with a slope that facilitates rainwater runoff, thereby reducing the risk of retention. Similarly, hip and gable roofs also incorporate slopes that enable efficient drainage, further minimizing any potential water retention issues. Choosing a roofing style that promotes effective drainage is essential for maintaining the roof's integrity and longevity.