A well-sloped roof with a sizable overhang is preferable to a flat or low-sloped roof for the following reasons:
The roof overhang plays an important role in protecting the walls and foundation from water damage by directing water away from the building.
Inert roofing materials are readily available and are standard products for sloped — roof construction, while they are an exception in flat or low-sloped residential roof construction.
Sloped roofs shed water quickly, whereas water will puddle and linger on poorly constructed flat roofs.
Flat roofs have a higher failure rate and shorter life expectancy, which may lead to devastating mold problems.
Overhangs can be sized to suit the solar conditions in your region, providing shade in the summer while allowing maximum heat entry in the winter.
