Pros
Roof space: If you want to have a small garden on your roof, or other extra living space, this is a good roof style to do that. It is also ideal for adding solar panels to the roof, or extra heating or cooling units.
Easy Construction: This is a simple roof to construct and install, since it requires less materials and less labor.
Cons
Leakage: Since this roof only has a slight pitch for rain runoff, they are much more susceptible to water damage. This is not a good roof for an area that has heavy rain or snow each year.
Maintenance: This style often requires more maintenance than other roofs and may need more frequent repairs.
Stagnant Water: If gutters are not installed, there is also the potential problem of water pooling up to create an area where mold, bacteria, and mosquitos can thrive.
Space: There is typically no attic space in a building with this style of roof.