Advantage of a Pitched Roof
Pitched roofs are generally less expensive to install and last longer than low slope roofs. This is because shingle systems are easier to install than membrane systems and shingles cost less. This is a generalization that depends a great deal on the type of roofing material you install, but is a good guiding principal. My personal favorite pitch for a roof is a 5 and 12; this pitch sheds water well but is not too steep – you can still have good roof overhangs to protect the building and the roof is just shallow enough in pitch that you can walk on the roof to service it. Roofs steeper than 5 and 12 are difficult to walk on.