There are two types of roof overhangs two consider.
Roof overhang or not.
An eave is created by extending the slope of your roof beyond the walls of your shed.
Knowledgeable roofers will install shingles at just the right overhang for your roof type.
The roof overhang is too wide the roof overhang does not extend far enough.
Gable roofs even with no overhang are at a disadvantage in high winds.
A rake overhang is created by extending the roof beyond the gables of your shed.
For instance i think that in heavy snow country large overhangs can lead to ice dams forming on the overhangs snow melting.
If the roof is hidden if its presence cannot be felt around the building or if it cannot be used then people will lack a fundamental sense of shelter we had really debated about doing a house without overhangs which when scouring design sites we had seen a lot.
When the exterior look is the highlight they can add the stylishness and elegance of your house.
The most primitive buildings are nothing but a roof.
An eave overhang is located on the longer sides of the shed.
You may want one or the other or both.
See below i need to acknowledge there are some good reasons in some places to not have a large overhang.
One function of a roof overhang is directing water away from the foundation.
They provide a shady cooling spot near your windows during summer.
Roof overhangs might not be as popular as roof ventilator or other parts in a roofing system.
A rake is an overhang located on the gable end of your roof.
A high quality gutter system is necessary for this as well but roof overhangs greatly increase a roof s productivity in this area.
The edge of the shingles should hang over the edge of the roof between an inch and an inch and a half or between a half inch and three quarters of an inch if drip edge flashing is installed and in most cases it should be.
Having overhang prevents the water from making contact with the structural areas of the roof.
The overhang of roof shingles is the amount of the shingle that extends past the lower edge of the roof creating a lip.
On the lake side of the wasatch range in utah there are almost no buildings built with overhangs due to the frequent strong and steady winds.
One of best films i ever saw was of a hawaii roof with overhangs lifted in one piece total off the building.
There are two common problems encountered with roof overhangs.