Roof Eaves Dimension

Anything more than 9 in 12 is considered steep.

Roof eaves dimension.

The eaves form an overhang to throw water clear of the walls and may be highly decorated as part of an architectural style such as the chinese dougong bracket systems. Roof overhangs are the amount that the roof hangs over the top of the siding in residential home construction. A low slope roof is anywhere from 2 in 12 to 4 in 12. Some roofers install a layer of waterproof shingle underlayment wsu over the existing shingles at the eave end as would be done for a roof laid on bare sheathing.

An eave is the edge of the roof that overhangs the face of a wall and normally projects beyond the side of a building. Rw roof width dimension a in my sketch at left. Steeper sloped roofs are considered more aesthetically pleasing and last longer. It is often compared to slope but is not exactly the same.

Shingle roofs typically have a life span of 15 30 years while membrane roofs usually last 5 15 years. Roof pitch is the measurement of a roof s vertical rise divided by its horizontal run. Overhangs are common in most house designs providing protection against both wind and rain. Conventional slope roof range between 4 in 12 and 8 in 12.

Roof pitch refers to the amount of rise a roof has compared to the horizontal measurement of the roof called the run. A 12 in 12 roof can cost up to 50 more than a 4 in 12 roof. Eaves form the overhang to distribute water clear of the walls. Rl roof length dimension of the roof from one gable end of the building to the other.

They also help to frame windows on upper stories. That is their functional purpose. Asphalt shingles can be laid over cedar shakes or shingles however this is a roofing project best left to pros. This provides added protection against ice dams.

Rl is simply the building width plus the amount of overhang at the two gable ends of the building. Remember to include in a the amount by which the roof extends out over the building walls its eaves. However there is also an architectural purpose to them. Although ceramic tile roofs are expensive they can have a life span of over 100 years.

The siding underneath the overhang is known as the soffit.