Roof Eave Length

The roof overhang length must be properly engineered to resist wind uplift.

Roof eave length.

Roof base length width how roof pitch is calculated. It is the length of this portion of the rafter. Pitch is the incline of the roof represented as the ratio of rise to the span twice the run. The siding underneath the overhang is known as the soffit.

An eave is the edge of the roof that overhangs the face of a wall and normally projects beyond the side of a building. The eaves may terminate in a fascia a board running the length of the eaves under the tiles or roof sheets to cap off and protect the exposed rafter ends and to provide grounds on which to fix gutters. If you add an eaves overhang dimension then the amount the rafter sticks passed the wall will be added to the rafter length. Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12.

Roof overhangs are the amount that the roof hangs over the top of the siding in residential home construction. 29 gauge galvalume gr2 gable rake flashing in gray. Includes result for hip valley factor slope factor and the roof slope in degrees. Drip edge flashing.

29 gauge galvalume ef3 eave flashing in white. Calculate the length of a rafter from the roof slope ratio of inches per foot and a building width measurement. A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally. Multiply the gutter length by four if the eave is roughly one foot by five for a two foot eave and by six for a three foot eave.

The length of the overhang depends primarily on the climate. Roof pitch is the measurement of a roof s vertical rise divided by its horizontal run. The rafter member will be longer. If you plan to have overhang etc.

This is particularly true in geographical regions where high winds are a common issue. It is often compared to slope but is not exactly the same. To accurately calculate the area of your roof you must first determine its slope or pitch. For example if the roof rises 4 feet and the span is 16 feet twice the run then the pitch is 4 16 or 1 4.

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