Roof Eave Length

If you plan to have overhang etc.

Roof eave length.

By gibraltar building products 17 95. If you add an eaves overhang dimension then the amount the rafter sticks passed the wall will be added to the rafter length. 29 gauge galvalume ef3 eave flashing in white. Roof pitch is the measurement of a roof s vertical rise divided by its horizontal run.

To accurately calculate the area of your roof you must first determine its slope or pitch. It is the length of this portion of the rafter. Roof overhangs are the amount that the roof hangs over the top of the siding in residential home construction. Overhangs are common in most house designs providing protection against both wind and rain.

Pitch is the incline of the roof represented as the ratio of rise to the span twice the run. Includes result for hip valley factor slope factor and the roof slope in degrees. The roof overhang length must be properly engineered to resist wind uplift. The length of the overhang depends primarily on the climate.

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. 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. Measure the length of the gutter where you want to stretch the cable then figure out how far to the nearest foot the eave extends beyond the exterior wall of the home.

29 gauge galvalume gr2 gable rake flashing in gray. 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. Calculate the length of a rafter from the roof slope ratio of inches per foot and a building width measurement. In the united states a run of 12 inches 1 foot is used and pitch is measured as the rise of the roof over 12 inches.

Roof base length width how roof pitch is calculated. A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally. 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 rafter member will be longer.

Drip edge flashing.