Roof Pitch Explained

The rafters equal the span.

Roof pitch explained.

The ridge height is 2 9ths to 1 3 the span an angle of 24 to 34. Roof pitch defined and explained numerator. Commonly used roof pitches were given names such as greek. So let s say a roof rises 6 inches for every 12 inches in depth towards the peak.

The ridge height is 1 9 to 1 7th the span an angle of 12 5 to 16. Roof pitch is the rise of the roof over the run of the roof. The roof pitching is essentially how steep the roof is going to be they are either going to be flat or pitched. The steeper the roof the more quickly it will be able to shed rain and other debris.

That is to say the roof pitch expressed as a ratio tells you how many inches the roof rises for every 12 inches of depth. The denominator or second number denotes the horizontal length measurement of the roof. Even flat roofs aren t completely flat because they must be constructed at a very slight incline so rain can be directed away from the roof. Roof pitch explained a roof s pitch can be thought of as its slope.

The pitch of your roof is determined by the measurement of the vertical rise by the horizontal run. The rafter length is 3 4 the span about 48. The numerator or first number refers to the vertical height measurement of the roof.