The slope of the roof is measured by the vertical rise of the roof to the horizontal run. It is expressed as a fraction. For example, a 6:12 roof slope means the roof rises 6 inches for every 12 inches of horizontal roof span.
The slope of the roof is measured by the vertical rise of the roof to the horizontal run. It is expressed as a fraction. For example, a 6:12 roof slope means the roof rises 6 inches for every 12 inches of horizontal roof span.