Roof Drop Per Foot

Adding a covered porch adds exterior space to a house and providing a.

Roof drop per foot.

No you cannot install metal shingles on a low slope roof. Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot. Minimum roof pitch for a covered porch. Some building codes start at one quarter of an inch per foot or two percent.

Most metal roofs will have minimum pitches of three in twelve but this might sometimes go down depending on whether there are special installation procedures issued by the manufacturer regarding that particular roofing material. For budget conscious homeowners metal shingles will run about 7 to 10 per square foot installed while corrugated metal sheets can be installed for 3 50 to 5 50 per square foot for materials and labor. Anything with a slope of some kind will cause water to run off the roof. Anything less than one eighth of an inch may pool on the roof.

If the rise is 6 inches for every 12 inches of run then the roof slope is 6 in 12 the slope can be expressed numerically as a ratio. A roof with a 6 rise for every 12 run has a 6 per foot or 6 in 12 pitch. The slope ratio represents a certain amount of vertical rise for every 12 inches of horizontal run. A roof protects a house and porch from snow and rain as well as the heat of the sun.

To get the minimum pitch for a metal roof the vertical rise per foot is divided by the horizontal slope.