Roof Drop Per Foot

Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot.

Roof drop per foot.

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. Pitch is thus the ratio of the rise in inches to a 12 inch run and is often expressed using a semicolon for example 6 12. No you cannot install metal shingles on a low slope roof. Anything less than one eighth of an inch may pool on the roof.

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. Minimum roof pitch for a covered porch. A roof that rises 4 inches for every 1 foot or 12 inches of run is said to have a 4 in 12 slope.

Some building codes start at one quarter of an inch per foot or two percent. 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. However an ideal roof drop per foot should be at least one eighth to one quarter of an inch per foot.

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.