Roof Drop Per Foot

No you cannot install metal shingles on a low slope roof.

Roof drop per foot.

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. 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. 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. Anything less than one eighth of an inch may pool on the roof. A roof protects a house and porch from snow and rain as well as the heat of the sun. Anything with a slope of some kind will cause water to run off the roof.

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. 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. 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.

However an ideal roof drop per foot should be at least one eighth to one quarter of an inch per foot.