Roof Drop Per Foot

The slope ratio represents a certain amount of vertical rise for every 12 inches of horizontal run.

Roof drop per foot. Minimum roof pitch for a covered porch. Adding a covered porch adds exterior space to a house and providing a. Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot. A roof protects a house and porch from snow and rain as well as the heat of the sun.

No you cannot install metal shingles on a low slope roof. Some building codes start at one quarter of an inch per foot or two percent. 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. 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.

However an ideal roof drop per foot should be at least one eighth to one quarter of an inch per foot. A roof that rises 4 inches for every 1 foot or 12 inches of run is said to have a 4 in 12 slope. A roof with a 6 rise for every 12 run has a 6 per foot or 6 in 12 pitch. 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.