The site below that explains the pitch - how to measure it with a calculator to use with pitch and calculate the total footage of your roof
2
The pitch of the roof.
Pitch is a bitumen or it can mean the slope of the roof for example 1/8" per foot fall
You cannot calculate the square footage of a house roof like this (unless you have a flat roof). The simplest way would be to go up on your roof and measure its different surfaces, however if you dont want to do that, you would need to know several differen things to calculate the surface area -- such as the pitch and angel -- how much hangover you have. Basically you should save yourself time and go up on your roof and measure it
The site below that explains the pitch - how to measure it with a calculator to use with pitch and calculate the total footage of your roof
Yes, it can have any pitch, the pitch is the ratio of the number of units (usually inches) run (horizontal) to the number of units rise (vertical). The units of run is always 12 therefor if you measure over 12 inches then measure up at 90° that number represents the pitch. If you measure over 12 inches and measure up 8 you have an 8/12 pitch roof.
That is the Pitch or slope of the roof. It means that in one foot of horizontal measure you will have 5" of rise .
it's easier than that. . . take a four foot level up to the roof and measure the distance from the bottom of the level to the roof and divide by 4. . .that is the pitch
In general, talking about roof pitch, I have never heard or read about this term being used. Roof pitch is measured when you start at the leading edge of a roof and measure towards the center of the house too 12 feet. Pitch is measured from a imaginary parallel level line at the 12 foot mark, how many feet high the roof is at 12 feet is the pitch of a roof. If your roof is at 4 feet high at the 12 foot mark then the phrase would be- a 4/12 pitch.
You can either buy a pitch guage - available at most home improvement retailer or measure manually. Pitch is guaged by the rise over a 12'' run. Therefore, an 8 pitch roof rises 8'' for every foot. Therefore, if you take a level and mark it at 12'', hold one end against the roof, hold it level, and then measure the distance between the level and the roof at the 12'' mark, you will get your pitch. An inexpensive guage is definitely the way to go, but there are your options.
The area of a roof can be determined from the area covered by the building to the outside of the walls and taking in to account the pitch of the roof by adding on a percentage depending on the pitch. A method is shown at the web link below along with a table of the percentages to be allowed.
The slope. Example - a 12/12 pitch means for every foot of span there is one foot of rise.
To pitch of roof, place a one foot level on the roof with one side touching, and the other side in the air (leveled) from the side in the air, measure down in inches. If you measure 5 inches, then your roof has a 5/12 pitch; meaning it rises five feet of height in every twelve feet of run. Using this number and a little math you can figure the height of roof ridge, measure total width, divide by two to find one half. If your roof pitch was 5/12 and you measured the half measurement to center of 14 feet, then your height to the ridge (off the top of end wall of house) is 5.83 feet. This number is found by dividing your pitch numbers; 5 divided by 12, and then multiply that number by 14.
2
A single pitch roof is basically a flat roof with a pitch (or angle), usually to allow water to run off. This differs from a double pitch roof /\ that is what you commonly see.
Roof pitch is measured in "rise over run". In other words, how many inches does the roof rise vertically in 12" of horizontal run. If a roof rises 4" in 12" of run, you have a 4/12 roof pitch.