First measure 12 inches from one end of the level and make a.
How do i measure my roof.
First measure the length and width of each surface on the roof then multiply these values to get the square footage of that surface.
The google maps area calculator is not 100 accurate.
Start your free trial.
To begin with you re going to go to the app on your mobile device or you will need to go to google earth on your laptop or desktop computer.
The first of which is that you don t even have to go up on the roof.
Move the tape measure along the the roof until it hits the level at exactly the 12 inch mark.
Roof pitch is the measurement of a roof s vertical rise divided by its horizontal run.
On your next roofing estimate i suggest that you compare the total square footage number you get by actually measuring a roof to the number you end up with after using these 2 little calculations.
Similarly if you using the area calculator tool to measure a roof with multiple levels you should do the individual section separately.
It is often compared to slope but is not exactly the same.
Measure the vertical distance from roof to level.
In the united states a run of 12 inches 1 foot is used and pitch is measured as the rise of the roof over 12 inches.
After measuring the area of the footprint you can estimate the actual roof area based on the angle of the roof.
Make sure to document the number of chimneys.
Then calculate the pitch of the roof by placing a level against it angling the level so the bubble is centered and measuring the distance between the end of the level and the roof.
Once you see how surprisingly close the end result numbers are to each other you can then decide whether or not to retire your ladder with confidence.
To calculate the size of the roof you need to measure the size of the roof as if it were flat account for roof pitch calculate square footage and finally determine how many squares of material are required for the roof the calculator above can handle all of this simply enter the length width and pitch and it will determine the size of the roof in squares.
Use the step by step guide below to accurately measure your roof and estimate roofing costs.
To measure a roof start by measuring the length and width of the building s exterior walls and multiplying them to get the area.
The roof area for a hip end is the same as for a gable end the intersection is equivalent to a hip slightly conservative so there is usually no need to consider triangles when measuring a roof.
This can make it even safer to do your measuring and it also removes a level of guessing to your calculation.
The roof area is simply 114x18x2 plus 30x18x2 giving 5184 square feet which is perfectly adequate for estimating materials.
To measure the roof pitch you ll need an 18 or 24 inch level a tape measure and a pencil.
Note the vertical distance on the tape measure and write this value down.
How to calculate your roof square footage.
Here s an easy safe way to determine the pitch from inside your attic.
