How to calculate the roof area using the building square footage the pitch of the roof.
Measure roof area.
A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally.
The roof area is simply 114x18x2 plus 30x18x2 giving 5184 square feet which is perfectly adequate for estimating materials.
To accurately calculate the area of your roof you must first determine its slope or pitch.
So you re thinking of reroofing the house yourself and want an estimate for how much roofing material you.
Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs.
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.
To measure a roof start by measuring the length and width of the building s exterior walls and multiplying them to get the area.
A 12 in 12 pitch is a.
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.
In cases where a roof has a complex shape such as in the image to the right measuring the dimensions and areas of each part of the roof to calculate total area will result in a more accurate measurement of area.
First use your measuring tape to measure 12 inches on your large level and make a mark at the 12 inch line.
The calculated area is only an estimation.