How To Meaure Roof

Stretch your tape measure along the walls from end to end.

How to meaure roof. Remember that the length and width need to be found for the roof not the house so take into account that the roof overhangs the building. You will need to express this size in terms of square feet. First measure the length and width of each surface on the roof then multiply these values to get the square footage of that surface. Then determine the area of the roof as if it were flat.

It does have to contain all the straight lines of your roof and an accurate measurement of those lines. Remember it doesn t have to be to scale or look pretty. Thus in a simple style house you ll only have to click on the corners. L h 2 area calculating an area of a triangle when estimating a roof.

Keep in mind that the average size of a roof is 1 700 square feet so your total will likely be 10 higher or lower than this figure. Calculate the pitch of the roof. Finding the total roof area. To find the pitch of your roof you ll first.

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. Use a level against the underside of the rafter you re measuring to get the most accurate value. 1 roof square 100 square feet. This can be done by multiplying the length in feet by the width in feet to get the area measurement.

Measuring the length and width of each plane by hand 1. Outline the roof at the points that are on the same level or elevation to ensure that you re getting an accurate calculation of your roofing measurements. Outside of the u s a degree angle is typically used. Find the length and width of the building s exterior walls.

If you were to click on the peaks it wouldn t give you an accurate reading of your measurement. Access one of the rafters then take the measurement this way. Roughly draw out your roof on a piece of paper. Once the area of the roof s footprint is known the overall roof area can be found by accounting for the pitch of the roof.

So if you divide your answer of a product of length times height by two you will get the area of a triangle. The pitch is the steepness of the roof. Each area on the roof is a single plane which just means it s a surface with a. Draw an overhead view of your roof.

Measuring your roof from the ground 1. The first step in a free roofing estimate is measuring the roof dimensions. For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches. The length l times the height h of a triangle is twice its area a2.

Make sure to document the number of chimneys skylights or other obstructions and include dormers in your measurements. For example what we need on the picture of the roofs below are measurements of all the blue or red lines. Use a pitch. Climb a ladder with a notepad a pencil and a measuring tape.