How To Measure To Make A Roof

Area of section b 20 x 40 800 sqft.

How to measure to make a roof.

The length l times the height h of a triangle is twice its area a2. Calculate the pitch of the roof. Measuring your roof from the ground 1. To measure your roof from the ground use your tape measure to find the length and the width of the home by stretching the tape measure along the exterior walls.

Roof reports and wall reports made easy. Use a pitch. Find the length and width of the building s exterior walls. Use a tape measure to measure the entire width of your building.

Stretch your tape measure along the walls from end to end. 1 roof square 100 square feet. If your roof has overhangs eyeball them and add the approximate length to your measurements. We ll use satellite imagery and trigonometry to calculate your roof s measurements.

Before you start cutting you first need to determine how long your roof rafters need to be and the angles at which you ll cut the top and bottom of the rafter. For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches. 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. Outside of the u s a degree angle is typically used.

First measure the length and width of each surface on the roof then multiply these values to get the square footage of that surface. What you ll need to measure a roof. L h 2 area calculating an area of a triangle when estimating a roof. The first thing you ll need to measure is the square footage of your roof.

The positive roof measuring method requires you to break the roof up into measurable sections. So if you divide your answer of a product of length times height by two you will get the area of a triangle. It is often compared to slope but is not exactly the same. Area of section a 20 x 60 1200 sqft.

Make sure to document the number of chimneys skylights or other obstructions and include dormers in your measurements. To find the pitch of your roof you ll first. If you were to click on the peaks it wouldn t give you an accurate reading of your measurement. Position your ladder at the corner of one of your roof planes to determine the length.

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. The pitch is the steepness of the roof. Thus in a simple style house you ll only have to click on the corners.