How to Measure Cathedral Ceilings

A cathedral ceiling is a sloped ceiling with equal rise on all sides, often ending in a peak in the center of the room. These types of ceilings give an open feel to a floor plan and can make rooms look larger and feel more spacious. If you want to paint your cathedral ceiling, you'll need a measurement of surface area to determine how much paint you'll need for the entire ceiling.

Measuring tape

Instructions

- 1
  Divide the ceiling into individual triangles at the corner or each wall. Draw a picture of the ceiling and divide it into triangles that way if you need the visual aid.
- 2
  Measure the base and height of each triangle in the cathedral ceiling. Write down that measurement.
- 3
  Multiply each triangle's base by each height. Divide that number by two. For example, if the base is 12 and the height is 10, the equation will look like this: 12 x 10 = 120, 120 / 2 = 60. The final number is the area of each triangle.
- 4
  Add all the areas to get the surface area of the cathedral ceiling.

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