Since you are just measuring floors, including windows and doorways should not matter. Include all areas involved in your project. For example, if you’re putting in flooring and have a walk-in closet you are also flooring, draw the closet. In this hypothetical drawing, there is a bathroom on the right (which is a separate room, so it is not drawn) and a bay window to the left (shown with a half circle).
Move any items or furniture in the way of your measuring tape. Having a friend hold the end of the tape could help. Right now, you are only measuring the main area. Ignore bay windows and separate areas like bathrooms for this step.
Write down the result in the recess area of your drawing. Repeat this step if there are multiple recesses in the room.
Record the number in the recess area of your drawing. Now you have the area of the U-shaped protrusion in the room. The area in a bay window recess should only be included as part of the area of the room if it has a floor (rather than a seat) and the ceiling is at least seven feet or 2. 13 m high.
A ceiling that slopes or has recesses or variation of any kind will have a larger surface area than the floor, so keep that in mind when buying materials (i. e. buy a little extra). Ceilings can be difficult to reach. If you are measuring a ceiling, ask a friend for assistance. You will probably need a ladder to reach the ceiling for measurement.
