Sizing Roof Cupolas

You ll notice that all cupola sizes are rounded up to the next size.

Sizing roof cupolas.

Size of our cupolas refers to the measurement across the bottom of the cupola s roof. Extended cupola bases can be added for steeper pitch roofs. Pitch is determined by the number of inches your roof rises vertically for every 12 inches it extends horizontally. Please see the examples below.

The length or width of the weathervane should not exceed the widest part of the cupola. A 30 cupola is properly sized but a 36 model looks very good too. How to choose the right size cupola. A good rule of thumb for selecting the right size cupola is to use 1 0 1 25 of cupola for every foot of unbroken roofline the key is the unbroken roofline measurement.

Most standard or small finials will fit all full size cupolas. In other words from the peak of your roof measure 12 inches out then measure down until you meet the slope of your roof. One diagram shows a 24 cupola which appears too small. A minimum of 1 25 of cupola for every foot of unbroken roof ridge line.

Our windowed cupolas can be used for. When you have a cupola over 42 at the base you should be sure to choose a large enough weathervane or finial to not get lost in the size of the cupola. How to size a cupola when sizing a cupola you must consider pitch width and height. A general sizing suggestion is a minimum of 1 25 of cupola for every foot of unbroken roof ridge line.

13 ridge height 20 ridge length x 7 23 1 use a cupola with a 24 or larger base. Our louvered cupolas provide ventilation when needed. Our cupolas are manufactured in 2 3 sections for ease of handling and installation. Cupolas are usually sold in sizes with 2 4 or 6 increments.

If you are considering 2 cupolas a good rule of thumb is to use 1 of cupola for every foot of unbroken roofline measurement. Most full size weathervanes are compatible with all full size cupolas. In this case of a 24 long building the recommended size of cupola would be 30 or greater. For 2 or 3 cupolas use 1 5 and for 4 or more cupolas use 1 75.

For a 20 wide x 20 long garage with no roof overhangs 8 side walls and a 6 12 roof pitch. Cupola for a 24ft garage fora 24 long building the recommended size of cupola would be 36 or greater.