Selecting Cupola Size

Finding the Correct Cupola Size
A good formula to use when choosing your cupola is to use: 1.5 inches of cupola for every foot of unbroken roofline. For instance if a portion of the roof measures 24 feet, then the minimum amount of cupola size would be 36 inches square
For a more dynamic look or if you need a cupola larger than 60" square, try using two cupolas on the roof top. If using more than one cupola on same roofline, use the formula: 1 inch of cupola for every foot of unbroken roofline. See picture ----> For example, this roofline measures 24 feet and the minimum required cupola size would be 24 inches square.
This chart shows the size relationship of the Cupolas in either wood or vinyl. This is just a helpful aid when determining size


Size Chart for One Cupola Per Roofline
Your Roof Line	Cupola Size	Your Roof Line	Cupola Size
up to 12 feet	18 inches or larger	25 to 28 feet	42 inches or larger
13 to 15 feet	22 inches or larger	29 to 32 feet	48 inches or larger
16 to 18 feet	26 inches or larger	33 to 36 feet	54 inches or larger
21 to 24 feet	36 inches or larger	over 36 feet	60 inches or 2 cupolas

Size Chart for Two or More Cupolas Per Roofline
Your Roof Line	Cupola Size	Your Roof Line	Cupola Size
up to 18 feet	18 inches	37 to 42 feet	42 inches
19 to 22 feet	22 inches	43 to 48 feet	48 inches
23 to 26 feet	26 inches	49 to 54 feet	54 inches
27 to 30 feet	30 inches	55 to 60 feet	60 inches*
31 to 36 feet	36 inches	* For rooflines greater than 60 feet, additional cupolas may be added