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Cupola Sizing
Selecting a Cupola Size

In selecting the right size cupola for a building, here is a good rule of thumb to
follow:  use 1.5 inches of cupola for every foot of unbroken roofline.  The key
here is the unbroken roofline measurement.  For example: if a roof section
measures 24 feet, the minimum cupola size should be approximately 36" square.  
For a more dramatic effect, or if a cupola is larger than 60" square is needed,
consider using two cupolas on the roofline.  When using more than one cupola per
roofline, here is a good rule of thumb to follow:  use 1 inch of cupola for every
foot of unbroken roofline.  For example: if a roof section measures 24 feet, the
minimum size of cupola should be approximately 24" square.
Cupola Size Chart for one cupola per roof line
Your roof line
Cupola Size
up to 12 feet
18" or larger
13 to 15 feet
22" or larger
16 to 18 feet
26" or larger
19 to 20 feet
30" or larger
21 to 24 feet
36" or larger
25 to 28 feet
42" or larger
29 to 32 feet
48" or larger
33 to 36 feet
54" or larger
over 36 feet
60" or 2 cupolas
Cupola Size Chart for two or more cupolas per roof line
Your roof line
Cupola's Size
up to 18 feet
18"
19 to 22 feet
22"
23 to 26 feet
26"
27 to 30 feet
30"
31 to 36 feet
36"
37 to 42 feet
42"
43 to 48 feet
48"
49 to 54 feet
54"
55 to 60 feet
60"
  • Cupola size is derived from the measurement of the base width
  • Extended bases are available for steeper pitched roofs
  • Cupolas come in 2 or 3 sections for easier shipping and installation
  • All louvered cupolas can provide ventilation for you structure
  • Windows are removable for ease of installing a light fixture
  • 60" & 72" cupolas come standard with double midsections