Selecting Your Cupola


Take a few moments to review the information presented here to help you select the right cupola. Cupolas and weathervanes make great-looking additions to homes and other buildings. Cupolas can be used for ventilation or can just be a decorative accent.

In selecting the right size cupola for your building, a good rule of thumb is 1.5" of cupola for every foot of unbroken roof line. The key idea here is the unbroken roof line measurement (see charts below)

For Example: if a roof section measures 24', the minimum cupola size should be approximately 36 inches square. For a more dramatic effect, or if a cupola 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" of cupola for every foot of unbroken roofline (see chart below). For example: if a roof section measures 24 feet, the minimum size of each cupola should be approximately 24 inches square.

A quick and easy way to visualize what is best for you is to position a cardboard box of similar size to the recommended cupola on your roof and then view it from the ground. We suggest walking around the house and viewing it from various angles.

This chart illustrates the size relationship of the Vinyl & Wood and Cupolas.
Use this chart as an aid to select the cupola size that is right for you.
Vinyl and Wood Cupola Sizes
Cupola Size Chart for one cupola per roof line
Your Roof Line
Cupolas Size
Your Roof Line
Cupolas 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
19 to 20 feet
30 inches or larger
over 36 feet
60 inches or 2 cupolas
21 to 24 feet
36 inches or larger
Cupola Size Chart for two or more cupolas per roof line

Your Roof Line

Cupolas Size
Your Roof Line
Cupolas 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

All of our cupolas are "weathervane ready". They do not require a roof mount or any additional hardware. You will only need a hand saw, a screwdriver and silicone caulk! Complete, easy step-by-step instructions are included.

Vinyl & Wood Cupolas: Our cupolas are designed for a roof pitch up to 10" rise per foot (10/12 pitch)- most roofs are not steeper than this. If, however, your pitch is steeper than 10" rise per foot, you will have to include an extended base in your order. If an extended base is needed, please call us at 1-800-237-7470 prior to placing your order.

Cupola Notes

  • Made from hand selected Northern White Pine or solid PVC vinyl.
  • Topped with 16-ounce 24-gauge copper.
  • All cupolas come in three sections for easy installation and delivery.
  • Easy step-by-step installation instructions are included with each cupola.
  • All cupolas come in bare wood and are ready for painting or staining.
  • The smooth base of all 30" cupolas or larger are built out of Marine Ply, a high quality Douglas fir panel.
  • All 36" and larger cupolas must ship via motor freight.
  • Cupola size is derived from the measurement of the roof's edge.
  • All cupolas are "weathervane ready". No roof mount or additional hardware is needed.
  • Weathervanes are purchased seperately.


Accent Building Products,
46 Gettysburg Street, P.O. Box 310 Arendtsville, Pa 17303,
Phone: 1-800-237-7470

Copyright @ 1998 - 2019: Accent Building Products - All rights reserved.