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What Size Cupola Will Fit My Building?

Kristin Zembower • Feb 07, 2022

Need help sizing your future cupola? Do it yourself with out easy formula!

Much like the name of our business, our cupolas are like beautiful, bronze crowns perched on top of a roof. Cupolas are a unique way of adding charm to your home, shed, or barn that will last a lifetime. The issue many people run into when considering adding a cupola is the question of “what cupola dimensions are right for my building?”


A good rule of thumb that we like to follow at Royal Crowne is to use 1.25 in. of cupola for every foot of unbroken roof. So, for example, if your roofline is 24 ft. long, your cupola would be 30 in. Some exceptions to this rule do exist.


If you have a longer building more than 48 ft. long, we suggest adding multiple cupolas to break up the space. One large cupola could potentially look clunky and out of place. Adding two separate cupolas is an option, but if you desire having only one cupola, we can make that happen.



cupola sizing chart

Another option of adding an extended base exists as well. If your roof is steeper than most, an extended base will allow for the cupola to be sturdy and fit perfectly. If an extended base is needed, Royal Crowne can custom fit a cupola to your liking.


At Royal Crowne, we want you to love your cupola. That is why we have many options regarding size, color, ventilation, and light. If you are still on the fence about what cupola you should purchase with us, head over to Cupola Sizing with RoyalVision on our Cupola Sizing page. Here, you can try out different cupolas on a model of your choice, and get a sense of what size and shape of cupola would look best on your roof.


If you are ready to add some character to your structure of choice, contact us to see what we can do for you. Even if you need a second opinion on cupola choice, feel free to talk to us. We want to make sure you get the perfect cupola to perfectly fit your home, shed, or barn.


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