One of the first questions asked by our customers is "what size weathervane do I need"? "I don't want it to be too small or dominating my cupola". Can you advise us? Yes, we will be happy to assist you on this very important aspect of the project. There is a general rule that answers this question being for every foot of roofline an equal sum in inches is required plus a few extra. As an example, a 24-foot, two car garage would be well served with a 24" weathervane plus or minus depending on the design of the weathervane figure. Other considerations when determining scale size include the height of the building, roofline segment, and intended placement of the weathervane. Additionally, your situation may involve installing to an existing or brand-new cupola. In this instance we will require dimensions of the cupola and ideally a schematic of the cupola, in order to provide the best scaled drawing illustration. We can help you determine the correct scale or revise the illustration for optimal results.