No, but we strongly recommend it if you intend to use your cabin all year-round or live in a colder climate. We recommend insulating the floor and roof for small and mid-size cabins. For larger cabins, we also offer factory-made insulation kits. Whichever one you choose, we guarantee it’s easy to install and will make your cabin comfortable and warm. The Buyer’s Guide on our website includes all the information needed for this step.