Abstract: A closure, such as a door or window unit, and a joint for such a closure are provided. The closure has an inside and an outside, and includes a plurality of first frame members alternately joined to a plurality of second frame members to form a planar frame, and a panel member is positioned within the frame. The joint, formed at each location where a first frame member abuts a second frame member, includes an end area of a first frame member, a mating area of a second frame member and a sealing member. The sealing member is disposed at the interface defined between the end area and the mating area to establish a weather-resistant barrier between the inside and the outside of the closure. A method for fabricating a closure is also provided.