If lofted areas are desired, structural engineers are necessary to make sure that the loft is safe and structurally secure. They will determine the size and materials of framing required within a loft and how long beams need to be in order to support a second story loft space. Additionally, they will also choose secure methods for fastening the loft rafters to joists and top plates, giving it an extra layer of stability. Without these considerations, potential issues, such as collapse and shifting, can occur. To ensure the safety of both guests and workers alike, structural engineers must be involved when building a guest house.