An attic truss is a support feature found in many home or building attics. This truss structure functions as holding up the roof of the home or building and helps the roof resist lateral stresses from wind, snow loads, and debris. A home is likely to have a series of attic truss supports running the length of the building. The two most common types are king trusses and queen trusses. These two designs can be used independently or in conjunction with each other. The queen attic truss system is often used to transform an attic space from a simple storage unit into a usable living space by freeing up space in the center of the attic. King trusses are generally used for smaller roofs, or they are used on top of a queen truss.