For reasons of design or budget, some people choose not to have their house designed as a complete timber frame. A hybrid design could be a great room that is timber framed, or just the ceiling of the great room timber framed. One wing or ell of your house can be timber framed. You might decide to timber frame the first floor of your house and stick frame the upper floor. Hybrid designs can also mean the use of a timber frame for part of your house and structural stress skin panels for another part of the house. Structural panels do not require a timber frame. We have also designed houses using structural stress skin panels to reduce the amount of timber frame roof rafters.