Post-frame is an energy-efficient building method and its primary material, wood, is a renewable resource that is widely available and sustainably harvested throughout North America. Wood is strong and innovations in engineered wood products allow it to be used for longer spans and taller structures than ever before.
The widely spaced, relatively thick wood side and end wall posts minimize the number of thermal breaks and minimize the thermal bridging effect in post-frame buildings. Wood is a good insulator, thereby reducing heat transfer at the widely spaced thermal breaks in post-frame systems. Condensation accumulation on the inside wall surfaces at thermal breaks is practically eliminated in post-frame buildings.
Where newer energy codes require higher levels of insulation, post frame is a particularly good option because its walls and roofs are relatively easy to insulate. Its wide column spacing allows for continuous insulation between structural elements, fewer interruptions in insulation material, and less chance of thermal leakage. Where the insulation is interrupted, wooden structural members have natural insulating properties and conduct less heat than most structural steel or masonry components. Post-frame buildings feature an exceptionally large built-in wall cavity for ample insulation, thereby lowering heating and cooling costs throughout the year.