WHAT IS THERMAL BRIDGING?
Thermal bridges are junctions in a building envelope where there is a gap in the insulation, causing heat loss. The main thermal bridges in a home are found where walls meet floors, other walls, roofs and where they intersect with doorways and windows. In the illustration above, red denotes the places where there is thermal bridging. On the left is a traditional stickframe home. Because the insulation is broken regularly by the studs, there is plenty of thermal bridging in this typical home. On the right is a timber frame wall with structural insulated panels (SIPs) on the outside of the frame. It not only provides better insulation, but also prevents most thermal bridging.