A material that bridges between the warm interior and the cold exterior is called a THERMAL BRIDGE.

Common thermal bridges:

• Plates - top and bottom plates, mud sills /sill plates
• Studs - corners, jacks, metal studs on exteriors
• Rafters - especially at top plates
• Plywood subfloor
• Beams
• Metal flashing

Thermal bridging becomes more pronounced when a building is tightly sealed and super insulated.