The Wall Weak Spots That Let Heat Slip Through
A wall may contain thick insulation and still lose more heat than expected. The problem is often not the insulation itself. Heat can travel around it through studs, plates, headers, fasteners, and other solid parts of the wall. This movement is called thermal bridging. It can reduce comfort, raise heating or cooling needs, and create colder interior surfaces. Understanding it helps explain why the insulation value printed on a package does not describe the performance of an entire wall.