The importance of insulation was recognized long time ago but only recently the significance of correct installation has become a concern. During our inspections we've found many houses with missing or misplaced insulation, incorrect coverage or, where clearance was required around recessed lights (downlights) more than required amount of insulation was removed - in some cases half or even whole batts missing.
All these imperfections in insulation coverage result in heat "leaks" in and out of the house - depending on the season.
A more technical collective name for these leaks is thermal bridging. In this article we will concentrate on most common and most significant issues and suggest the correct way to install in new, or fix in existing buildings.
So what is thermal bridging? It is the movement of heat across an object that is more conductive than the materials around it. Simply put, this more conductive material acts like a bridge allowing heat to pass between interior and exterior of the house. Thermal bridging can be avoided either by correct installation or by adding thermal breaks to slow down the transfer through thermal bridge. Here are some common examples of thermal bridging.