Title: THERMAL BRIDGES IN WALL CONSTRUCTION - NCMA
Headings: THERMAL BRIDGES IN WALL CONSTRUCTION
THERMAL BRIDGES IN WALL CONSTRUCTION
INTRODUCTION
THERMAL BRIDGING
Causes
Effects
Requirements
SINGLE WYTHE MASONRY WALL
CONCRETE MASONRY CAVITY WALL
MASONRY VENEER WITH STEEL STUD BACKUP
SLAB EDGE & PERIMETER BEAM
MASONRY PARAPET
References

Content: THERMAL BRIDGES IN WALL CONSTRUCTION - NCMA
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THERMAL BRIDGES IN WALL CONSTRUCTION
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INTRODUCTION
Thermal bridging occurs when a relatively small area of a wall, floor or roof loses much more heat than the surrounding area. Thermal bridging can occur in any type of building construction. The effects of thermal bridging may include increased heat loss, occupant discomfort, unanticipated expansion/contraction, condensation, freeze-thaw damage, and related moisture and/or mold problems for materials susceptible to moisture. The severity of the thermal bridge is determined by the extent of these effects. Thermal bridges, and the subsequent damage, can be avoided by several strategies which are best implemented during the design stage, when changes can be easily incorporated. After construction, repairing thermal bridges can be both costly and difficult. THERMAL BRIDGING
A thermal bridge allows heat to “short circuit” insulation. Typically, this occurs when a material of high thermal conductivity, such as steel framing or concrete, penetrates or interrupts a layer of low thermal conductivity material, such as insulation. Thermal bridges can also occur where building elements are joined, such as exposed concrete floor slabs and beams that abut or penetrate the exterior walls of a building.