hoone piirdetarindi osa, kus muidu ühtlaselt väike soojusläbivus on lokaalselt suurem soojustuse katkestuse, materjalist suurema soojuserijuhtivusega materjali läbiviigu, piirdetarindi geomeetria muut, part of the building envelope where the otherwise uniform thermal resistance is significantly changed by full or partial penetration of the building envelope by materials with a different thermal cond, a localised area of the building envelope where the heat flow is different (usually increased) in comparison with adjacent areas (if there is a difference in temperature between the inside and the out, a component, assembly or area of the building envelope that has noticeably higher thermal conductivity than the surrounding area of a house's structure, allowing heat to transfer more easily in and ou