- Author
-
Berthier, J.
- Title
- Weak Thermal Points or Thermal Bridges. Final Report. Building Research Translation.
- Coporate
- National Bureau of Standards, Washington, DC
- Report
-
NBS TN 710-7
May 1973
- Distribution
- Available from National Technical Information Service
- Keywords
-
walls, thermal degradation; surface temperature; variability; thermal conductivity; insulation; construction; construction materials; translations; France
|
thermal conductivity
|
thermal degradation
- Identifiers
- thermal bridges
- Abstract
- Uniformity of temperature on the internal face is one of the essential hygro-thermal qualities for a wall. Cold bridges, which are the cause of uneven temperatures, constitute a weakness which ought to be corrected. The report describes a large number of tests carried out with various types of wall (dense walls and lightweight panels) in order to assess the importance of cold bridges and to determine the effectiveness of possible remedies; he shows that the accepted theory used in the calculation of U-coefficients is unsatisfactory when estimating surface temperatures. The results obtained can be explained, however, by means of two simple hypotheses; on the basis of these there are practical rules which can be used in establishing the importance of cold bridges, and recommendations for reducing them. (Author)