We have developed a method for measuring R-values for large areas of building envelopes with thermography and contact sensors. The technique entails locating thermal extremes on a building surface with thermography. Contact sensors determine the R-values at these locations. A thermographic map provides the basis from which to interpolate R-values for all other locations within the area surveyed. This paper explains the interpolation technique we employed and demonstrates some of the difficulties of the method. Further experience will define the limitations of the technique more fully.

Date Published: 12 March 1982
PDF: 9 pages
Proc. SPIE 0313, Thermal Infrared Sensing Applied to Energy Conservation in Building Envelopes, (12 March 1982); doi: 10.1117/12.932894

Published in SPIE Proceedings Vol. 0313:
Thermal Infrared Sensing Applied to Energy Conservation in Building Envelopes
Richard A. Grot; James T. Wood, Editor(s)