The water absorption characteristics of eight thermal insulation materials have been determined using three different laboratory test methods. The results from this study have been compared with field results from an 18-month below grade perimeter exposure study. It was concluded that moisture gain in perimeter insulation cannot be predicted accurately by any one laboratory test. A relative assessment of performance is possible from the results of a combina tion of laboratory test methods.
Bomberg, M., "Laboratory Methods for Determining Moisture Absorption of Thermal Insulation I: Review," Journal of Thermal Insulation, Vol. 6, No. 4, p. 232 (April 1983).
2.
Ovstaas, G., Smith, S., Strzepek, W. and Titley, G., "Thermal Performance of Various Insulations on Below-Grade Perimeter Applications," ASTM, STP789, pp. 435-454 (1983).
