Abstract
Instances involving the delamination of bonded insulated roof panels have been encountered in practice, particularly within agricultural buildings. Attempts have been made to identify the causes of delamination by means of laboratory tests followed by shear strength measurements. Results indicate that temperature and moisture can reduce bond strength, depending on the panel type. Actual tests within a building have confirmed that the bond strength of such panels does decrease with time, possibly due to these factors. It is recommended that more data should be gathered on the likely long-term performance of sandwich core panels.
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