Integrity of the tile finish on existing buildings is usually evaluated by the investigation of the exfoliation area and bond strength test. However, exfoliation sometimes occur again within the wall evaluated healthy by investigation. Therefore, we propose a method to assess the possibility of future exfoliation by measurement of the strain of existing wall tiles. The strain can be measured by strain gauges were affixed to the surface of the tile to be stripped. The results of the indoor and outdoor environmental test have confirmed that strain in bonded tiles can be estimated by the proposed test method.
