Applications - applied on the roof (IMAGE) City University of Hong Kong Caption Application in a building envelope, with the white cooling ceramic applied on the roof. Credit City University of Hong Kong Usage Restrictions Image must be used with appropriate caption and credit. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.