08. %EA%B8%B0%EC%A1%B4 %EA%B1%B4%EB%AC%BC%EC%97%90%EC%84%9C%EC%9D%98 %EC%97%B4%EA%B5%90%EC%99%80 %EA%B8%B0%EB%B0%80%EC%84%B1%EB%8A%A5 %EA%B0%9C%EC%84%A0 %28Improving thermal bridges and airtightness in existing buildings%29