diff --git a/src/components/survey-sale/detail/RoofForm.tsx b/src/components/survey-sale/detail/RoofForm.tsx
index 553acf2..33aded8 100644
--- a/src/components/survey-sale/detail/RoofForm.tsx
+++ b/src/components/survey-sale/detail/RoofForm.tsx
@@ -401,6 +401,7 @@ const RadioSelected = ({
   const [etcChecked, setEtcChecked] = useState<boolean>(Boolean(etcValue))
 
   const selectedId =
+  /** 누수 흔적 boolean 타입이므로 number 타입으로 변환 - 값이 없을 경우 2(없음) 으로 초기화*/
     column === 'leakTrace' ? Number(detailInfoData?.[column as keyof SurveyDetailInfo]) || 2 : detailInfoData?.[column as keyof SurveyDetailInfo]
 
   const isSpecialColumn = column === 'rafterDirection' || column === 'leakTrace' || column === 'insulationPresence'