diff --git a/src/hooks/module/useModuleBasicSetting.js b/src/hooks/module/useModuleBasicSetting.js
index d95cf077..2915b548 100644
--- a/src/hooks/module/useModuleBasicSetting.js
+++ b/src/hooks/module/useModuleBasicSetting.js
@@ -133,7 +133,7 @@ export function useModuleBasicSetting(tabNum) {
                 const offsetObjects = moduleSelectionData.roofConstructions.find((item) => item.addRoof.index === roofIndex)
 
                 roof.lines.forEach((line) => {
-                  line.attributes = { ...line.attributes, offset: getOffset(offsetObjects.addRoof, line.attributes.type, roof.pitch, roof.from) }
+                  line.attributes = { ...line.attributes, offset: getOffset(offsetObjects.addRoof, line, roof.pitch, roof.from) }
                 })
                 //배치면 설치 영역
                 makeModuleInstArea(roof, detail)
@@ -167,7 +167,7 @@ export function useModuleBasicSetting(tabNum) {
     }
   }
 
-  const getOffset = (data, type, pitch, from = '') => {
+  const getOffset = (data, line, pitch, from = '') => {
     const degree = getDegreeByChon(pitch) //각도
 
     // 계산 값
@@ -185,15 +185,24 @@ export function useModuleBasicSetting(tabNum) {
       return numerator / denominator
     }
 
+    const point1 = { x: line.x1, y: line.y1 }
+    const point2 = { x: line.x2, y: line.y2 }
+    let isDiagonal = false // 대각선 있는지 확인
+
+    const angle = calculateAngle(point1, point2) //선의 각도 계산
+    if (!(Math.abs(angle) === 0 || Math.abs(angle) === 180 || Math.abs(angle) === 90)) {
+      isDiagonal = true
+    }
+
     //경사 신장률은 1 / cos쎄타
     const calculateHeightRate = 1 / Math.cos((degree * Math.PI) / 180)
     const calculateValue = calculateHeightRate / calculateExpression(degree)
 
     const eavesResult = from === 'roofCover' ? (data.eavesMargin * Math.cos((degree * Math.PI) / 180)) / 10 : data.eavesMargin / 10
     const ridgeResult = from === 'roofCover' ? (data.ridgeMargin * Math.cos((degree * Math.PI) / 180)) / 10 : data.ridgeMargin / 10
-    const kerabaMargin = from === 'roofCover' ? data.kerabaMargin / calculateValue / 10 : data.kerabaMargin / 10
+    const kerabaMargin = from === 'roofCover' && isDiagonal ? data.kerabaMargin / calculateValue / 10 : data.kerabaMargin / 10
 
-    switch (type) {
+    switch (line.attributes.type) {
       case LINE_TYPE.WALLLINE.EAVES:
         return eavesResult
       case LINE_TYPE.WALLLINE.GABLE: