diff --git a/src/geometry/roof.test.ts b/src/geometry/roof.test.ts
index ebbcaae..3cb2cf2 100644
--- a/src/geometry/roof.test.ts
+++ b/src/geometry/roof.test.ts
@@ -154,4 +154,30 @@ describe("roofGeometry — Überstand", () => {
     const bb = roofBBox(g.eaves);
     expect(bb).toEqual({ x0: -0.5, y0: -0.5, x1: 6.5, y1: 4.5 });
   });
+
+  it("getrennter Traufe/Ortgang-Überstand: First entlang X -> Ortgang weitet X, Traufe Y", () => {
+    // ridgeAxis "x": First entlang X -> Ortgang (Giebel) an den X-Enden,
+    // Traufe an den Y-Seiten. overhang(Traufe)=0.3, overhangGable(Ortgang)=0.8.
+    const g = roofGeometry(
+      roof({ shape: "sattel", ridgeAxis: "x", overhang: 0.3, overhangGable: 0.8 }),
+      E,
+    );
+    const bb = roofBBox(g.eaves);
+    expect(bb).toEqual({ x0: -0.8, y0: -0.3, x1: 6.8, y1: 4.3 });
+  });
+
+  it("getrennter Überstand: First entlang Y -> Ortgang weitet Y, Traufe X", () => {
+    const g = roofGeometry(
+      roof({ shape: "sattel", ridgeAxis: "y", overhang: 0.3, overhangGable: 0.8 }),
+      E,
+    );
+    const bb = roofBBox(g.eaves);
+    expect(bb).toEqual({ x0: -0.3, y0: -0.8, x1: 6.3, y1: 4.8 });
+  });
+
+  it("overhangGable fehlt -> ringsum gleich overhang (rückwärtskompatibel)", () => {
+    const g = roofGeometry(roof({ shape: "sattel", overhang: 0.4 }), E);
+    const bb = roofBBox(g.eaves);
+    expect(bb).toEqual({ x0: -0.4, y0: -0.4, x1: 6.4, y1: 4.4 });
+  });
 });
diff --git a/src/geometry/roof.ts b/src/geometry/roof.ts
index 5a49624..722ec79 100644
--- a/src/geometry/roof.ts
+++ b/src/geometry/roof.ts
@@ -336,11 +336,16 @@ const swapLine = (l: [Vec2, Vec2]): [Vec2, Vec2] => [swap2(l[0]), swap2(l[1])];
  */
 export function roofGeometry(roof: Roof, eavesZ: number): RoofGeometry {
   const bb = roofBBox(roof.outline);
-  const o = Math.max(0, roof.overhang);
-  let x0 = bb.x0 - o;
-  let y0 = bb.y0 - o;
-  let x1 = bb.x1 + o;
-  let y1 = bb.y1 + o;
+  const oe = Math.max(0, roof.overhang); // Traufüberstand (senkrecht zum First)
+  const og = Math.max(0, roof.overhangGable ?? roof.overhang); // Ortgang (entlang First)
+  // Der First liegt entlang der `ridgeAxis`-Achse: dort wirkt der Ortgang-, quer
+  // dazu der Traufüberstand. In OUTLINE-Koordinaten je nach Firstrichtung mappen.
+  const ox = roof.ridgeAxis === "x" ? og : oe;
+  const oy = roof.ridgeAxis === "x" ? oe : og;
+  let x0 = bb.x0 - ox;
+  let y0 = bb.y0 - oy;
+  let x1 = bb.x1 + ox;
+  let y1 = bb.y1 + oy;
   const flip = roof.ridgeAxis === "y";
   if (flip) {
     [x0, y0, x1, y1] = [y0, x0, y1, x1];
diff --git a/src/i18n/de.ts b/src/i18n/de.ts
index fc83917..5974b09 100644
--- a/src/i18n/de.ts
+++ b/src/i18n/de.ts
@@ -309,7 +309,8 @@ export const de = {
   "objinfo.roof.mansardKnee": "Knicklage (% Spannweite)",
   "objinfo.roof.width": "Breite (m)",
   "objinfo.roof.depth": "Tiefe (m)",
-  "objinfo.roof.overhang": "Überstand (m)",
+  "objinfo.roof.overhang": "Überstand Traufe (m)",
+  "objinfo.roof.overhangGable": "Überstand Ortgang (m)",
   "objinfo.roof.thickness": "Dachdicke (m)",
   "objinfo.roof.baseElevation": "Traufhöhe (m)",
   "objinfo.roof.ridgeHeight": "Firsthöhe",
diff --git a/src/i18n/en.ts b/src/i18n/en.ts
index 59a8aaa..9c7f5bb 100644
--- a/src/i18n/en.ts
+++ b/src/i18n/en.ts
@@ -308,7 +308,8 @@ export const en: Record<TranslationKey, string> = {
   "objinfo.roof.mansardKnee": "Knee position (% span)",
   "objinfo.roof.width": "Width (m)",
   "objinfo.roof.depth": "Depth (m)",
-  "objinfo.roof.overhang": "Overhang (m)",
+  "objinfo.roof.overhang": "Eaves overhang (m)",
+  "objinfo.roof.overhangGable": "Rake overhang (m)",
   "objinfo.roof.thickness": "Roof thickness (m)",
   "objinfo.roof.baseElevation": "Eaves height (m)",
   "objinfo.roof.ridgeHeight": "Ridge height",
diff --git a/src/model/types.ts b/src/model/types.ts
index 49eb836..2e99853 100644
--- a/src/model/types.ts
+++ b/src/model/types.ts
@@ -1062,8 +1062,13 @@ export interface Roof {
    * gemessen von der Traufe. Kleiner ⇒ steiler Sockel kürzer; fehlt ⇒ 0.4.
    */
   mansardKneeRatio?: number;
-  /** Dachüberstand an der Traufe (Meter, ringsum); 0 = bündig mit dem Umriss. */
+  /** Dachüberstand an der TRAUFE (Meter, senkrecht zum First); 0 = bündig. */
   overhang: number;
+  /**
+   * Dachüberstand am ORTGANG (Giebelseite, entlang des Firsts, Meter). Fehlt ⇒
+   * gleich dem Traufüberstand {@link overhang} (rückwärtskompatibel = ringsum).
+   */
+  overhangGable?: number;
   /** Firstrichtung (Sattel/Walm/Mansarde/Pult): entlang der X- oder Y-Achse. */
   ridgeAxis: "x" | "y";
   /** Traufhöhe (absolutes Z, Meter); fehlt ⇒ Oberkante des Geschosses. */
diff --git a/src/panels/ObjectInfoPanel.tsx b/src/panels/ObjectInfoPanel.tsx
index ac7652f..7d57185 100644
--- a/src/panels/ObjectInfoPanel.tsx
+++ b/src/panels/ObjectInfoPanel.tsx
@@ -577,10 +577,18 @@ export function RoofSection({
         });
       })}
 
-      {/* Überstand + Dicke (Meter). */}
+      {/* Überstand: Traufe (senkrecht zum First) + Ortgang (Giebelseite). */}
       {numField("objinfo.roof.overhang", roof.overhang, 0.05, (v) =>
         host.onSetRoofPatch({ overhang: Math.max(0, v) }),
       )}
+      {roof.shape !== "flach" &&
+        roof.shape !== "zelt" &&
+        numField(
+          "objinfo.roof.overhangGable",
+          roof.overhangGable ?? roof.overhang,
+          0.05,
+          (v) => host.onSetRoofPatch({ overhangGable: Math.max(0, v) }),
+        )}
       {numField("objinfo.roof.thickness", roof.thickness, 0.02, (v) =>
         host.onSetRoofPatch({ thickness: Math.max(0.01, v) }),
       )}
diff --git a/src/state/selectionInfo.ts b/src/state/selectionInfo.ts
index 6096a6a..98edc48 100644
--- a/src/state/selectionInfo.ts
+++ b/src/state/selectionInfo.ts
@@ -88,6 +88,8 @@ export interface RoofInfo {
   mansardKneeRatio?: number;
   /** Dachüberstand an der Traufe (Meter). */
   overhang: number;
+  /** Dachüberstand am Ortgang (Giebelseite, Meter); fehlt ⇒ = Traufüberstand. */
+  overhangGable?: number;
   /** Firstrichtung entlang X oder Y. */
   ridgeAxis: "x" | "y";
   /** Dachdicke (Meter). */
@@ -636,6 +638,7 @@ function roofSelection(project: Project, roof: Roof): Selection {
     mansardType: roof.mansardType,
     mansardKneeRatio: roof.mansardKneeRatio,
     overhang: roof.overhang,
+    overhangGable: roof.overhangGable,
     ridgeAxis: roof.ridgeAxis,
     thickness: roof.thickness,
     baseElevation: eavesZ,