diff --git a/resources/definitions/fdmprinter.def.json b/resources/definitions/fdmprinter.def.json
index e633017431..e8310a540a 100644
--- a/resources/definitions/fdmprinter.def.json
+++ b/resources/definitions/fdmprinter.def.json
@@ -1542,6 +1542,19 @@
                             "enabled": "roofing_pattern != 'concentric' and roofing_layer_count > 0 and top_layers > 0",
                             "limit_to_extruder": "roofing_extruder_nr",
                             "settable_per_mesh": true
+                        },
+                        "roofing_extension":
+                        {
+                            "label": "Top Surface Extension",
+                            "description": "Determines how much the top surfaces are extended beneath overlapping surfaces. By adjusting this value, you can ensure that the outer edges of the top surfaces are concealed by the layers above, resulting in a better visual quality, particularly for models with curved surfaces.",
+                            "type": "float",
+                            "default_value": "0",
+                            "value": "0",
+                            "minimum_value": "0",
+                            "maximum_value_warning": "roofing_line_width * 10",
+                            "enabled": "roofing_layer_count > 0 and top_layers > 0",
+                            "limit_to_extruder": "roofing_extruder_nr",
+                            "settable_per_mesh": true
                         }
                     }
                 },
diff --git a/resources/setting_visibility/expert.cfg b/resources/setting_visibility/expert.cfg
index 1aaa6f999e..8f07f7a2f9 100644
--- a/resources/setting_visibility/expert.cfg
+++ b/resources/setting_visibility/expert.cfg
@@ -49,6 +49,7 @@ z_seam_corner
 z_seam_relative
 
 [top_bottom]
+roofing_extension
 roofing_layer_count
 flooring_layer_count
 top_bottom_extruder_nr