diff --git a/resources/definitions/fdmprinter.def.json b/resources/definitions/fdmprinter.def.json
index 950c856a6e..303f06288e 100644
--- a/resources/definitions/fdmprinter.def.json
+++ b/resources/definitions/fdmprinter.def.json
@@ -2365,10 +2365,10 @@
                     "enabled": "support_enable",
                     "settable_per_mesh": true
                 },
-                "support_roof_height":
+                "support_interface_height":
                 {
-                    "label": "Support Roof Thickness",
-                    "description": "The thickness of the support roofs.",
+                    "label": "Support Interface Thickness",
+                    "description": "The thickness of the interface of the support where it touches with the model on the bottom or the top.",
                     "unit": "mm",
                     "type": "float",
                     "default_value": 1,
@@ -2376,7 +2376,38 @@
                     "global_inherits_stack": "support_extruder_nr",
                     "maximum_value_warning": "10",
                     "enabled": "support_roof_enable and support_enable",
-                    "settable_per_mesh": true
+                    "settable_per_mesh": true,
+                    "children":
+                    {
+                        "support_roof_height":
+                        {
+                            "label": "Support Roof Thickness",
+                            "description": "The thickness of the support roofs. This controls the amount of dense layers at the top of the support on which the model rests.",
+                            "unit": "mm",
+                            "type": "float",
+                            "default_value": 1,
+                            "value": "support_interface_height",
+                            "minimum_value": "0",
+                            "global_inherits_stack": "support_extruder_nr",
+                            "maximum_value_warning": "10",
+                            "enabled": "support_roof_enable and support_enable",
+                            "settable_per_mesh": true
+                        },
+                        "support_bottom_height":
+                        {
+                            "label": "Support Bottom Thickness",
+                            "description": "The thickness of the support bottoms. This controls the number of dense layers are printed on top of places of a model on which support rests.",
+                            "unit": "mm",
+                            "type": "float",
+                            "default_value": 1,
+                            "value": "support_interface_height",
+                            "minimum_value": "0",
+                            "global_inherits_stack": "support_extruder_nr",
+                            "maximum_value_warning": "10",
+                            "enabled": "support_roof_enable and support_enable",
+                            "settable_per_mesh": true
+                        }
+                    }
                 },
                 "support_roof_density":
                 {