diff --git a/src/bonsai/bonsai/bim/module/model/door.py b/src/bonsai/bonsai/bim/module/model/door.py
index 18e8b90f84..1d53a2c279 100644
--- a/src/bonsai/bonsai/bim/module/model/door.py
+++ b/src/bonsai/bonsai/bim/module/model/door.py
@@ -640,6 +640,7 @@ class EnableEditingDoor(bpy.types.Operator, tool.Ifc.Operator):
         data = json.loads(ifcopenshell.util.element.get_pset(element, "BBIM_Door", "Data"))
         data.update(data.pop("lining_properties"))
         data.update(data.pop("panel_properties"))
+        data.update(tool.Model.get_constituents_props_data(element))
 
         # required since we could load pset from .ifc and BIMDoorProperties won't be set
         props.set_props_kwargs_from_ifc_data(data)
diff --git a/src/bonsai/bonsai/bim/module/model/prop.py b/src/bonsai/bonsai/bim/module/model/prop.py
index d02adfcf8d..8c438a384f 100644
--- a/src/bonsai/bonsai/bim/module/model/prop.py
+++ b/src/bonsai/bonsai/bim/module/model/prop.py
@@ -491,7 +491,13 @@ WindowType = Literal[
 
 # default prop values are in mm and converted later
 class BIMWindowProperties(PropertyGroup):
-    non_si_units_props = ("is_editing", "window_type")
+    non_si_units_props = (
+        "is_editing",
+        "window_type",
+        "lining_material",
+        "framing_material",
+        "glazing_material",
+    )
 
     # number of panels and default mullion/transom values
     # fmt: off
@@ -690,7 +696,14 @@ DoorType = Literal[
 
 
 class BIMDoorProperties(PropertyGroup):
-    non_si_units_props = ("is_editing", "door_type", "panel_width_ratio")
+    non_si_units_props = (
+        "is_editing",
+        "door_type",
+        "panel_width_ratio",
+        "lining_material",
+        "framing_material",
+        "glazing_material",
+    )
     is_editing: bpy.props.BoolProperty(default=False)
     door_type: bpy.props.EnumProperty(
         name="Door Operation Type",
diff --git a/src/bonsai/bonsai/bim/module/model/window.py b/src/bonsai/bonsai/bim/module/model/window.py
index 41b767d111..a2ef7507f3 100644
--- a/src/bonsai/bonsai/bim/module/model/window.py
+++ b/src/bonsai/bonsai/bim/module/model/window.py
@@ -550,6 +550,7 @@ class EnableEditingWindow(bpy.types.Operator, tool.Ifc.Operator):
         data = json.loads(ifcopenshell.util.element.get_pset(element, "BBIM_Window", "Data"))
         data.update(data.pop("lining_properties"))
         data.update(data.pop("panel_properties"))
+        data.update(tool.Model.get_constituents_props_data(element))
 
         # required since we could load pset from .ifc and BIMWindowProperties won't be set
         props.set_props_kwargs_from_ifc_data(data)
diff --git a/src/bonsai/bonsai/tool/model.py b/src/bonsai/bonsai/tool/model.py
index e7fa36358b..d8f986f48c 100644
--- a/src/bonsai/bonsai/tool/model.py
+++ b/src/bonsai/bonsai/tool/model.py
@@ -133,6 +133,19 @@ class Model(bonsai.core.tool.Model):
                 data[prop_name] = prop_value * si_conversion
         return data
 
+    @classmethod
+    def get_constituents_props_data(cls, element: ifcopenshell.entity_instance) -> dict[str, str]:
+        constituents = ("lining", "framing", "glazing")
+        props: dict[str, str] = {f"{constituent}_material": "0" for constituent in constituents}
+        material = ifcopenshell.util.element.get_material(element)
+        if not material or not material.is_a("IfcMaterialConstituentSet"):
+            return props
+        for constituent in material.MaterialConstituents:
+            name = (constituent.Name or "").lower()
+            if name in constituents:
+                props[f"{name}_material"] = str(constituent.Material.id())
+        return props
+
     @classmethod
     def convert_mesh_to_curve(
         cls, position: Matrix, edge_indices: list[tuple[int, int]]