diff --git a/src/blenderbim/blenderbim/bim/module/geometry/operator.py b/src/blenderbim/blenderbim/bim/module/geometry/operator.py
index 3d2be2b4d2..485ef7d77b 100644
--- a/src/blenderbim/blenderbim/bim/module/geometry/operator.py
+++ b/src/blenderbim/blenderbim/bim/module/geometry/operator.py
@@ -228,6 +228,8 @@ class SwitchRepresentation(bpy.types.Operator):
                 modifier = self.element_obj.modifiers.new("IfcOpeningElement", "BOOLEAN")
                 modifier.operation = "DIFFERENCE"
                 modifier.object = opening
+                modifier.solver = "EXACT"
+                modifier.use_self = True
         else:
             for modifier in self.element_obj.modifiers:
                 if modifier.type == "BOOLEAN" and "IfcOpeningElement" in modifier.name:
diff --git a/src/blenderbim/blenderbim/bim/module/void/operator.py b/src/blenderbim/blenderbim/bim/module/void/operator.py
index d859a87601..0a2d8ee319 100644
--- a/src/blenderbim/blenderbim/bim/module/void/operator.py
+++ b/src/blenderbim/blenderbim/bim/module/void/operator.py
@@ -55,6 +55,8 @@ class AddOpening(bpy.types.Operator):
             modifier = obj.modifiers.new("IfcOpeningElement", "BOOLEAN")
             modifier.operation = "DIFFERENCE"
             modifier.object = opening
+            modifier.solver = "EXACT"
+            modifier.use_self = True
         return {"FINISHED"}
 
 
diff --git a/src/blenderbim/demo-library.blend b/src/blenderbim/demo-library.blend
index 3660fbfc0f..06132f34b1 100644
Binary files a/src/blenderbim/demo-library.blend and b/src/blenderbim/demo-library.blend differ