diff --git a/src/blenderbim/blenderbim/bim/module/debug/__init__.py b/src/blenderbim/blenderbim/bim/module/debug/__init__.py
index 74bfcc9b07..c7acae629d 100644
--- a/src/blenderbim/blenderbim/bim/module/debug/__init__.py
+++ b/src/blenderbim/blenderbim/bim/module/debug/__init__.py
@@ -28,6 +28,7 @@ classes = (
     operator.PrintIfcFile,
     operator.PrintObjectPlacement,
     operator.ProfileImportIFC,
+    operator.PurgeHdf5Cache,
     operator.PurgeIfcLinks,
     operator.RewindInspector,
     operator.SelectExpressFile,
diff --git a/src/blenderbim/blenderbim/bim/module/debug/operator.py b/src/blenderbim/blenderbim/bim/module/debug/operator.py
index d564943e72..bdf852b568 100644
--- a/src/blenderbim/blenderbim/bim/module/debug/operator.py
+++ b/src/blenderbim/blenderbim/bim/module/debug/operator.py
@@ -328,3 +328,12 @@ class SelectExpressFile(bpy.types.Operator):
     def invoke(self, context, event):
         context.window_manager.fileselect_add(self)
         return {"RUNNING_MODAL"}
+
+
+class PurgeHdf5Cache(bpy.types.Operator):
+    bl_idname = "bim.purge_hdf5_cache"
+    bl_label = "Purge HDF5 Cache"
+
+    def execute(self, context):
+        core.purge_hdf5_cache(tool.Debug)
+        return {"FINISHED"}
diff --git a/src/blenderbim/blenderbim/bim/module/debug/ui.py b/src/blenderbim/blenderbim/bim/module/debug/ui.py
index 22030d3e37..43cdb39dac 100644
--- a/src/blenderbim/blenderbim/bim/module/debug/ui.py
+++ b/src/blenderbim/blenderbim/bim/module/debug/ui.py
@@ -46,6 +46,9 @@ class BIM_PT_debug(Panel):
         row = layout.row()
         row.operator("bim.print_ifc_file")
 
+        row = layout.row()
+        row.operator("bim.purge_hdf5_cache")
+
         row = layout.row()
         row.operator("bim.purge_ifc_links")
 
diff --git a/src/blenderbim/blenderbim/core/debug.py b/src/blenderbim/blenderbim/core/debug.py
index 6e3970499b..65e7ac0607 100644
--- a/src/blenderbim/blenderbim/core/debug.py
+++ b/src/blenderbim/blenderbim/core/debug.py
@@ -19,3 +19,7 @@
 
 def parse_express(debug, filename):
     debug.add_schema_identifier(debug.load_express(filename))
+
+
+def purge_hdf5_cache(debug):
+    debug.purge_hdf5_cache()
diff --git a/src/blenderbim/blenderbim/core/tool.py b/src/blenderbim/blenderbim/core/tool.py
index 477ea3a095..65b75af91f 100644
--- a/src/blenderbim/blenderbim/core/tool.py
+++ b/src/blenderbim/blenderbim/core/tool.py
@@ -89,6 +89,7 @@ class Context:
 class Debug:
     def add_schema_identifier(cls, schema): pass
     def load_express(cls, filename): pass
+    def purge_hdf5_cache(cls): pass
 
 
 @interface
diff --git a/src/blenderbim/blenderbim/tool/debug.py b/src/blenderbim/blenderbim/tool/debug.py
index 17d0a7ee41..bc02fd6a1b 100644
--- a/src/blenderbim/blenderbim/tool/debug.py
+++ b/src/blenderbim/blenderbim/tool/debug.py
@@ -16,6 +16,7 @@
 # You should have received a copy of the GNU General Public License
 # along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.
 
+import os
 import bpy
 import ifcopenshell.express
 import blenderbim.core.tool
@@ -32,3 +33,10 @@ class Debug(blenderbim.core.tool.Debug):
         schema = ifcopenshell.express.parse(filename)
         ifcopenshell.register_schema(schema)
         return schema
+
+    @classmethod
+    def purge_hdf5_cache(cls):
+        cache_dir = os.path.join(bpy.context.scene.BIMProperties.data_dir, "cache")
+        filelist = [f for f in os.listdir(cache_dir) if f.endswith(".h5")]
+        for f in filelist:
+            os.remove(os.path.join(cache_dir, f))
diff --git a/src/blenderbim/test/core/test_debug.py b/src/blenderbim/test/core/test_debug.py
index 6a0278b840..04a6895c90 100644
--- a/src/blenderbim/test/core/test_debug.py
+++ b/src/blenderbim/test/core/test_debug.py
@@ -25,3 +25,9 @@ class TestParseExpress:
         debug.load_express("filename").should_be_called().will_return("schema")
         debug.add_schema_identifier("schema").should_be_called()
         subject.parse_express(debug, "filename")
+
+
+class TestPurgeHdf5Cache:
+    def test_run(self, debug):
+        debug.purge_hdf5_cache().should_be_called()
+        subject.purge_hdf5_cache(debug)
diff --git a/src/blenderbim/test/tool/test_debug.py b/src/blenderbim/test/tool/test_debug.py
index 1ada44ad5f..31e69d4bea 100644
--- a/src/blenderbim/test/tool/test_debug.py
+++ b/src/blenderbim/test/tool/test_debug.py
@@ -43,3 +43,14 @@ class TestLoadExpress(NewFile):
         schema = subject.load_express(os.path.join(cwd, "..", "files", "test.exp"))
         assert schema.schema_name == "IFCROGUE"
         return schema
+
+
+class TestPurgeHdf5Cache(NewFile):
+    def test_run(self):
+        cache_dir = os.path.join(bpy.context.scene.BIMProperties.data_dir, "cache")
+        test_file = os.path.join(cache_dir, "test.h5")
+        if not os.path.isfile(test_file):
+            fp = open(test_file, "x")
+            fp.close()
+        subject.purge_hdf5_cache()
+        assert not [f for f in os.listdir(cache_dir) if f.endswith(".h5")]