diff --git a/etl/epc_clean/epc_attributes/WindowAttributes.py b/etl/epc_clean/epc_attributes/WindowAttributes.py
index cd767359..ce0b156a 100644
--- a/etl/epc_clean/epc_attributes/WindowAttributes.py
+++ b/etl/epc_clean/epc_attributes/WindowAttributes.py
@@ -80,7 +80,7 @@ class WindowAttributes(Definitions):
                         break
 
         # If we didn't find any coverage or type, we assume full coverage
-        if not result["glazing_coverage"]:
+        if (not result["glazing_coverage"]) & (result["glazing_type"] != "single"):
             result["glazing_coverage"] = "full"
 
         # We reset some values if the glazing is single
diff --git a/etl/epc_clean/tests/test_roof_attributes.py b/etl/epc_clean/tests/test_roof_attributes.py
index b0663a3e..481beedc 100644
--- a/etl/epc_clean/tests/test_roof_attributes.py
+++ b/etl/epc_clean/tests/test_roof_attributes.py
@@ -3,12 +3,13 @@ from pathlib import Path
 from etl.epc_clean.tests.test_data.test_roof_attributes_cases import clean_roof_test_cases
 from etl.epc_clean.epc_attributes.RoofAttributes import RoofAttributes
 
+
 # For local testing
-if __file__ == "<input>":
-    input_data_path = Path("./model_data/tests/test_data/EpcClean_inputs.obj")
-else:
-    current_file_path = Path(__file__)
-    input_data_path = current_file_path.parent / 'test_data' / 'EpcClean_inputs.obj'
+# if __file__ == "<input>":
+#     input_data_path = Path("./model_data/tests/test_data/EpcClean_inputs.obj")
+# else:
+#     current_file_path = Path(__file__)
+#     input_data_path = current_file_path.parent / 'test_data' / 'EpcClean_inputs.obj'
 
 
 class TestRoofAttributes:
@@ -88,7 +89,12 @@ class TestRoofAttributes:
 
     def test_clean_roof_no_description(self):
         roof = RoofAttributes('').process()
-        assert roof == {}
+        assert roof == {
+            'thermal_transmittance': False, 'thermal_transmittance_unit': False, 'is_pitched': False,
+            'is_roof_room': False, 'is_loft': False, 'is_flat': False, 'is_thatched': False,
+            'is_at_rafters': False, 'is_assumed': False, 'has_dwelling_above': False, 'is_valid': False,
+            'insulation_thickness': False
+        }
 
     def test_clean_roof_edge_cases(self):
         # Insulation thickness edge case