diff --git a/model_data/epc_attributes/RoofAttributes.py b/model_data/epc_attributes/RoofAttributes.py
index ec014357..542978a4 100644
--- a/model_data/epc_attributes/RoofAttributes.py
+++ b/model_data/epc_attributes/RoofAttributes.py
@@ -8,6 +8,10 @@ class RoofAttributes(BaseUtility):
     ROOF_TYPES = ['pitched', 'roof room', 'loft', 'flat', 'thatched', 'at rafters', 'assumed']
     DWELLING_ABOVE = ["another dwelling above", "other premises above"]
 
+    WELSH_TEXT = {
+        "ar oleddf, dim inswleiddio": "pitched, no insulation",
+    }
+
     def __init__(self, description: str):
         """
         :param description: Description of the roof.
@@ -15,7 +19,12 @@ class RoofAttributes(BaseUtility):
 
         self.description: str = description.lower()
         self.nodata = not description or description in self.DATA_ANOMALY_MATCHES
-        
+
+        translation = self.WELSH_TEXT.get(self.description)
+        if translation:
+            self.nodata = False
+            self.description = translation
+
         if not self.nodata and not any(
             rt in self.description for rt in self.ROOF_TYPES + self.DWELLING_ABOVE + ["average thermal transmittance"]
         ):
diff --git a/model_data/tests/test_data/test_roof_attributes_cases.py b/model_data/tests/test_data/test_roof_attributes_cases.py
index e2334c09..fabace6b 100644
--- a/model_data/tests/test_data/test_roof_attributes_cases.py
+++ b/model_data/tests/test_data/test_roof_attributes_cases.py
@@ -344,5 +344,10 @@ clean_roof_test_cases = [
     {'original_description': 'Thatched, with additional insulation', 'thermal_transmittance': None,
      'thermal_transmittance_unit': None, 'is_pitched': False, 'is_roof_room': False, 'is_loft': False, 'is_flat': False,
      'is_thatched': True, 'is_at_rafters': False, 'is_assumed': False, 'has_dwelling_above': False, 'is_valid': True,
-     'insulation_thickness': 'above average'}
+     'insulation_thickness': 'above average'},
+    {'original_description': 'Ar oleddf, dim inswleiddio', 'thermal_transmittance': None,
+     'thermal_transmittance_unit': None,
+     'is_pitched': True, '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': True,
+     'insulation_thickness': 'none'}
 ]