diff --git a/recommendations/RoofRecommendations.py b/recommendations/RoofRecommendations.py
index 0324c9cb..1e5636ff 100644
--- a/recommendations/RoofRecommendations.py
+++ b/recommendations/RoofRecommendations.py
@@ -150,7 +150,7 @@ class RoofRecommendations:
             return
 
         # If we have a u-value and we don't have a non-invasive recommendation, we can't recommend anything
-        if u_value and not any(
+        if (u_value is not None) and not any(
             x in MEASURE_MAP["roof_insulation"] for x in [r["type"] for r in self.property.non_invasive_recommendations]
         ):
             # We don't have enough information to provide a recommendation