diff --git a/recommendations/Recommendations.py b/recommendations/Recommendations.py
index be713e91..b9862585 100644
--- a/recommendations/Recommendations.py
+++ b/recommendations/Recommendations.py
@@ -476,7 +476,9 @@ class Recommendations:
         impact_summary = []
         for recommendations_by_type in property_recommendations:
             for rec in recommendations_by_type:
-                if rec["type"] in ["mechanical_ventilation", "trickle_vents", "draught_proofing"]:
+                if rec["type"] in [
+                    "mechanical_ventilation", "trickle_vents", "draught_proofing", "extension_cavity_wall_insulation"
+                ]:
                     # We don't have a percieved sap impact of mechanical ventilation or trickle vents, and we don't
                     # have the capacity to score draught proofing
                     continue
@@ -757,7 +759,9 @@ class Recommendations:
         # We now deduce if any of the recommendations result in a change of fuel type
         for recs in property_recommendations:
             for rec in recs:
-                if rec["type"] in ["mechanical_ventilation", "trickle_vents", "draught_proofing"]:
+                if rec["type"] in [
+                    "mechanical_ventilation", "trickle_vents", "draught_proofing", "extension_cavity_wall_insulation"
+                ]:
                     # We cannot score the impact on draught proofing
                     continue