diff --git a/code/game/gamemodes/endgame/supermatter_cascade/blob.dm b/code/game/gamemodes/endgame/supermatter_cascade/blob.dm
index ad080e11e2c..0e4d2b4f197 100644
--- a/code/game/gamemodes/endgame/supermatter_cascade/blob.dm
+++ b/code/game/gamemodes/endgame/supermatter_cascade/blob.dm
@@ -117,3 +117,6 @@
 		return
 
 	qdel(user)
+
+/turf/unsimulated/wall/supermatter/no_spread
+	avail_dirs = list()
diff --git a/code/game/turfs/flooring/flooring.dm b/code/game/turfs/flooring/flooring.dm
index 4bbb8dae4d8..9ba5e611dc5 100644
--- a/code/game/turfs/flooring/flooring.dm
+++ b/code/game/turfs/flooring/flooring.dm
@@ -196,4 +196,11 @@ var/list/flooring_types
 	can_paint = 1
 
 /decl/flooring/reinforced/ramp/bottom
-	icon_base = "rampbot"
\ No newline at end of file
+	icon_base = "rampbot"
+	
+/decl/flooring/diona
+	name = "biomass"
+	desc = "a mass of small intertwined aliens forming a floor... Creepy."
+	icon = 'icons/turf/floors.dmi'
+	icon_base = "diona"
+	flags = TURF_ACID_IMMUNE | TURF_REMOVE_SHOVEL
diff --git a/code/game/turfs/simulated/floor_types.dm b/code/game/turfs/simulated/floor_types.dm
index b2eb625d665..58c2680bd9c 100644
--- a/code/game/turfs/simulated/floor_types.dm
+++ b/code/game/turfs/simulated/floor_types.dm
@@ -5,6 +5,7 @@
 	name = "biomass flooring"
 	icon_state = "diona"
 	footstep_sound = "grassstep"
+	initial_flooring = /decl/flooring/diona
 
 /turf/simulated/floor/diona/attackby()
 	return
diff --git a/icons/turf/flooring/plating.dmi b/icons/turf/flooring/plating.dmi
index 48820f62c89..daf689f8dd7 100644
Binary files a/icons/turf/flooring/plating.dmi and b/icons/turf/flooring/plating.dmi differ