diff --git a/mods/ikea_showroom/init.lua b/mods/ikea_showroom/init.lua
index aced0ff..23e79fa 100644
--- a/mods/ikea_showroom/init.lua
+++ b/mods/ikea_showroom/init.lua
@@ -20,13 +20,21 @@ minetest.register_node(":showroom:floor", {
 	sunlight_propagates = true,
 })
 
+minetest.register_node(":showroom:wall", {
+	paramtype = "light",
+	description = "Base Wall Node, Do Not Place (You Hacker!)",
+	tiles = {{name = "ikea_showroom_wall.png"}},
+	groups = {static = 1},
+	sunlight_propagates = true,
+})
+
 ikea.register_department({
 	name = "showroom",
 	get_schematic = function(edges, x, z)
 		if edges.e or edges.w or edges.n or edges.s then
-			return schems.floor, nil
+			return schems.get_outer(Perlin, edges, x, z), nil
 		else
-			return schems.get(Perlin, x, z), nil
+			return schems.get_inner(Perlin, x, z), nil
 		end
 	end,
 })
diff --git a/mods/ikea_showroom/schematics.lua b/mods/ikea_showroom/schematics.lua
index b4c7e14..2a1df93 100644
--- a/mods/ikea_showroom/schematics.lua
+++ b/mods/ikea_showroom/schematics.lua
@@ -1,5 +1,54 @@
 local schems = {}
-schems.floor = schematic.new({x = 16, y = 1, z = 16}, "showroom:floor")
+
+-- Corner North/South East/West Top/Bottom
+local corner_swb = {x=0,y=0,z=0}
+local corner_seb = {x=15,y=0,z=0}
+local corner_nwb = {x=0,y=0,z=15}
+local corner_neb = {x=15,y=0,z=15}
+
+local corner_swt = {x=0,y=15,z=0}
+local corner_set = {x=15,y=15,z=0}
+local corner_nwt = {x=0,y=15,z=15}
+local corner_net = {x=15,y=15,z=15}
+
+function schems.get_outer(Perlin, edges, x, z)
+	local schem = schematic.new({x=16,y=16,z=16}, "air")
+	local has_opening = util.bound_perlin(Perlin, 8, x, 4, z) + 1 == 1
+
+	-- Corners First
+	if edges.n and edges.e then
+		schematic.fill_area(schem, "showroom:wall", corner_swb, corner_swt)
+	elseif edges.n and edges.w then
+		schematic.fill_area(schem, "showroom:wall", corner_seb, corner_set)
+	elseif edges.s and edges.w then
+		schematic.fill_area(schem, "showroom:wall", corner_neb, corner_net)
+	elseif edges.s and edges.e then
+		schematic.fill_area(schem, "showroom:wall", corner_nwb, corner_nwt)
+	elseif edges.n then
+		schematic.fill_area(schem, "showroom:wall", corner_swb, corner_set)
+		if has_opening then
+			schematic.fill_area(schem, "air", {x=7,y=0,z=0}, {x=8,y=4,z=0})
+		end
+	elseif edges.s then
+		schematic.fill_area(schem, "showroom:wall", corner_nwb, corner_net)
+		if has_opening then
+			schematic.fill_area(schem, "air", {x=7,y=0,z=15}, {x=8,y=4,z=15})
+		end
+	elseif edges.w then
+		schematic.fill_area(schem, "showroom:wall", corner_seb, corner_net)
+		if has_opening then
+			schematic.fill_area(schem, "air", {x=15,y=0,z=7}, {x=15,y=4,z=8})
+		end
+	elseif edges.e then
+		schematic.fill_area(schem, "showroom:wall", corner_swb, corner_nwt)
+		if has_opening then
+			schematic.fill_area(schem, "air", {x=0,y=0,z=7}, {x=0,y=4,z=8})
+		end
+	end
+
+	schematic.fill_area(schem, "showroom:floor", corner_swb, corner_neb)
+	return schem
+end
 
 local rooms = {"lounge", "kitchen", "bedroom"}
 local display_tables = {
@@ -28,11 +77,11 @@ local display_tables = {
 	},
 }
 
-function schems.get(Perlin, x, z)
+function schems.get_inner(Perlin, x, z)
 	local room_name = rooms[util.bound_perlin(Perlin, #rooms, x, 0, z) + 1]
 	local applicable_displays = table.search(display_tables, {includes = {rooms = {room_name}}})
-	local combined_schem = schematic.new({x = 16, y = 16, z = 16, "air"})
-	schematic.fill_area(combined_schem, "showroom:floor", {x = 0, y = 0, z = 0}, {x = 15, y = 0, z = 15})
+	local schem = schematic.new({x = 16, y = 16, z = 16, "air"})
+	schematic.fill_area(schem, "showroom:floor", {x = 0, y = 0, z = 0}, {x = 15, y = 0, z = 15})
 
 	for x2 = 0, 15, 8 do
 		for z2 = 0, 15, 8 do
@@ -42,12 +91,12 @@ function schems.get(Perlin, x, z)
 				local applicable_furniture = table.search(ikea.registered_furniture, {includes = {tags = {v.type, room_name}}})
 				local id = util.bound_perlin(Perlin, #applicable_furniture, x + x2, 2, z + z2) + 1
 
-				local index = schematic.index(combined_schem, vector.add(v.pos, {x = x2, y = 1, z = z2}))
-				combined_schem.data[index] = {name = applicable_furniture[id].node_name}
+				local index = schematic.index(schem, vector.add(v.pos, {x = x2, y = 1, z = z2}))
+				schem.data[index] = {name = applicable_furniture[id].node_name}
 			end
 		end
 	end
-	return combined_schem
+	return schem
 end
 
 return schems
diff --git a/mods/ikea_showroom/textures/ikea_showroom_wall.png b/mods/ikea_showroom/textures/ikea_showroom_wall.png
new file mode 100644
index 0000000..be95f8f
Binary files /dev/null and b/mods/ikea_showroom/textures/ikea_showroom_wall.png differ
diff --git a/mods/util/schematic.lua b/mods/util/schematic.lua
index 4f89a5a..2845982 100644
--- a/mods/util/schematic.lua
+++ b/mods/util/schematic.lua
@@ -17,10 +17,24 @@ end
 
 function schematic.fill_area(schem, node, pos1, pos2)
 	node = util.node_or_ignore(node)
+	local x_incr = 1
+	local y_incr = 1
+	local z_incr = 1
 
-	for z = pos1.z, pos2.z do
-		for y = pos1.y, pos2.y do
-			for x = pos1.x, pos2.x do
+	-- Lua does not infer a negative increment
+	if pos1.x > pos2.x then
+		x_incr = -1
+	end
+	if pos1.y > pos2.y then
+		y_incr = -1
+	end
+	if pos1.z > pos2.z then
+		z_incr = -1
+	end
+
+	for z = pos1.z, pos2.z, z_incr do
+		for y = pos1.y, pos2.y, y_incr do
+			for x = pos1.x, pos2.x, x_incr do
 				local index = schematic.index(schem, {x = x, y = y, z = z})
 				schem.data[index] = node
 			end