diff --git a/builder-lib.lua b/builder-lib.lua
index 870b632..df77c23 100644
--- a/builder-lib.lua
+++ b/builder-lib.lua
@@ -3,7 +3,8 @@ local Builder_Lib = {
     movementDirection = {
         height = "up",
         width = "right"
-    }
+    },
+    placeDirection = "down"
 }
 
 
@@ -23,19 +24,33 @@ local function selectItemToPlace(itemname)
     if item == nil or item.name ~= itemname then
         local slot = turtleController:findItemInInventory(itemname)
         if slot == nil then
-            error("No more blocks available to build")
+            error("No more blocks available to build" .. tostring(turtle.getItemCount()))
         end
         turtle.select(slot)
     end
 end
 
-local function placeDownItem(itemname)
+---
+---@param self Builder_Lib
+---@param itemname string
+local function placeItem(self, itemname)
     selectItemToPlace(itemname)
-    if turtle.detectDown() then
-        local _, down = turtle.inspectDown()
-        turtleController:tryAction("digD")
+    local function action()
+        if (self.placeDirection == "down") then
+            if turtle.detectDown() then
+                local _, down = turtle.inspectDown()
+                turtleController:tryAction("digD")
+            end
+            return turtle.placeDown()
+        else
+            if turtle.detectUp() then
+                local _, down = turtle.inspectUp()
+                turtleController:tryAction("digU")
+            end
+            return turtle.placeUp()
+        end
     end
-    local succ, txt = turtle.placeDown()
+    local succ, txt = action()
     if not succ then error(txt) end
 end
 
@@ -82,10 +97,10 @@ function Builder_Lib:floor(length, width)
     if block == nil then error("No block at item slot 1") end
     for j = 1, width, 1 do
         for i = 1, length - 1, 1 do
-            placeDownItem(block.name)
+            placeItem(self, block.name)
             turtleController:goStraight(1)
         end
-        placeDownItem(block.name)
+        placeItem(self, block.name)
         if (j < width) then
             getTurningDirection(self, j)
             turtleController:goStraight(1)
diff --git a/builder.lua b/builder.lua
index f129a28..7db64f3 100644
--- a/builder.lua
+++ b/builder.lua
@@ -13,10 +13,11 @@ local function help()
     print("Options:")
     print("-mH[movementDir. Horizon] <'left'|'right'> [default: right]")
     print("-mV[movementDir. Vertical] <'down'|'up'> [default: up]")
+    print("-p (place) up | down")
     print("-w[width] <number>")
     print("-l[length] <number>")
     print("-h[height] <number>")
-    print("-help")
+    print("help")
 end
 if #arg == 0 then
     help()
@@ -58,9 +59,9 @@ local argsSwitch = {
         end
         size["height"] = tonumber(arg[no[1]])
     end,
-    ["-help"] = function()
-        help()
-        stopExec = true
+    ["-p"] = function(no)
+        no[1] = no[1] + 1
+        builder.placeDirection = arg[no[1]]
     end,
     ["help"] = function()
         help()
diff --git a/tests/floor_spec.lua b/tests/floor_spec.lua
index d637a1e..0660492 100644
--- a/tests/floor_spec.lua
+++ b/tests/floor_spec.lua
@@ -181,6 +181,28 @@ describe("Testing placing Floor", function ()
         assert.are.equal(100, blocksTested)
     end)
 
+        it("Create 10x10 floor - to Left - above", function()
+        assert.are.equal(0, countTableLength(turtleEmulator.blocks))
+        local succ, err = xpcall(function ()
+            builder.movementDirection.width = "left"
+            builder.placeDirection = "up"
+            builder:floor(10, 10)
+        end, debug.traceback)
+        if err then error(err) end
+        assert.are.equal(100, countTableLength(turtleEmulator.blocks))
+        local blocksTested = 0
+        -- print("Blocks placed", textutils.serialize(turtleEmulator.blocks))
+        for j = -9, 0, 1 do
+            for i = 0, 9, 1 do
+                blocksTested = blocksTested + 1
+                assert.is.truthy(
+                    turtleEmulator:getBlock(vector.new(i, 1, j))
+                )
+            end
+        end
+        assert.are.equal(100, blocksTested)
+    end)
+
 
     it("Error on too few Blocks", function()
         local blocksToTest = blockAmount * 2 + 1