I'm using a farm house as my home base and am trying to upgrade the exterior doors and walls. I was able to upgrade the exterior doors. When I point the upgrade tool (nail gun in this case) at a wall, it makes this clanking sound and displays a red X and the icon for wood. I am carrying 500+ wood in my inventory, so I'm wondering if am I able to upgrade the walls?

Edit: attached screenshots showing the nail gun trying to upgrade a wall with the wood icon popup in the lower right, and the second showing 542 wood in my inventory.

nail gun needs wood to upgrade wall inventory has 542 wood

  • What system is this and what version of the game are you playing?
    – Nelson
    Commented May 29, 2023 at 15:28
  • Posting a screenshot of the icon you mentioned as well as the door you are trying to upgrade would help. If I remember right, it goes wood → raw iron → forged iron → forged steel.
    – Timmy Jim
    Commented May 29, 2023 at 16:17
  • @Nelson this is Steam with the War of the Walkers mod. I added those tags, totally forgot to specify them earlier. Thanks for asking.
    – Alan
    Commented Jun 1, 2023 at 2:42

1 Answer 1


It turns out that the icon being shown for materials I was lacking for upgrading the wood walls is not Wood, rather it is Wood & Nails. As I continued playing the game, I randomly found this material in a Trader's inventory, so purchased everything they had, and when I returned to my home base was able to upgrade the walls with it.

Wood & Nails Resource Upgraded wall in existing POI

  • 2
    That must be specific to that mod you are using because I don't recall that being an item in vanilla
    – Timmy Jim
    Commented Jun 2, 2023 at 17:27

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