Master Masons learn how to craft the sturdiest buildings there are by using Steel Reinforcements and Hardened Bricks.

Unlock Master Mason from the Knowledge menu.

Steel Reinforcements are crafted at Blacksmith's Benches and are required for the construction of high-tier buildings.

Craft Steel Reinforcements in the crafting panel of a Blacksmith's Bench.

Shaped Wood is a common ingredient in many recipes.

Craft Shaped Wood in the crafting panel of a Carpenter's Bench.

Hardened Bricks are used when placing sturdy buildings.

Place fuel, Bricks and Stone Consolidant in the Furnace inventory and activate it by pressing the Play button.

You can replace buildings by placing a higher quality building piece of the same type in the same location as an existing piece. The materials for the piece you are replacing will be returned to your inventory when doing so.

Use your Construction Hammer to build or upgrade an existing building-piece.

Siege Cauldrons can be filled with tar. They are a good way of preventing enemies from getting into your buildings by climbing.

Unlock Siege Cauldron from the Knowledge menu.

Siege Cauldrons can filled with tar. They are a good way of preventing enemies from getting into your buildings by climbing.

Access the Siege Cauldron by pressing Interact while looking at it.

By adding Tar to a Siege Cauldron, you will prepare it for use.

Press Interact while facing the lever next to the Siege Cauldron to empty it onto any unfortunate climbers below it.