Building and Raft Size in Build and Defend Your Raft

Your raft is your base, your vehicle and your loot vault. This guide lists every build piece confirmed in game, explains the raft size system, and covers the placement rules that separate hour-100 rafts from floating loot piñatas.

The build piece catalog

All pieces are crafted at the Crafting Table and placed on your raft’s grid. Pieces can be picked up and rearranged at any time — unless they are too heavy or you lack crew permissions.

Category	Pieces	Notes
Floors	Floor, Reinforced Floor	Expand the deck; reinforced versions resist raiders
Walls	Wall, Wall 2, Reinforced Wall	Your raid armor. Reinforced walls shrug off low-level cannons
Doors	Door	Place several, but every extra door is an extra entry point — raiders will use them
Stairs	Stairs, Reinforced Stairs	The only way up; second-floor cannons need them
Windows	Reinforced Window	Wall sections you can see and shoot through
Defense	Tower, Reinforced Tower, Fence, Spike Trap, Barrel	Towers take 15 seconds to build and are climbable
Utility	Net, Trash Can, Chest, Captain’s Chair, Steering Wheel	Nets auto-collect loot; extra steering wheels let you drive from anywhere
Cosmetics	Flag, Torch, plus Tables, sittable Chairs and Flag Banners (September 6)	Zero defense value — build these last

I Made SECRET RAFT in 1 Hour VS 100 Hours in Roblox!

Raft Size: the 180-wood wall

Every raft has a build limit. Hit it and pieces refuse to place — the game tells you the raft size limit is reached.

The Raft Size upgrade lives in the Crafting Table’s upgrade tab and costs 180 wood for the first level. It raises the placement cap and prints “Raft size limit increased” when it lands. Players consistently call it the best wood sink in the mid game: no more choosing between a cannon slot and a wall segment.

Wood pain is real — the community joke is that the wood multiplier is the true final boss. Harvest islands, run nets constantly, and consider the cheap Starter Pack if you would rather skip the first grind wall.

Second floors

Stairs unlock a second deck, which matters for three reasons:

1. Height advantage in boarding fights — defenders drop down on attackers.
2. Cannon placement — floor layout determines what your auto-cannons can actually see. Read the cannons guide before you commit.
3. Chest rooms — a chest on an inner upper deck, behind a reinforced door, is the hardest steal in the game.

Blueprints and placement QoL (September 6)

Two September 6 changes matter at the build grid:

• Blueprints — new recipes now unlock by playing (the exact list is not published yet). They sit on top of the Crafting Table levels — see the Crafting Table guide for how the two systems stack.
• Facing previews — build previews now show which direction your piece will face before you place it, which ends the guess-rotate-place loop for cannons, chairs and stairs.

Held items also no longer block your view in first person, so building inside walled rooms is far less blind than it used to be.

Placement rules that get rafts killed

• Test your own ring. Walk it like a raider would: count doors, look for the uncovered side, check whether your chest is visible from the water.
• Do not build a maze you cannot escape. Raiders get lost in your clutter — so do you, mid-fight.
• Pick up and re-place freely. Pieces can be moved; wasted walls are a refund away. Nets are the exception — placing one over the net cap burns the materials.
• Mind the build height. A team member answered “sky’s the limit” about vertical building in the official Discord, though practical multi-story builds so far stay at two decks.

Related pages

• Best defense guide — layouts that keep loot
• Lock Raft and shield — panic buttons explained
• Beginner guide — the first-hour build order