Minecraft:Slab

File:All Slabs.png

All slabs

A slab is a half-height version of its respective Minecraft:block.

Variants

There are 61/66Template:Upcoming variants of slabs: Template:Columns-list

Obtaining

Crafting

All slabs have the same crafting recipe format, with one block resulting in two slabs each. Template:Crafting

Stonecutting

All slabs except wooden slabs and bamboo mosaic slabs can be obtained by stonecutting, at the same rate as with crafting. Template:Stonecutting

Usage

Placement

Slabs can occupy either the top half or the bottom half of a block, or both:

• Placing a slab on top of a Minecraft:block or on the side of a block in the lower half of the side surface creates a bottom slab.
• Placing a slab on the underside of a block or on the top half of the side surface creates a top slab.
• Placing a top and bottom slab of the same type in the same block creates a double slab block.
• It is possible to place two different kinds of slabs in the same block, but only by pushing one type of slab onto another type of slab which is right next to the world border via a piston.
• When a bottom slab has a top or bottom slab of a different type in the block above it (i.e., with one or two half blocks of air between the two different slabs), placing a slab that matches the one above onto the lower slab causes the slab above to become a double slab. The same behavior also occurs when placing different slabs underneath a top slab.

Slabs cannot be oriented vertically.

Behavior

File:Upside-downRedstone.png

An example of how top slabs can make redstone travel compactly "up stairs". Do note that redstone cannot travel down slabs.

File:Redstoneless Slab.png

Slabs do not block a vertical redstone connection as it is a transparent block.

File:Player sneaking under a slab.png

A player sneaking under a slab

Template:IN a single slab (top or bottom) is Minecraft:transparent to light and diffuses sky light, while a double slab is opaque. The empty half of a slab block is also transparent to mobs, unlike other transparent blocks such as Minecraft:fences and Minecraft:glass, which players can see through but mobs cannot.

A bottom placed on top of a Minecraft:hopper is transparent to items; the items fall through the bottom slab into the hopper. Without a hopper attached below, a bottom slab behaves as a solid surface.

Falling block entities (like sand, gravel, and concrete powder) turn into their dropped form if they land on a bottom slab, as when they fall on a torch.

Minecraft:Mobs see a slab as a full block when pathfinding. They can spawn on top slabs and double slabs, but not on bottom slabs. This can be used to prevent mob spawning in certain areas, such as mob farms.

Generally, the top face of top slabs, the bottom face of bottom slabs, and all faces of double slabs are handled as solid blocks. Due to this, blocks that require a solid surface for placement can be placed on these faces.

Double slabs are handled as a single block instead of two different slabs; as such, breaking one destroys the whole block and drops two slabs, as opposed to breaking only one slab within the same block-space. "Double slabs" that are not aligned to the grid (i.e. a bottom slab on top of a top slab) are handled as separate blocks and are broken individually.

Redstone dust placed on a top slab receives signals from redstone dust one block lower and adjacent, but cannot transmit signals down to that block.

Due to the way blast rays propagate from an Minecraft:explosion, bottom slabs provide extremely effective absorption to explosions directly on top of them. In some cases, only the slab is destroyed from a TNT explosion directly on top of it. Explosions from Minecraft:end crystals and Minecraft:creepers are also weakened.

Minecraft:Sneaking reduces the Minecraft:player's hitbox height to 1.5 blocks, allowing the player to fit through such a gap (for example, walking over a bottom slab with one block of air above it, or in a two block high tunnel with an upper slab on the ceiling). A player cannot walk from a block of Minecraft:soul sand directly up to a bottom slab without jumping – this applies not just to soul sand, but to any block Template:Frac of a block high or shorter, because the maximum step height of the player is 0.6 of a block. The player can walk off a bottom slab while sneaking, because the sneaking prevents falling only when the distance is higher than one half block.

If a single slab is placed in a water source block, or water is placed onto a single slab using a Minecraft:water bucket, the empty half of that slab's block is waterlogged. If a slab is placed in flowing water, a pocket of air is created in the unfilled half of the block. If the player's head is in this pocket, the player can breathe and see as clearly as from an air block. Template:IN, if a single slab is placed in between two water sources or waterlogged blocks, the slab becomes waterlogged.

A minecart on powered rails is not repelled by a slab, although it is repelled by a slab with a minecart on top.

Block states

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History

Trivia

• Any light directed through a slab does not affect any block's light values north of the source.
• Though single slabs in an otherwise flat floor composed of solid blocks are darkened as one would expect, the indented areas created by 2×1 or 2×2 stairs darken less because they have fewer surrounding solid blocks.<ref>Template:Bug resolved as "Works as Intended"</ref>
• When Minecraft:water or Minecraft:lava is on top of an upside-down slab, the water-dripping particles appear in midair below the slab instead of from the slab itself. This was fixed in Minecraft:Java Edition 1.13-pre7<ref>Template:Bug</ref> but will not be fixed Template:In.<ref>Template:Bug</ref>
• In 2017, Notch said that he regretted introducing slabs to the game because half blocks unnecessarily double the resolution of the game by adding detail outside of the game's otherwise cubic constraints.<ref>Template:Tweet</ref>
• Unlike Minecraft:stairs, many stone-type slabs have different Minecraft:hardness values (and thus, breaking time) compared to their full-block counterparts.<ref>Template:Bug</ref>

Gallery

Historical images

• The unimplemented dirt slab
  The unimplemented dirt slab
• Slabs can carry redstone signals.
  Slabs can carry redstone signals.
• First image of upside down slabs as shown on Minecraft:Jeb's Template:W
  First image of upside down slabs as shown on Minecraft:Jeb's Template:W
• First image of nether brick slabs as shown on Jeb's Twitter
  First image of nether brick slabs as shown on Jeb's Twitter
• First image of waterlogged slabs as shown on Minecraft:Dinnerbone's Twitter
  First image of waterlogged slabs as shown on Minecraft:Dinnerbone's Twitter
• First image of diorite slabs as shown on Minecraft:LadyAgnes' Twitter
  First image of diorite slabs as shown on Minecraft:LadyAgnes' Twitter
• Light shining through slabs
  Light shining through slabs
• Light shining through slabs
  Light shining through slabs
• Naturally occurring smooth stone slabs in a butcher shop before the Minecraft:Village and Pillage update
  Naturally occurring smooth stone slabs in a butcher shop before the Minecraft:Village and Pillage update
• Naturally occurring smooth stone slabs in a Minecraft:village blacksmith before the Minecraft:Village and Pillage update
  Naturally occurring smooth stone slabs in a Minecraft:village blacksmith before the Minecraft:Village and Pillage update

External links

• Template:Mcnet