Slab

Transparency	Double slab: No Single slab: Partial (blocks light)
Luminance	No
Blast resistance	Wood: 15 Stone: 30
Tools
Renewable	Stone: Yes Wood: Yes (except Fake Wood) Cobblestone: Yes Stone Brick: Yes Purpur: Yes Quartz: Yes^{[Legacy Console Edition only]} Prismarine: Yes All others: No
Stackable	Yes (64), same type only
Flammable	Wood: Yes Stone: No
Drops	Single Slab: Itself Double Slab: 2 Fake Wood Slab: ^{[Bedrock Edition only]}
Data values	See Data values
Name	See Data values

Smooth Blocks

Transparency	No
Luminance	No
Blast resistance	Stone: 30 Sandstone: 4 Red Sandstone: 4 Quartz: 4
Tool
Renewable	No
Stackable	Yes (64), same type only
Flammable	No
Drops	Itself
Data values	Double Slabs:^{[until 1.13]} See Data values Smooth Blocks:^{[upcoming 1.13]} N/A
Name	Double Slabs:^{[until 1.13]} See Data values Smooth Blocks:^{[upcoming 1.13]} minecraft:smooth_stone minecraft:smooth_sandstone minecraft:smooth_red_sandstone minecraft:smooth_quartz

Slabs are half-versions of their respective blocks.

Smooth blocks are full blocks featuring the top texture of their respective slabs on all six sides. ^{[Java Edition only]} ^{[upcoming 1.13]}

Obtaining[edit]

Stone-type slabs and smooth blocks require a pickaxe to mine. Wooden slabs can be mined with anything, but an axe is quickest.

Block	Stone	Wood	Petrified Oak
Hardness	2	2	?
Tool
Breaking time^{[note 1]}
Hand	10	3	?
Wooden	1.5	1.5	?
Stone	0.75	0.75	?
Iron	0.5	0.5	?
Diamond	0.4	0.4	?
Golden	0.25	0.25	?

↑ Times are for unenchanted tools in seconds.

Block	Smooth Stone	Smooth Sandstone
Hardness	?	?
Tool
Breaking time^{[note 1]}
Hand	?	?
Wooden	?	?
Stone	?	?
Iron	?	?
Diamond	?	?
Golden	?	?

↑ Times are for unenchanted tools in seconds.

Natural generation[edit]

Stone slabs can be found naturally in villages lining the roof of blacksmith shops and inside the Butcher's Shop and the Blacksmith where they form counters. They are also found in strongholds where they are used in some of the stairs, ledges and torch pillars. Sandstone slabs can be found naturally in desert villages, desert wells, and desert temples. Double stone slabs can be found in villages, in the butcher's shop and in blacksmiths. A spruce wood slab serves as a table in igloo basements. Oak, birch, spruce, stone and cobblestone slabs can also be found in woodland mansions.

Creative inventory[edit]

Smooth blocks can be found in Creative inventory.

Crafting[edit]

Name	Ingredients	Crafting recipe	Description
Stone Slab	Stone	6	Can use stone only, no variants.^{[Java and Bedrock editions only]}
Stone Slab	Any Stone	6	Can use stone and its variants interchangeably.^{[Legacy Console Edition only]}
Sandstone Slab	Any Sandstone	6
Cobblestone Slab	Cobblestone	6
Bricks Slab	Bricks	6
Stone Bricks Slab	Any Stone Bricks	6
Wood Slab	Matching Wood Planks	6 6 6 6 6 6
Nether Brick Slab	Nether Brick	6
Quartz Slab	Any Quartz Block	6
Red Sandstone Slab	Any Red Sandstone	6
Purpur Slab	Purpur Block	6	Can use purpur block only, not the pillar.^{[Java Edition only]}
Purpur Slab	Any Purpur Block	6	Can use purpur block and pillar interchangeably.^{[Bedrock and Legacy Console editions only]}
Prismarine Slab (1.13)	Prismarine	6	Currently included in Bedrock Edition, but requires Experimental Gameplay to be enabled.
Prismarine Brick Slab (1.13)	Prismarine Bricks	6	Currently included in Bedrock Edition, but requires Experimental Gameplay to be enabled.
Dark Prismarine Slab (1.13)	Dark Prismarine	6	Currently included in Bedrock Edition, but requires Experimental Gameplay to be enabled.

Usage[edit]

Placement[edit]

Slabs can occupy either the top half or the bottom half:

Pointing at the top of a block or the bottom half one of its sides will place the slab in the lower half.
Pointing at the bottom of a block or the top half of its side will place the slab in the top half.

Slabs cannot be oriented sideways.

Crafting ingredient[edit]

Name	Ingredients	Crafting recipe
Armor Stand	Stick + Stone Slab
Chiseled Quartz Block	Quartz Slab
Chiseled Sandstone or Chiseled Red Sandstone	Sandstone Slab or Red Sandstone Slab
Chiseled Stone Bricks	Stone Bricks Slab
Daylight Sensor	Glass + Nether Quartz + Any Wood Slab
Purpur Pillar	Purpur Slab

Behavior[edit]

An example of how upside-down slabs can make redstone travel compactly "up stairs".

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

Slabs are treated as a whole block by other blocks and liquids. Two slabs can be piled on top of one another to make a full-size block, but different slab types cannot be mixed in this way.

Double slabs are handled as a single block instead of two different slabs; as such, breaking one will destroy the whole block and drop two slabs, as opposed to only breaking one slab within the block. "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 can be connected to the wire on the side of the slabs. Redstone placed on top of an upside-down slab can receive signals from an adjacent block of redstone one block lower but cannot transmit signals to it. This is why "ladders" made from upside-down slabs, as pictured to the right, can transmit redstone signals up, but not down.

Mobs see a slab as a full block. Mobs can also spawn on the tops of upside-down slabs and double slabs, but not on lower slabs.

In Bedrock Edition, mobs standing on right-side up slabs fail to pathfind correctly. They seem to perceive the slabs beneath them to be unwalkable, and will often end up spinning around in a small circle when they try to move. The block directly beneath the slab must be air or another right-side up slab to disturb pathfinding. Also in Bedrock Edition iron golems will not spawn on a slab even if it is the top half of a block.

Due to the way blast rays propagate from an explosion, bottom-half slabs provide extremely effective absorption to explosions directly on top of them.

Sneaking only reduces the player's hitbox height to 1.65 blocks, and so does not allow the player to walk over a single slab with one block of air above it, which is 1.5 blocks of space. A player cannot walk from a block of soul sand directly up to a slab without jumping – this applies not just to soul sand, but to any block ⁷⁄₈ 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 slab while sneaking, because the sneaking only prevents falling when the distance is higher than one half block.

If a slab is placed underwater, the empty half of that slab's block will appear and act as air. If the slab is upside-down, not only can the player grab a quick breath of air there, but the player can see as clearly as if they were above the surface.

Minecarts on powered rails will not be repelled from a slab. They will, however, be repelled by a slab with a minecart on top.

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

Fuel[edit]

Wooden slabs can be used as a fuel in furnaces, smelting 0.75 items per slab in the Java Edition and Console editions, and smelting 1.5 items per slab in Bedrock Edition.

Data values[edit]

The slab blocks use IDs and data values to differentiate between types. They also have block states which will replace data values in the future.

ID[edit]

Block	ID Name	Numerical ID
Double Stone-type Slabs	`double_stone_slab`^{[until 1.13]}	43^{[until 1.13]}
Stone-type Slabs	`stone_slab`^{[until 1.13]}	44^{[until 1.13]}
Double Wood Slab	`double_wooden_slab`^{[until 1.13]}	JE: 125^{[until 1.13]} BE: 157
Wood Slab	`wooden_slab`^{[until 1.13]}	JE: 126^{[until 1.13]} BE: 158
Double Red Sandstone Slab	`double_stone_slab2`^{[until 1.13]}	181^{[until 1.13]}
Red Sandstone Slab	`stone_slab2`^{[until 1.13]} `red_sandstone_slab`	182^{[until 1.13]}
Double Purpur Slab	JE: `purpur_double_slab`^{[until 1.13]} BE: `double_stone_slab2`	JE: 204^{[until 1.13]} BE: 182
Purpur Slab	JE: `purpur_slab` BE: `stone_slab2`	JE: 205^{[until 1.13]} BE: 182
Stone Slab	`stone_slab`^{[upcoming 1.13]}
Sandstone Slab	`sandstone_slab`^{[upcoming 1.13]}
Petrified Oak Slab	`petrified_oak_slab`^{[upcoming 1.13]}
Cobblestone Slab	`cobblestone_slab`^{[upcoming 1.13]}
Brick Slab	`brick_slab`^{[upcoming 1.13]}
Stone Brick Slab	`stone_brick_slab`^{[upcoming 1.13]}
Nether Brick Slab	`nether_brick_slab`^{[upcoming 1.13]}
Quartz Slab	`quartz_slab`^{[upcoming 1.13]}
Oak Slab	`oak_slab`^{[upcoming 1.13]}
Spruce Slab	`spruce_slab`^{[upcoming 1.13]}
Birch Slab	`birch_slab`^{[upcoming 1.13]}
Jungle Slab	`jungle_slab`^{[upcoming 1.13]}
Acacia Slab	`acacia_slab`^{[upcoming 1.13]}
Dark Oak Slab	`dark_oak_slab`^{[upcoming 1.13]}
Prismarine Slab	`prismarine_slab`^{[upcoming 1.13]}
Prismarine Brick Slab	`prismarine_brick_slab`^{[upcoming 1.13]}
Dark Prismarine Slab	`dark_prismarine_slab`^{[upcoming 1.13]}

Block data[edit]

See also: Data values

Double stone slabs[edit]

Block 43

	DV	Description
	0	Double Stone Slab
	1	Double Sandstone Slab
	2	Double (Stone) Wooden Slab
	3	Double Cobblestone Slab
	4	Double Bricks Slab
	5	Double Stone Brick Slab
	6	Double Nether Brick Slab ^{[Java and Legacy Console editions only]}
	6	Double Quartz Slab ^{[Bedrock Edition only]}
	7	Double Quartz Slab ^{[Java and Legacy Console editions only]}
	7	Double Nether Brick Slab ^{[Bedrock Edition only]}
	8	Smooth Double Stone Slab
	9	Smooth Double Sandstone Slab
	15	Tile Double Quartz Slab (note the underside)

^{[until 1.13]}

Block 181

	DV	Description
	0	Double Red Sandstone Slab
	8	Smooth Double Red Sandstone Slab

^{[until 1.13]}

The full stone, sandstone, quartz and red sandstone slabs have a top texture on all sides.

Stone slabs[edit]

Block 44

	DV	Description
	0	Stone Slab
	1	Sandstone Slab
	2	(Stone) Wooden Slab
	3	Cobblestone Slab
	4	Bricks Slab
	5	Stone Brick Slab
	6	Nether Brick Slab
	7	Quartz Slab
	8	Upper Stone Slab
	9	Upper Sandstone Slab
	10	Upper (Stone) Wooden Slab
	11	Upper Cobblestone Slab
	12	Upper Bricks Slab
	13	Upper Stone Brick Slab
	14	Upper Nether Brick Slab
	15	Upper Quartz Slab

^{[until 1.13]}

Block 182

	DV	Description
	0	Red Sandstone Slab
	8	Upper Red Sandstone Slab

^{[until 1.13]}

Double wooden slabs[edit]

Block 125

	DV	Description
	0	Double Oak Wood Slab
	1	Double Spruce Wood Slab
	2	Double Birch Wood Slab
	3	Double Jungle Wood Slab
	4	Double Acacia Wood Slab
	5	Double Dark Oak Wood Slab

^{[until 1.13]}

Wooden slabs[edit]

Block 126

	DV	Description
	0	Oak Wood Slab
	1	Spruce Wood Slab
	2	Birch Wood Slab
	3	Jungle Wood Slab
	4	Acacia Wood Slab
	5	Dark Oak Wood Slab
	8	Upper Oak Wood Slab
	9	Upper Spruce Wood Slab
	10	Upper Birch Wood Slab
	11	Upper Jungle Wood Slab
	12	Upper Acacia Wood Slab
	13	Upper Dark Oak Wood Slab

^{[until 1.13]}

Block state[edit]

See also: Block states

Double stone slabs[edit]

minecraft:double_stone_slab

Name	Value	Description
seamless	`true` `false`	If true, the top texture is used on all sides. Smooth Double Stone Slab Smooth Double Sandstone Slab Tile Double Quartz Slab
variant	`stone`	Double Stone Slab
	`sandstone`	Double Sandstone Slab
	`wood_old`	Double Wood Slab (with stone properties, no longer craftable)
	`cobblestone`	Double Cobblestone Slab
	`brick`	Double Brick Slab
	`stone_brick`	Double Stone Brick Slab
	`nether_brick`	Double Nether Brick Slab
	`quartz`	Double Quartz Slab

^{[until 1.13]}

minecraft:double_stone_slab2

Name	Value	Description
seamless	`true` `false`	If true, the top texture is used on all sides. Smooth Double Red Sandstone Slab
variant	`red_sandstone`	Double Red Sandstone Slab

^{[until 1.13]}

minecraft:purpur_double_slab

Name	Value	Description
variant	`default`	Purpur Double Slab

^{[until 1.13]}

Stone slabs[edit]

minecraft:stone_slab

Name	Value	Description
half	`top` `bottom`	Where the slab is within its block.
variant	`stone`	Stone Slab
	`sandstone`	Sandstone Slab
	`wood_old`	Wood Slab (with stone properties, no longer craftable)
	`cobblestone`	Cobblestone Slab
	`brick`	Brick Slab
	`stone_brick`	Stone Brick Slab
	`nether_brick`	Nether Brick Slab
	`quartz`	Quartz Slab

^{[until 1.13]}

minecraft:stone_slab2

Name	Value	Description
half	`top` `bottom`	Where the slab is within its block.
variant	`red_sandstone`	Red Sandstone Slab

^{[until 1.13]}

minecraft:purpur_slab

Name	Value	Description
half	`top` `bottom`	Where the slab is within its block.
variant	`default`	Purpur Slab

^{[until 1.13]}

Double wooden slabs[edit]

minecraft:double_wooden_slab

Name	Value	Description
variant	`oak`	Double Oak Wood Slab
	`spruce`	Double Spruce Wood Slab
	`birch`	Double Birch Wood Slab
	`jungle`	Double Jungle Wood Slab
	`acacia`	Double Acacia Wood Slab
	`dark_oak`	Double Dark Oak Wood Slab

^{[until 1.13]}

Wooden slabs[edit]

minecraft:wooden_slab

Name	Value	Description
half	`top` `bottom`	Where the slab is within its block.
variant	`oak`	Oak Wood Slab
	`spruce`	Spruce Wood Slab
	`birch`	Birch Wood Slab
	`jungle`	Jungle Wood Slab
	`acacia`	Acacia Wood Slab
	`dark_oak`	Dark Oak Wood Slab

^{[until 1.13]}

1.13[edit]

Stone slabs[edit]

minecraft:stone_slab

Name	Value	Description
type	`top` `bottom`	Where the slab is within its block.
type	`double`	The block is a double slab.

minecraft:sandstone_slab

Name	Value	Description
type	`top` `bottom`	Where the slab is within its block.
type	`double`	The block is a double slab.

minecraft:petrified_oak_slab

Name	Value	Description
type	`top` `bottom`	Where the slab is within its block.
type	`double`	The block is a double slab.

minecraft:cobblestone_slab

Name	Value	Description
type	`top` `bottom`	Where the slab is within its block.
type	`double`	The block is a double slab.

minecraft:brick_slab

Name	Value	Description
type	`top` `bottom`	Where the slab is within its block.
type	`double`	The block is a double slab.

minecraft:stone_brick_slab

Name	Value	Description
type	`top` `bottom`	Where the slab is within its block.
type	`double`	The block is a double slab.

minecraft:nether_brick_slab

Name	Value	Description
type	`top` `bottom`	Where the slab is within its block.
type	`double`	The block is a double slab.

minecraft:quartz_slab

Name	Value	Description
type	`top` `bottom`	Where the slab is within its block.
type	`double`	The block is a double slab.

minecraft:red_sandstone_slab

Name	Value	Description
type	`top` `bottom`	Where the slab is within its block.
type	`double`	The block is a double slab.

minecraft:purpur_slab

Name	Value	Description
type	`top` `bottom`	Where the slab is within its block.
type	`double`	The block is a double slab.

Wooden slabs[edit]

minecraft:oak_slab

Name	Value	Description
type	`top` `bottom`	Where the slab is within its block.
type	`double`	The block is a double slab.

minecraft:spruce_slab

Name	Value	Description
type	`top` `bottom`	Where the slab is within its block.
type	`double`	The block is a double slab.

minecraft:birch_slab

Name	Value	Description
type	`top` `bottom`	Where the slab is within its block.
type	`double`	The block is a double slab.

minecraft:jungle_slab

Name	Value	Description
type	`top` `bottom`	Where the slab is within its block.
type	`double`	The block is a double slab.

minecraft:acacia_slab

Name	Value	Description
type	`top` `bottom`	Where the slab is within its block.
type	`double`	The block is a double slab.

minecraft:dark_oak_slab

Name	Value	Description
type	`top` `bottom`	Where the slab is within its block.
type	`double`	The block is a double slab.

Prismarine slabs[edit]

minecraft:prismarine_slab

Name	Value	Description
type	`top` `bottom`	Where the slab is within its block.
type	`double`	The block is a double slab.

minecraft:prismarine_brick_slab

Name	Value	Description
type	`top` `bottom`	Where the slab is within its block.
type	`double`	The block is a double slab.

minecraft:dark_prismarine_slab

Name	Value	Description
type	`top` `bottom`	Where the slab is within its block.
type	`double`	The block is a double slab.

Video[edit]

Note: This video is outdated, as red sandstone slabs were added in 1.8 and purpur slabs were added in 1.9.

History[edit]

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Please remove this notice once you've added suitable images to the article. The specific instructions are: Upload what corresponds to the missing image links

Classic
May 17, 2009				Slabs suggested on the TIGSource forums.
0.26 (October 22, 2009, 1)				Dirt slab test.
0.26 (October 23, 2009, 2)				Half block nearly finished.
0.27 SURVIVAL TEST				Stone slabs were introduced to the game.
				Stone slabs could be obtained by mining coal ore because of the lack of inventory and crafting.
				At the time, slabs were called "stair" blocks before the introduction of what are currently called stairs in Infdev (June 29, 2010).
Indev
0.31			0.31 (January 29, 2010)	Slabs received a crafting recipe: 3 slabs from 3 cobblestone.
Infdev
March 27, 2010				Stone slabs now case shadows on adjacent blocks.^[verify]
March 30, 2010				Fixed above bug.
Beta
1.3				Added sandstone, "wooden" and cobblestone slabs as variants of the stone slabs. All had the same properties as stone slabs, apart from using different textures.
				The original wooden slabs had the oak plank texture, the only plank type at the time. Being variants of the stone slabs, they had to be mined with a pickaxe to collect, were not affected by fire, and had stronger blast resistance than wooden planks, making them a useful building material. The only way to obtain this slab on current versions is by using commands. The item tooltip will say "Wooden Slab" rather than "Oak Wood Slab", and the item form is a large full block with the missing texture until 17w47a.
				Before the additional slabs were added, a double stone slab would only yield one slab when broken. Since this update, all double slabs yield 2 of their respective single slabs when broken. Destroying double slabs with TNT, however, still only yields single slabs (when the slabs aren't simply destroyed by the explosion).
				Before Beta 1.3 came out, stone slabs were made with cobblestone instead of stone, but this update introduced cobblestone slabs to the game and changed the recipes for pressure plates and stone slabs so that there wouldn't be any conflicting recipes.
?				32px 32px Bottom slabs now use the bottom half of the double slab texture rather than the top. This change took place somewhere between Beta 1.3 and Beta 1.8.
1.7				Updated the texture of the cobblestone slab.
1.8			?	Added the stone brick, bricks, and smooth stone double slab. (Smooth stone double slab was only obtainable through inventory editing until 17w47a.)
1.8			?	The sprinting feature was added in this update. While stairs stopped the player's sprinting at the time, slabs allowed a player to continue sprinting.
Official release
1.0.0			Beta 1.9 Prerelease 5	Updated the textures of bricks and planks, and by extension that of the slabs.
1.2.1			1.2-pre	All types of slabs were now able to be placed upside down and under blocks; these occupy the top half of their block space rather than the bottom half.
1.2.1			1.2-pre	The crafting recipe changed so that 6 slabs would be crafted rather than 3. The prior restriction was likely due to the fact that the slab types were differentiated by their damage values instead of by different data values, similar to wood, coal or charcoal, and colored wool.
1.3.1			12w17a	New slabs were added for the four different types of wood planks, replacing the old wooden oak/"stone" slab. These new slabs were vulnerable to fire, and could be collected faster with an axe than with a pickaxe. Wooden slabs already crafted or placed in the world remain the old 'stone' type.
			12w21a	Sandstone slabs now generate in desert temples.
			12w25a	Redstone (including repeaters, torches, levers, and pressure plates) and rails can now be placed on slabs and stairs positioned upside down.
			12w26a	Mobs can now spawn on upside down slabs.
1.4.2			12w39a	Slabs interact properly with lighting now; when slabs are placed upside down, they now accept light from light sources themselves, and no longer block light to surrounding blocks; they no longer cast the shadow of a full-sized block.^[1]
1.4.6			November 28, 2012	Jeb tweeted a picture of himself crafting nether brick slabs.
1.4.6			12w49a	Added nether brick slabs, which causes the smooth stone double slab to change its data value to 43:7
1.5			January 22, 2013	Jeb states that the "smooth stone full half-slab" will be re-implemented with a data value of 43:8. Other slabs with data values of 43:9-43:15 will also use the top texture on all sides, resulting in a "smooth sandstone block" with a data value of 43:9. He also stated that they may be obtained legitimately later.^[2]
			13w01a	Wooden Slabs can now be used to craft daylight sensors.
			13w02a	Added quartz slabs, featuring the top quartz texture on all six sides. The formerly unused slab type, known as the smooth stone slab, was removed from the game. Its data values were replaced with the nether quartz slab.
			13w04a	The smooth stone double slab is re-implemented with a data value of 43:8. The smooth sandstone double slab is also added, with a data value of 43:9.
			13w04a	Seamless data values of 43:10-43:15 are also added, but are unused and appear identical to their normal counterparts.
			13w09c	Quartz slabs and double slabs now use the top, side and bottom textures of the block of quartz.
			13w09c	Its seamless counterpart with a data value of 43:15 retains the top texture on all 6 sides.
			?	Changed the texture of sandstone slabs slightly.
1.7.2			1.7-pre	Added acacia and dark oak slabs.
1.8			14w02a	Stone brick slabs can now be used to craft chiseled stone bricks.
			14w02a	Stone slabs could be crafted using granite, diorite, andesite, or their polished counterparts.
			14w25a	Double stone slabs and double wooden slabs can no longer be obtained as an item.
			14w32a	Added red sandstone slabs and double slabs, as well as smooth red sandstone double slabs.
			14w32a	Armor stands are crafted using any slab.
			14w32b	Armor stands can only be crafted using stone slabs.
			14w33a	Stone slabs can no longer be crafted using granite, diorite, andesite, or their polished counterparts.
1.9			June 22, 2015	Jeb reveals purpur slabs on Instagram, with the words "MINECON 2015 HYPE!"
			15w31a	Added purpur slabs and double slabs.
			15w43a	A spruce slab acts as the middle of a table generated within igloo basements.
1.11			16w39a	Oak, birch, spruce, stone, and cobblestone slabs now generate in woodland mansions.
Upcoming Java Edition
1.13			17w47a	The different variant block states for `stone_slab`, `stone_slab2`, `wooden_slab`, `purpur_slab`, `double_stone_slab`, `double_stone_slab2`, `double_wooden_slab` and `purpur_double_slab` IDs have been split up and merged into their own IDs depending on variant.
				Old non-flammable wooden slabs, now called "Petrified oak slabs", have been re-implemented into the creative inventory.
				Bricks slab renamed to brick slab.
				Stone bricks slab renamed to stone brick slab.
				<Wood type> wood slab renamed to <wood type> slab.
				Smooth double slabs, now smooth blocks, added to the creative inventory. Smooth blocks now drop themselves instead of slabs when mined.
				Prior to The Flattening, these blocks' numeral IDs were 43, 44, 125, 126, 181, 182, 204 and 205.
			18w07a	Added slabs for prismarine, prismarine bricks, and dark prismarine.
			18w10c	Water can now be placed on the same block as slabs.
			18w20a	Changed the name of "Prismarine Bricks Slab" to "Prismarine Brick Slab."
1.14			April 17th, 2018	Dinnerbone confirms that 1.14 will contain many new stairs and slabs.
Pocket Edition Alpha
0.1.0				Added stone slabs.
0.3.0				Added wood (original oak), brick and cobblestone slabs.
0.6.0				Added sandstone and stone brick slabs.
				Slabs can be placed on the top half of blocks.
				The recipes for crafting slabs gives 6 slabs instead of 3 slabs.
0.7.3				Added quartz slabs.
0.7.3				Wooden slabs crafted during and after this update are now flammable. Existing wooden slabs (which have stone properties) are now tagged "Fake Wood Slab" and drop real wooden slabs.
0.8.0			build 2	Added birch, spruce and jungle wood slabs.
0.9.0			build 1	Added acacia and dark oak wood slabs.
			build 1	Stone slabs now generate naturally in villages.
			build 11	Added crafting recipe for jungle wood slabs.
?				Changed wooden slab name from [woodtype] Slab to [woodtype] Wood Slab
0.12.1			build 1	Added nether brick slabs.
0.13.0			build 1	Wooden slabs are now used to craft daylight sensors.
0.14.0			build 1	Added red sandstone slabs.
0.14.2				32px Brightened the nether brick slab texture.
Pocket Edition
1.0			build 1	Added purpur slabs.
1.0			build 1	A spruce slab acts as the middle of a table generated within igloo basements.
1.1			build 1	Oak, birch, spruce, stone, and cobblestone slabs now generate in woodland mansions.
Bedrock Edition
1.2.13			build 3	Added slabs for prismarine, prismarine brick and dark prismarine as part of Experimental Gameplay.
1.2.14			build 1	Fully implemented the slabs for prismarine, prismarine brick, and dark prismarine.
Legacy Console Edition
TU1	CU1	1.0	Patch 1	Added stone, wood (original oak), sandstone and cobblestone slabs.
TU5				Added stone brick and brick slabs.
TU9				Added birch wood, spruce wood and nether brick slabs.
TU9				Wooden slabs crafted during and after this update are now flammable. Existing slabs (which have stone properties) are not stackable with the new slabs.
TU12				Added jungle wood slabs.
TU12				Slabs can be placed upside down. Items can be placed directly on upside down slabs.
TU14		1.04		Added quartz slabs.
				Changed placement of half blocks & other blocks on half blocks.
				Changed placement of upside down slabs.
TU27	CU15	1.18		Added acacia and dark oak wood slabs to the creative inventory.
TU46	CU36	1.38	Patch 15	Added purpur slabs.

Issues[edit]

Issues relating to "Slab" are maintained on the bug tracker. Report issues there.

Trivia[edit]

Slabs let a small amount of light pass through their edges. This light is only visible when Smooth Lighting is turned on, and does not affect mob spawning or other light-dependent processes.
- The exception of this is that any light directed through a slab does not affect any block's light values north of the source.
Whereas 1x1 dents in a flat floor using slabs are darkened as one would expect, 1x1 dents created using 2x1 or 2x2 stairs will darken less, due to having fewer surrounding solid blocks. This is a completely intentional feature.^[3]
When water or lava are on top of an upside-down slab, the water dripping particles will appear in midair below the slab instead of from the slab itself, this was fixed in Java Edition 1.13-pre7^[4], but is an intentional feature in Bedrock Edition.^[5]

Gallery[edit]

Brick slabs.
Stone Brick slabs.
Double stone slab (left) compared to smooth full half-slab.
Naturally occurring stone slabs in a butcher shop.
Naturally occurring stone slabs in a village Blacksmith.
First image of upside down slabs as shown on Jeb's Twitter.
Slabs used to create the impression of half-aligned full blocks.
All six types of wooden slabs.
Trapdoors on slabs.
Example of slab shelving by placing slabs below other slabs.
Smooth sandstone double slabs compared to smooth stone double slabs
A wooden "stone" slab house with a netherrack fireplace.
Light passing through the sides of a brick slab from above. A normal block would render complete darkness.
Fake wooden slabs.