Slab

Slab

Transparent	Double slab: No Single slab: Partial (blocks light)
Luminance	0
Blast resistance	Wood: 15 Stone: 30
Tools
Renewable	Petrified Oak, Andesite, Granite, Diorite and Smooth Quartz: No Quartz, Nether Brick and Red Nether Brick: Yes‌[BE & LCE only] Brick, Sandstone and Red Sandstone: Yes‌[BE only]‌[upcoming: JE 1.14] All others: Yes
Stackable	Yes (64), same type only
Flammable	Wood: Yes Stone: No
Drops	Single Slab: Itself Double Slab: 2 Petrified Oak Slab: ‌[Bedrock Edition only]
Data values	See § Data values
Name	See § Data values

Slabs are half-versions of their respective blocks.

Obtaining

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 Slab
Hardness	2	2	2
Tool
Breaking time
Hand	10	3	3
Wooden	1.5	1.5	1.5
Stone	0.75	0.75	0.75
Iron	0.5	0.5	0.5
Diamond	0.4	0.4	0.4
Golden	0.25	0.25	0.25

Natural generation

Smooth 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 pyramids. 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 mansions.

Dark Oak, Cobblestone, and Mossy Cobblestone slabs generate in pillager outpost.‌^{[BE only]}‌^{[upcoming: JE 1.14]}

Smooth sandstone slabs generate in desert village.‌^{[BE only]}‌^{[upcoming: JE 1.14]}

Crafting

Name	Ingredients	Crafting recipe	Description
Wood Slab	Matching Planks	666666
Stone Slab	Stone	6	Can use stone only.‌[Java Edition only][until JE 1.14]
Stone Slab	Any Stone	6	Can use stone, andesite, polished andesite, granite, polished granite, diorite and polished diorite interchangeably.‌[Legacy Console Edition only]
Smooth Stone Slab	Smooth Stone	6	‌[Bedrock Edition only]‌[upcoming: JE 1.14]
Cobblestone Slab	Cobblestone	6
Brick Slab	Bricks	6
Stone Brick Slab	Any Stone Bricks	6	‌[Java and Legacy Console editions only][until JE 1.14]
Stone Brick Slab	Stone Bricks	6	‌[Bedrock Edition only]‌[upcoming: JE 1.14]
Nether Brick Slab	Nether Bricks	6
Quartz Slab	Any Quartz Block	6
Purpur Slab	Any Purpur Block	6
Sandstone Slab	Any Sandstone	6	‌[Java and Legacy Console editions only][until JE 1.14]
Red Sandstone Slab	Any Red Sandstone	6	‌[Java and Legacy Console editions only][until JE 1.14]
Sandstone Slab	Sandstone	6	‌[Bedrock Edition only]‌[upcoming: JE 1.14]
Red Sandstone Slab	Red Sandstone	6	‌[Bedrock Edition only]‌[upcoming: JE 1.14]
Prismarine Slab or Prismarine Brick Slab or Dark Prismarine Slab	Prismarine or Prismarine Bricks or Dark Prismarine	666
Stone Slab	Stone	6	‌[Bedrock Edition only]‌[upcoming: JE 1.14]
Andesite Slab or Polished Andesite Slab	Andesite or Polished Andesite	66	‌[Bedrock Edition only]‌[upcoming: JE 1.14]
Diorite Slab or Polished Diorite Slab	Diorite or Polished Diorite	66	‌[Bedrock Edition only]‌[upcoming: JE 1.14]
Granite Slab or Polished Granite Slab	Granite or Polished Granite	66	‌[Bedrock Edition only]‌[upcoming: JE 1.14]
Mossy Stone Brick Slab	Mossy Stone Bricks	6	‌[Bedrock Edition only]‌[upcoming: JE 1.14]
Mossy Cobblestone Slab	Mossy Cobblestone	6	‌[Bedrock Edition only]‌[upcoming: JE 1.14]
Smooth Sandstone Slab or Smooth Red Sandstone Slab	Smooth Sandstone or Smooth Red Sandstone	66	‌[Bedrock Edition only]‌[upcoming: JE 1.14]
Smooth Quartz Slab	Smooth Quartz	6	‌[Bedrock Edition only]‌[upcoming: JE 1.14]
Red Nether Brick Slab	Red Nether Bricks	6	‌[Bedrock Edition only]‌[upcoming: JE 1.14]
End Stone Brick Slab	End Stone Bricks	6	‌[Bedrock Edition only]‌[upcoming: JE 1.14]
Cut Sandstone Slab or Cut Red Sandstone Slab	Cut Sandstone or Cut Red Sandstone	66	‌[Bedrock Edition only]‌[upcoming: JE 1.14]

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 block or on the side of a block in the lower half of the side surface will create a bottom slab
• Placing a slab on the underside of a block or on the top half of the side surface will create a top slab
• Placing a top and bottom slab of the same type in the same block will create a double slab block

Slabs cannot be oriented vertically.

Behavior

An example of how top slabs can make redstone travel compactly "up stairs".

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

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 dust can be placed on a top slab, not a bottom slab. 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.

Mobs see a slab as a full block. Mobs can spawn on top slabs and double slabs, but not on bottom slabs. In Bedrock Edition iron golems will not spawn even on a top slab.

In Bedrock Edition, mobs standing on bottom slabs with air or another bottom slab below fail to pathfind correctly. They often end up spinning around in a small circle when they try to move.

Due to the way blast rays propagate from an explosion, bottom 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 bottom slab with one block of air above it, which is 1.5 blocks of space. (In Java Edition,‌^{[upcoming: JE 1.14]} a crouching player's hitbox is exactly 1.5 blocks, allowing the player to fit through such a gap.) A player cannot walk from a block of soul sand directly up to a bottom 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 bottom slab while sneaking, because the sneaking only prevents falling when the distance is higher than one half block.

If a slab is placed in a water source block, the empty half of that slab's block will be waterlogged. If a top slab is placed in flowing water, a pocket of air is created in the bottom half of the block. In this pocket, the player can breathe and see as clearly as from an air block.

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 bottom slab, as when they fall on a torch.

Slabs do not block light.‌^{[Bedrock Edition only]}

Fuel

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

Data values

ID

Java Edition:

Block	Name ID
Red Sandstone Slab	red_sandstone_slab
Purpur Slab	purpur_slab
Stone Slab[until JE 1.14] Smooth Stone Slab‌[upcoming: JE 1.14]	stone_slab[until JE 1.14] smooth_stone_slab‌[upcoming: JE 1.14]
Sandstone Slab	sandstone_slab
Petrified Oak Slab	petrified_oak_slab
Cobblestone Slab	cobblestone_slab
Brick Slab	brick_slab
Stone Brick Slab	stone_brick_slab
Nether Brick Slab	nether_brick_slab
Quartz Slab	quartz_slab
Oak Slab	oak_slab
Spruce Slab	spruce_slab
Birch Slab	birch_slab
Jungle Slab	jungle_slab
Acacia Slab	acacia_slab
Dark Oak Slab	dark_oak_slab
Prismarine Slab	prismarine_slab
Prismarine Brick Slab	prismarine_brick_slab
Dark Prismarine Slab	dark_prismarine_slab
Stone Slab‌[upcoming: JE 1.14]	stone_slab‌[upcoming: JE 1.14]
Granite Slab‌[upcoming: JE 1.14]	granite_slab‌[upcoming: JE 1.14]
Polished Granite Slab‌[upcoming: JE 1.14]	polished_granite_slab‌[upcoming: JE 1.14]
Diorite Slab‌[upcoming: JE 1.14]	diorite_slab‌[upcoming: JE 1.14]
Polished Diorite Slab‌[upcoming: JE 1.14]	polished_diorite_slab‌[upcoming: JE 1.14]
Andesite Slab‌[upcoming: JE 1.14]	andesite_slab‌[upcoming: JE 1.14]
Polished Andesite Slab‌[upcoming: JE 1.14]	polished_andesite_slab‌[upcoming: JE 1.14]
Red Nether Brick Slab‌[upcoming: JE 1.14]	red_nether_brick_slab‌[upcoming: JE 1.14]
End Stone Brick Slab‌[upcoming: JE 1.14]	end_stone_brick_slab‌[upcoming: JE 1.14]
Mossy Stone Brick Slab‌[upcoming: JE 1.14]	mossy_stone_brick_slab‌[upcoming: JE 1.14]
Mossy Cobblestone Slab‌[upcoming: JE 1.14]	mossy_cobblestone_slab‌[upcoming: JE 1.14]
Smooth Sandstone Slab‌[upcoming: JE 1.14]	smooth_sandstone_slab‌[upcoming: JE 1.14]
Smooth Red Sandstone Slab‌[upcoming: JE 1.14]	smooth_red_sandstone_slab‌[upcoming: JE 1.14]
Smooth Quartz Slab‌[upcoming: JE 1.14]	smooth_quartz_slab‌[upcoming: JE 1.14]
Cut Sandstone Slab‌[upcoming: JE 1.14]	cut_sandstone_slab‌[upcoming: JE 1.14]
Cut Red Sandstone Slab‌[upcoming: JE 1.14]	cut_red_sandstone_slab‌[upcoming: JE 1.14]

Bedrock Edition:

Block	Name ID	Numeric ID
Double Stone-type Slabs (smooth stone through nether bricks)	double_stone_slab	43
Stone-type Slabs (smooth stone through nether brick)	stone_slab	44
Double Wooden Slabs	double_wooden_slab	157
Wooden Slabs	wooden_slab	158
Other Double Stone-type Slabs (red sandstone through red nether brick)	double_stone_slab2	181
Other Stone-type Slabs (red sandstone through(red nether brick)	stone_slab2	182
Different Stone-type Slabs (end stone brick through polished granite)	stone_slab3	417
More Stone-type Slabs (mossy stone brick through cut red sandstone)	stone_slab4	421
Different Double Stone-type Slabs (end stone brick through polished granite)	double_stone_slab3	422
More Double Stone-type Slabs (mossy stone brick through cut red sandstone)	double_stone_slab4	423

Block data

See also: Data values

In Bedrock Edition, slabs use the following data values:

Double stone slab

	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 Quartz Slab
	7	Double Nether Brick Slab

Double stone slab 2

	DV	Description
	0	Double Red Sandstone Slab
	1	Double Purpur Slab
	2	Double Prismarine Slab
	3	Double Prismarine Brick Slab
	4	Double Dark Prismarine Slab
	5	Double Mossy cobblestone Slab
	6	Double Smooth Sandstone Slab
	7	Double Red Nether Brick Slab

Double stone slab 3

	DV	Description
	0	Double End Stone Brick Slab
	1	Double Smooth Red Sandstone Slab
	2	Double Polished Andesite Slab
	3	Double Andesite Slab
	4	Double Diorite Slab
	5	Double Polished Diorite Slab
	6	Double Granite Slab
	7	Double Polished Granite Slab

Double stone slab 4

	DV	Description
	0	Double Mossy Stone Brick Slab
	1	Double Smooth Quartz Slab
	2	Double Stone Slab
	3	Double Cut Sandstone Slab
	4	Double Cut Red Sandstone Slab

Stone slab

	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

Stone slab 2

	DV	Description
	0	Red Sandstone Slab
	1	Purpur Slab
	2	Prismarine Slab
	3	Prismarine Brick Slab
	4	Dark Prismarine Slab
	5	Mossy cobblestone Slab
	6	Smooth Sandstone Slab
	7	Red Nether Brick Slab
	8	Upper Red Sandstone Slab
	9	Upper Purpur Slab
	10	Upper Prismarine Slab
	11	Upper Prismarine Brick Slab
	12	Upper Dark Prismarine Slab
	13	Upper Mossy cobblestone Slab
	14	Upper Smooth Sandstone Slab
	15	Upper Red Nether Brick Slab

Stone slab 3

	DV	Description
	0	End Stone Brick Slab
	1	Smooth Red Sandstone Slab
	2	Polished Andesite Slab
	3	Andesite Slab
	4	Diorite Slab
	5	Polished Diorite Slab
	6	Granite Slab
	7	Polished Granite Slab
	8	Upper End Stone Brick Slab
	9	Upper Smooth Red Sandstone Slab
	10	Upper Polished Andesite Slab
	11	Upper Andesite Slab
	12	Upper Diorite Slab
	13	Upper Polished Diorite Slab
	14	Upper Granite Slab
	15	Upper Polished Granite Slab

Stone slab 4

	DV	Description
	0	Mossy Stone Brick Slab
	1	Smooth Quartz Slab
	2	Stone Slab
	3	Cut Sandstone Slab
	4	Cut Red Sandstone Slab
	8	Upper Mossy Stone Brick Slab
	9	Upper Smooth Quartz Slab
	10	Upper Stone Slab
	11	Upper Cut Sandstone Slab
	12	Upper Cut Red Sandstone Slab

Double wood slab

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

Wood slab

	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

Block states

See also: Block states

Java Edition:

Name	Default value	Allowed values	Description
type	bottom	bottom top	Where the slab is within its block.
		double	The block is a double slab.
waterlogged	false	false true	Whether or not there's water in the same place as this slab.

Video

Note: This video is outdated, as red sandstone slabs were added in 1.8, purpur slabs were added in 1.9, and prismarine slabs were added in 1.13.

History

Java Edition Classic
May 17, 2009					Slabs were suggested on the TIGSource forums.
October 22, 2009					Dirt slabs were shown in a blog post.
October 23, 2009					Notch says the new half block has nearly been finished and gives a video.
0.27 SURVIVAL TEST					Stone slabs have now been introduced to the game.
					Stone slabs can be obtained by mining coal ore because of the lack of inventory and crafting.
					Slabs were originally called stairs.
Java Edition Indev
0.31			2010-01-29		Slabs have now received a crafting recipe: 3 slabs from 3 cobblestone.
					Slabs are now no longer dropped from coal ore.
Java Edition Infdev
June 29, 2010					Renamed stairs to slabs.[verify]
Java Edition 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 have to be mined with a pickaxe to collect, were not affected by fire, and had stronger blast resistance than planks, making them a useful building material. On current versions, this slab can be obtained from the Creative inventory or by using commands. The item tooltip will now say "Petrified Oak Slab" rather than "Oak Slab".
					Before the additional slabs were added, a double stone slab would only yield one slab when broken. Since this update, all double slabs will now 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 has now 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.
1.7					Bottom slabs will now use the bottom half of the double slab texture rather than the top.
					The texture of the cobblestone slab has now been updated.
1.8			?		Added the stone brick, bricks, and smooth stone double slab. (Smooth stone double slab are only obtainable through inventory editing.)
					The sprinting feature has been added in this update. While stairs will the player's sprinting, slabs allow a player to continue sprinting.
Java Edition
1.0.0			Beta 1.9 Prerelease 5		The textures of bricks and planks have now been updated, and by extension that of the slabs.
1.2.1			1.2-pre		All types of slabs are now able to be placed upside down and under blocks; these occupy the top half of their block space rather than the bottom half.
					The crafting recipe has now been 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 have now been added for the four different types of wood planks, replacing the old wooden oak/"stone" slab. These new slabs are vulnerable to fire, and can be collected faster with an axe than with a pickaxe. Wooden slabs already crafted or placed in the world will remain the old 'stone' type.
			12w21a		Sandstone slabs will 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 will now interact properly with lighting.
					When slabs are placed upside down, they will now accept light from light sources themselves, and no longer block light to surrounding blocks.
					Slabs will now no longer cast the shadow of a full-sized block.
1.4.6			November 28, 2012		Jeb tweeted a picture of himself crafting nether brick slabs.
			12w49a		Added nether brick slabs, which has now caused 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.
			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, has now been removed from the game. Its data values have been replaced with the nether quartz slab.
			13w04a		The smooth stone double slab has now been re-implemented with a data value of 43:8.
					The smooth sandstone double slab has now been added, with a data value of 43:9.
					Seamless data values of 43:10-43:15 have now been added, but are unused and appear identical to their normal counterparts.
			13w09c		Quartz slabs and double slabs will now use the top, side and bottom textures of the block of quartz.
					The quartz slab's seamless counterpart, with a data value of 43:15, retains the top texture on all 6 sides.
			?		The texture of sandstone slabs have now been changed 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.
					Stone slabs can now be crafted using granite, diorite, andesite, or their polished counterparts.
			14w25a		Double stone slabs and double wooden slabs can now no longer be obtained as an item.
			14w32a		Added red sandstone slabs and double slabs, as well as smooth red sandstone double slabs.
					Armor stands are now crafted using any slab.
			14w32b		Armor stands can now only be crafted using stone slabs.
			14w33a		Stone slabs can now 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 will now act as the middle of a table generated within igloo basements.
1.11			16w39a		Oak, birch, spruce, stone, and cobblestone slabs will now generate in woodland mansions.
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 now been split up and merged into their own IDs depending on variant.
					Old non-flammable wooden slabs, which are now called "Petrified oak slabs", have been re-implemented into the creative inventory.
					"Bricks slab" has now been renamed to "Brick slab".
					"Stone bricks slab" has been renamed to "Stone brick slab".
					<Wood type> wood slab has now been renamed to <wood type> slab.
					Smooth double slabs, now smooth blocks, have added to the creative inventory. Smooth blocks will 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.
April 17, 2018					Dinnerbone confirms that 1.14 will contain many new stairs and slabs.
1.13			18w20a		Changed the name of "Prismarine Bricks Slab" to "Prismarine Brick Slab."
1.13.1			18w32a		Purpur slabs can now be crafted with purpur pillars.
October 10, 2018					Dinnerbone tweets that there will be 14 new slabs.
October 10, 2018					Polished diorite slabs are tweeted out by LadyAgnes.
Upcoming Java Edition
1.14			18w43a		Added andesite, polished andesite, diorite, polished diorite, granite, polished granite, mossy stone brick slab, mossy cobblestone, smooth sandstone, smooth red sandstone, smooth quartz, red nether brick, end stone brick slabs.
					Renamed "Stone Slab" to "Smooth Stone Slab".
			18w48a		Stone slabs are now use to craft grindstones.
			18w50a		Wood slabs are now used to craft barrels.
			19w02a		Wood slabs are now used to craft lecterns.
			19w12a		Added cut sandstone and cut red sandstone 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 now be placed on the top half of blocks.
					The recipes for crafting slabs will now give 6 slabs, instead of 3 slabs.
0.7.3					Added quartz slabs.
					Wooden slabs can now be 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.
					Stone slabs will 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.
					Sandstone slabs will now generate in desert temples.
0.14.0			build 1		Added red sandstone slabs.
0.14.2					The nether brick slab texture has now been brightened.
Pocket Edition
1.0.0			alpha 0.17.0.1		Added purpur slabs.
					A spruce slab will now act as the middle of a table generated within igloo basements.
1.1.0			alpha 1.1.0.0		Oak, birch, spruce, stone, and cobblestone slabs will now generate in woodland mansions.
Bedrock Edition
1.2.0			beta 1.2.0.2		Stone slabs are now used to craft armor stands.
1.4.0			beta 1.2.13.8		Added slabs for prismarine, prismarine brick and dark prismarine as part of Experimental Gameplay.
			beta 1.2.14.2		The slabs for prismarine, prismarine brick, and dark prismarine have now been fully implemented.
1.9.0			beta 1.9.0.0		"Stone Slab" has now been renamed to "Smooth Stone Slab".
					Added stone, andesite, polished andesite, diorite, polished diorite, granite, polished granite, mossy stone brick, mossy cobblestone, smooth sandstone, cut sandstone, smooth red sandstone, cut red sandstone, smooth quartz, red nether brick, and end stone brick slabs.
					Sandstone and red sandstone slabs can now only be crafted using regular sandstone.
					Smooth stone slabs will now require smooth stone to craft them.
1.10.0			beta 1.10.0.3		Cobblestone, mossy cobblestone, and dark oak slab generate in pillager outpost.
					Smooth sandstone slab now generate in new desert villages.
					Wood slab can be used to craft composter, barrel, and lectern.
					Stone slab can be used to craft grindstone.
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.
					Wooden slabs crafted during and after this update are now flammable and are broken with an axe instead of a pickaxe. Existing slabs (which have stone properties) are not stackable with the new slabs.
TU12					Added jungle wood slabs.
					Slabs can now be placed upside down.
					Items can now be placed directly on upside down slabs.
TU14		1.04			Added quartz slabs.
					The placement of half blocks and other blocks on half blocks has now been changed.
					The placement of upside down slabs has now been changed.
TU27	CU15	1.18			Added acacia and dark oak wood slabs to the creative inventory.
TU46	CU36	1.38	Patch 15		Added purpur slabs.
TU69		1.76	Patch 38		Added slabs for prismarine, prismarine bricks and dark prismarine.
PlayStation 4 Edition
1.88					Added andesite, polished andesite, diorite, polished diorite, granite, polished granite, mossy stone brick slab, mossy cobblestone, smooth sandstone, smooth red sandstone, smooth quartz, red nether brick, end stone brick slabs.
					Renamed "Stone Slab" to "Smooth Stone Slab".
New Nintendo 3DS Edition
1.7.10					Added purpur slabs.

Issues

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

Trivia

• 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.^{[until JE 1.14]}
  • 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 1×1 dents in a flat floor using slabs are darkened as one would expect, 1×1 dents created using 2×1 or 2×2 stairs will darken less, due to having fewer surrounding solid blocks.
• 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, but is an intentional feature in Bedrock Edition.

Gallery

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  Brick slabs.

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  Stone brick slabs.

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  Double smooth stone slab (left) compared to smooth stone.

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  Naturally occurring smooth stone slabs in a butcher shop.

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  Naturally occurring smoot stone slabs in a village blacksmith.

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  First image of upside down slabs as shown on Jeb's Twitter.

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  Slabs used to create the impression of half-aligned full blocks.

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  All six types of wooden slabs.

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  Trapdoors on slabs.

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  Example of slab shelving by placing slabs below other slabs.

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  Smooth sandstone compared to smooth stone.

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  A petrified oak slab house with a netherrack fireplace.

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  Light passing through the sides of a brick slab from above. A normal block would render complete darkness.^{[until JE 1.14]}

• 

  Fake wooden slabs.

References

Redstone

View at: Template:Redstone/content [edit]

Blocks

View at: Template:Blocks/content [edit]