Slab

Slab

Stone Slab BEAndesite Slab BEPolished Andesite Slab BEDiorite Slab BEPolished Diorite Slab BEGranite Slab BEPolished Granite Slab BEMossy Stone Brick Slab BEMossy Cobblestone Slab BESmooth Sandstone Slab BESmooth Red Sandstone Slab BESmooth Quartz Slab BERed Nether Brick Slab BEEnd Stone Brick Slab BECut Sandstone SlabCut Red Sandstone Slab

Transparent	Double slab: No Single slab: Partial (blocks light)
Luminance	0
Blast resistance	Wood: 15 Stone: 30
Tools
Renewable	Stone: Yes Wood: Yes (except Petrified Oak) 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 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
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

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.

Dark Oak and Mossy Cobblestone slab generate in pillager outpost.‌^{[upcoming 1.14]}

Creative inventory

Smooth blocks can be found in Creative inventory.

Usage

Placement

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.

Behavior

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 be waterlogged if the block it is in was a source block. If the slab is placed in flowing water 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.

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	ID Name
Red Sandstone Slab	red_sandstone_slab
Purpur Slab	purpur_slab
Stone Slab‌[until 1.14] Smooth Stone Slab‌[upcoming 1.14]	stone_slab‌[until 1.14] smooth_stone_slab‌[upcoming 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 1.14]	stone_slab‌[upcoming 1.14]
Granite Slab‌[upcoming 1.14]	granite_slab‌[upcoming 1.14]
Polished Granite Slab‌[upcoming 1.14]	polished_granite_slab‌[upcoming 1.14]
Diorite Slab‌[upcoming 1.14]	diorite_slab‌[upcoming 1.14]
Polished Diorite Slab‌[upcoming 1.14]	polished_diorite_slab‌[upcoming 1.14]
Andesite Slab‌[upcoming 1.14]	andesite_slab‌[upcoming 1.14]
Polished Andesite Slab‌[upcoming 1.14]	polished_andesite_slab‌[upcoming 1.14]
Red Nether Brick Slab‌[upcoming 1.14]	red_nether_brick_slab‌[upcoming 1.14]
End Stone Brick Slab‌[upcoming 1.14]	end_stone_brick_slab‌[upcoming 1.14]
Mossy Stone Brick Slab‌[upcoming 1.14]	mossy_stone_brick_slab‌[upcoming 1.14]
Mossy Cobblestone Slab‌[upcoming 1.14]	mossy_cobblestone_slab‌[upcoming 1.14]
Smooth Sandstone Slab‌[upcoming 1.14]	smooth_sandstone_slab‌[upcoming 1.14]
Smooth Red Sandstone Slab‌[upcoming 1.14]	smooth_red_sandstone_slab‌[upcoming 1.14]
Smooth Quartz Slab‌[upcoming 1.14]	smooth_quartz_slab‌[upcoming 1.14]

Bedrock Edition:

Block	ID Name	Numerical 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 dark prismarine‌[until BE 1.9](red nether brick‌[upcoming BE 1.9]))	double_stone_slab2	181
Other Stone-type Slabs (red sandstone through dark prismarine‌[until BE 1.9](red nether brick‌[upcoming BE 1.9]))	stone_slab2	182
Different Double Stone-type Slabs (end stone brick through polished granite)‌[upcoming BE 1.9]	double_stone_slab3‌[upcoming BE 1.9]	?
Different Stone-type Slabs (end stone brick through polished granite)‌[upcoming BE 1.9]	stone_slab3‌[upcoming BE 1.9]	?
More Double Stone-type Slabs (mossy stone brick through cut red sandstone)‌[upcoming BE 1.9]	double_stone_slab4‌[upcoming BE 1.9]	?
More Stone-type Slabs (mossy stone brick through cut red sandstone)‌[upcoming BE 1.9]	stone_slab4‌[upcoming BE 1.9]	?

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[upcoming BE 1.9]
	6	Double Smooth Sandstone Slab‌[upcoming BE 1.9]
	7	Double Red Nether Brick Slab‌[upcoming BE 1.9]

Double stone slab 3

	DV	Description
	0	Double End Stone Brick Slab‌[upcoming BE 1.9]
	1	Double Smooth Red Sandstone Slab‌[upcoming BE 1.9]
	2	Double Polished Andesite Slab‌[upcoming BE 1.9]
	3	Double Andesite Slab‌[upcoming BE 1.9]
	4	Double Diorite Slab‌[upcoming BE 1.9]
	5	Double Polished Diorite Slab‌[upcoming BE 1.9]
	6	Double Granite Slab‌[upcoming BE 1.9]
	7	Double Polished Granite Slab‌[upcoming BE 1.9]

Double stone slab 4

	DV	Description
	0	Double Mossy Stone Brick Slab‌[upcoming BE 1.9]
	1	Double Smooth Quartz Slab‌[upcoming BE 1.9]
	2	Double Stone Slab‌[upcoming BE 1.9]
	3	Double Cut Sandstone Slab‌[upcoming BE 1.9]
	4	Double Cut Red Sandstone Slab‌[upcoming BE 1.9]

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[upcoming BE 1.9]
	6	Smooth Sandstone Slab‌[upcoming BE 1.9]
	7	Red Nether Brick Slab‌[upcoming BE 1.9]
	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[upcoming BE 1.9]
	14	Upper Smooth Sandstone Slab‌[upcoming BE 1.9]
	15	Upper Red Nether Brick Slab‌[upcoming BE 1.9]

Stone slab 3

	DV	Description
	0	End Stone Brick Slab‌[upcoming BE 1.9]
	1	Smooth Red Sandstone Slab‌[upcoming BE 1.9]
	2	Polished Andesite Slab‌[upcoming BE 1.9]
	3	Andesite Slab‌[upcoming BE 1.9]
	4	Diorite Slab‌[upcoming BE 1.9]
	5	Polished Diorite Slab‌[upcoming BE 1.9]
	6	Granite Slab‌[upcoming BE 1.9]
	7	Polished Granite Slab‌[upcoming BE 1.9]
	8	Upper End Stone Brick Slab‌[upcoming BE 1.9]
	9	Upper Smooth Red Sandstone Slab‌[upcoming BE 1.9]
	10	Upper Polished Andesite Slab‌[upcoming BE 1.9]
	11	Upper Andesite Slab‌[upcoming BE 1.9]
	12	Upper Diorite Slab‌[upcoming BE 1.9]
	13	Upper Polished Diorite Slab‌[upcoming BE 1.9]
	14	Upper Granite Slab‌[upcoming BE 1.9]
	15	Upper Polished Granite Slab‌[upcoming BE 1.9]

Stone slab 4

	DV	Description
	0	Mossy Stone Brick Slab‌[upcoming BE 1.9]
	1	Smooth Quartz Slab‌[upcoming BE 1.9]
	2	Stone Slab‌[upcoming BE 1.9]
	3	Cut Sandstone Slab‌[upcoming BE 1.9]
	4	Cut Red Sandstone Slab‌[upcoming BE 1.9]
	8	Upper Mossy Stone Brick Slab‌[upcoming BE 1.9]
	9	Upper Smooth Quartz Slab‌[upcoming BE 1.9]
	10	Upper Stone Slab‌[upcoming BE 1.9]
	11	Upper Cut Sandstone Slab‌[upcoming BE 1.9]
	12	Upper Cut Red Sandstone Slab‌[upcoming BE 1.9]

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

Name	Value	Description
type	bottom top	Where the slab is within its block.
	double	The block is a double slab.
waterlogged	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.
0.26 (October 22, 2009, 1)					Dirt slab test.
0.26 (October 23, 2009, 2)					Half block has nearly been finished.
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			0.31 (January 29, 2010)		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.
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 will now the oak plank texture, the only plank type at the moment. Being variants of the stone slabs, they have 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 now say "Wooden Slab" rather than "Oak Wood Slab", and the item form is now a large full block with a missing texture.
					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.
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			alpha 0.17.0		Added purpur slabs.
					A spruce slab will now act as the middle of a table generated within igloo basements.
1.1			alpha 1.1.0.0		Oak, birch, spruce, stone, and cobblestone slabs will now generate in woodland mansions.
Bedrock Edition
1.2			beta 1.2.0.2		Stone slabs are now used to craft armor stands.
1.4			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.
Upcoming Bedrock Edition
1.9			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.
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.
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 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 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.
• 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

• 

  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.

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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 double slabs compared to smooth stone double slabs.

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  A wooden "stone" 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.

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  Fake wooden slabs.

References

Redstone

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Blocks

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