Vertical Slabs
by Vanderflys
With Vertical Slabs, a player can place slabs on the side of a block, so a wall or column can be built with a vertical half-block.
What it does
Vertical Slabs adds a vertical form of slab that sits against a block face instead of lying flat. A crafting tool, the Vertical Slabs Converter, handles the conversion: holding it in the main hand lets a player convert, edit or remove vertical slabs. A vertical slab has the hitbox of a full-sized block, and it can be rotated clockwise to face a different direction. Building against a vertical slab is blocked, so the slab acts as a finished surface.
The mod is aimed at decoration builds, where its purpose is to make a structure's walls and facades look more detailed. It is a Decoration mod with a Utility component, and it is published for Fabric, Forge, NeoForge and Quilt, with a Data pack build for server platforms. Builds cover 1.20.2 – 26.3, and the latest file targets 26.3. The server needs the mod, and a client may leave it out. The code is open source under the Apache License 2.0, and the source code, issue tracker and wiki are public.
Key features
Vertical slab blocks
Slabs can be placed vertically against a block face, giving walls and columns a half-block detail.
Slab converter tool
The Vertical Slabs Converter converts, edits and removes vertical slabs, and works when held in the main hand.
Full-sized hitbox
A vertical slab keeps the collision of a full-sized block, so it behaves like a solid part of the wall.
Rotation and blocking
Vertical slabs rotate clockwise, and building against one is not allowed, which keeps finished surfaces intact.
Gallery
Compatibility
Latest build for each game version and loader.
26.x5 of 5 versions with builds
1.21.x10 of 10 versions with builds
1.20.x3 of 3 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Facades and columns
Builders can add vertical half-blocks to walls and pillars to break up flat surfaces in houses and towers.
Who it’s for: Builders working on decorative structures who want vertical half-slabs. Server owners install the mod on the server, and players join without it when the client is optional.
How it compares
Better Slab is client and server, open source under the GNU Lesser General Public License v3.0 only, and published for 1.18.2 – 1.21.1 on Fabric, Forge and NeoForge. Full Slabs is client and server, open source under the MIT License, and covers 1.16.5 – 1.21.10 on Fabric and NeoForge. Vertical Slabs runs server required with optional clients, and its builds reach 26.3.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Vertical Slabs | Fabric, Forge, NeoForge and Quilt | 1.20.2 – 26.3 | Server required, client optional | 2026-10-01 |
| Better Slab | Fabric, Forge and NeoForge | 1.18.2 – 1.21.1 | Client and server | 2026-07-14 |
| Full Slabs | Fabric and NeoForge | 1.16.5 – 1.21.10 | Client and server | 2025-12-01 |
Questions
Does Vertical Slabs need to be on the client?
Which loaders does Vertical Slabs support?
How does a player convert an existing slab?
In the catalog
Vertical Slabs is one of 12,078 Decoration mods on ModsFinder, and one of 6,982 Decoration mods for Fabric. 8,071 mods support Minecraft 26.3.
More from Vanderflys
Similar mods
Official listing
- Modrinth page
- modrinth.com/mod/vertical-slabs
- Owner
- Vanderflys
- Published
- 2023-12-10
- Updated on Modrinth
- 2026-10-01
- Facts verified
- 2026-10-15