Vertical slabs

Vertical slabs for each vanilla slab

7.4K Downloads

fabricdecoration

Rent Server with this Mod

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About this Mod

This mod adds vertical slabs for each vanilla slab.

They can be waterlogged, placed in pairs as a full block and in the four different orientations, just as regular slabs but vertically.

Vertical slabs can be crafted from regular slabs in a crafting grid and can be crafted back to regular slabs.

Available Versions

Vertical slabs 2.1.3-26.1release

MC 26.1fabric

March 24, 2026

Vertical slabs 2.1.3-1.21.11release

MC 1.21.11fabric

December 15, 2025

Vertical slabs 2.1.3 for 1.21.5 to 1.21.10release

MC 1.21.5, 1.21.6, 1.21.7, 1.21.8, 1.21.9, 1.21.10fabric

May 12, 2025

Vertical slabs 2.1.2 for 1.21.4release

MC 1.21.4fabric

February 26, 2025

2.1.1release

MC 1.21, 1.21.1, 1.21.3, 1.21.4fabric

July 5, 2024

How to Install Vertical slabs on Your Server

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (26.1).

Install Mod

Open the mod browser in the dashboard and search for "Vertical slabs". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabric

Minecraft Versions

26.1, 1.21.11, 1.21.10 (+11 more)

Server-side

✓ Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Vertical slabs server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (26.1). You can switch loaders with one click in the panel.

Is Vertical slabs compatible with fabric?

Vertical slabs officially supports fabric for Minecraft 26.1, 1.21.11, 1.21.10. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Vertical slabs – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Vertical slabs consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.