Slab Placement
Prevents placing double slabs and forces placing either top or bottom slabs
Screenshots
About this Mod
Fabric mod to prevent placing double slabs
This mod makes it easier for Redstone users to place top slabs and create slab towers.
Pressing U (or another keybind) will switch between placing top slabs, bottom slabs, and default behaviour.
Available Versions
How to Install Slab Placement 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 (1.20.2).
Install Mod
Open the mod browser in the dashboard and search for "Slab Placement". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.20.2, 1.20.1, 1.19.2
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Slab Placement 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 (1.20.2). You can switch loaders with one click in the panel.
Is Slab Placement compatible with fabric and quilt?
Slab Placement officially supports fabric, quilt for Minecraft 1.20.2, 1.20.1, 1.19.2. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Slab Placement – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Slab Placement 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.
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Install Slab Placement with just one click on your server.