Vertical Slabs Compat
Adds automatic compatibility for Quark's Vertical Slabs
About this Mod
Vertical Slabs Compat
Similar to Every Compat, this mods aims to fill in mod compatibility gaps by adding Quarks vertical slabs to all blocks that have a slab.
This work automatically and won't register ones that are already there
Altho it adds stuff for Quark the mod itself isnt required and you can also use it as standalone
This mod only purpose is to add vertical slabs so don't ask for vertical stairs or other micro blocks like crazyness like that. If you want those I suggest using this mod here
Available Versions
How to Install Vertical Slabs Compat 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 (1.20.1).
Install Mod
Open the mod browser in the dashboard and search for "Vertical Slabs Compat". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.20.1, 1.19.2, 1.19.1
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Vertical Slabs Compat 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 (1.20.1). You can switch loaders with one click in the panel.
Is Vertical Slabs Compat compatible with fabric and forge?
Vertical Slabs Compat officially supports fabric, forge for Minecraft 1.20.1, 1.19.2, 1.19.1. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Vertical Slabs Compat – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Vertical Slabs Compat 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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Rent Modded Server
Install Vertical Slabs Compat with just one click on your server.