Slab Light
🟡 Updated this year⚠️ Install Order · 2 steps
Install in this order, then this mod last — most mods fail to load without their framework and dependencies in place.
🖼️ Gallery (5 images)
🔍 Analysis
- 🏆 #195 of 211 decoration mods in this game by downloads
📋 About This Mod
**Slab Light** is a small Fabric mod that changes how light interacts with slabs and stairs in Java to match Bedrock behavior. In vanilla Java, slabs and stairs have directional light opacity - their solid faces block light from passing through. For example, a torch placed below a bottom slab won't light up the space above it, because the slab's solid bottom face blocks upward light propagation. In Bedrock, slabs and stairs don't block light at all - light passes freely through them in every direction. This mod removes that directional restriction for single slabs and stairs, so light behaves the same way it does on Bedrock. Double slabs (full blocks) are unaffected. Here's what's new in 1.2.0: Three new commands (require op level 2): /slablight on — enables the mod, relights chunks around all online players /slablight off — disables the mod, relights to restore vanilla lighting /slablight status — shows whether it's currently on or off _**Requires Fabric API.**_ **Known Issues:** Removing the mod from an existing world will not revert lighting on already-built structures — light values are baked into the world save by Minecraft. Only newly placed blocks will revert to vanilla Java behaviour. If you want to support my work: https://account.venmo.com/u/lefthandedleaf https://buymeacoffee.com/lefthandedleaf
Slab Light is a small Fabric mod that changes how light interacts with slabs and stairs in Java to match Bedrock behavior.
In vanilla Java, slabs and stairs have directional light opacity - their solid faces block light from passing through. For example, a torch placed below a bottom slab won't light up the space above it, because the slab's solid bottom face blocks upward light propagation.
In Bedrock, slabs and stairs don't block light at all - light passes freely through them in every direction.
This mod removes that directional restriction for single slabs and stairs, so light behaves the same way it does on Bedrock. Double slabs (full blocks) are unaffected.
Here's what's new in 1. 2. 0: Three new commands (require op level 2):
/slablight on — enables the mod, relights chunks around all online players
/slablight off — disables the mod, relights to restore vanilla lighting
/slablight status — shows whether it's currently on or off
_Requires Fabric API._
Known Issues:
Removing the mod from an existing world will not revert lighting on already-built structures — light values are baked into the world save by Minecraft. Only newly placed blocks will revert to vanilla Java behaviour.
If you want to support my work:
https://account.venmo.com/u/lefthandedleaf https://buymeacoffee.com/lefthandedleaf
📊 Mod Details
- Game
- Minecraft Mods
- Author
- lefthandedleaf
- Version
- 2.0.0
- Downloads
- 245
- Endorsements
- 2
- Category
- decoration
- Created
- 5/28/2026
- Updated
- 8/13/2026
- Game Versions
- 26.2
- Tags
- decoration, game-mechanics
🔧 How to Install Minecraft Mods Mods
Download from Modrinth. Use Prism Launcher or drop into your mods folder.
📖 Full step-by-step install guide for Minecraft Mods →
Visit the official mod page for specific installation instructions for this mod.
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❓ Frequently Asked Questions
Which Minecraft Mods versions does Slab Light support?
The author lists 26.2. Other versions may work but are untested by the author.
What is the latest version of Slab Light?
Version 2.0.0, published 2026-08-13 with 245 downloads recorded at the source.
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