Lavaloggable
by Skirata3222
Lavaloggable lets vanilla blocks that accept water also hold lava, including anvils, copper grates and iron bars, on Fabric for 1.21.4 and 1.21.10.
What it does
Lavalogging is a block state that lets a waterloggable block contain lava instead of water. The mod extends this to anvils, copper grates and iron bars, so these blocks can sit in a lava source without breaking. The list of eligible blocks is set in a config file, and a block can be added to it by its identifier.
The eligible-block list is read from the config on each side, so a server owner can choose which blocks lavalog in a multiplayer world while the client keeps the mod's default list. The mod is published for Fabric only, in two release versions, 1.21.4 and 1.21.10. Version 1.1.1 for 1.21.10 is the latest file, released on 2026-01-09.
Lavaloggable needs the client and the server to run it, and it is released under the Apache License 2.0, so the code is open source and its source and issue tracker are public. The mod was first published on 2025-11-10 and last updated on 2026-01-09.
Key features
Lavalogged anvils
Anvils accept lava in the same way vanilla blocks accept water, giving them a lavalogged state.
Copper grates and iron bars
Copper grates and iron bars can also hold lava, so lava can fill a grate or bar grid without destroying it.
Config-driven block list
The blocks that can be lavalogged are listed in a config file, which can be edited to add or remove entries.
Server-controlled eligibility
A server can set its own eligible-block list, separate from the default list used in singleplayer.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Builders who want lava-filled scenes with metal blocks, and server owners who want to control which blocks can hold lava on their world.
Questions
Does Lavaloggable need to be installed on the server?
Which blocks can hold lava with Lavaloggable?
Which game versions does Lavaloggable support?
In the catalog
Lavaloggable is one of 12,078 Decoration mods on ModsFinder, and one of 6,982 Decoration mods for Fabric. 15,569 mods support Minecraft 1.21.10.
Similar mods
What the author says
Q: How do I change which blocks are lavaloggable?\ A: As of version 1.1.0, blocks are now controlled by config file. Q: If my mod's eligible blocks list is different from my server's, what will happen?\ A: The mod will default to the server's eliglble list when in a multiplayer world.
Official listing
- Modrinth page
- modrinth.com/mod/lavaloggable
- Owner
- Skirata3222
- Published
- 2025-11-10
- Updated on Modrinth
- 2026-01-09
- Facts verified
- 2026-10-15