Underlay

⭐ ⭐ (486 endorsements) 📥 1.2M downloads 📌 v1.0.4 📅 5/14/2025
🟡 Updated this year

By Dooji · decoration

⬇ Download Mod Source: Modrinth ↗ 📅 Updated: 8/16/2026 📅 Created: 5/14/2025
⚠️ Install Order · 2 steps
1🛠️ Forge — Minecraft Forge (mod loader) Download ↗
2🛠️ Fabric — Fabric Loader Download ↗

Install in this order, then this mod last — most mods fail to load without their framework and dependencies in place.

🔍 Analysis

  • 👍 0.0% endorsement rate
  • 🏆 #268 of 435 decoration mods in this game by downloads

📋 About This Mod

**Underlay** is a Minecraft mod that lets you place carpets (and anything else) under any block with space beneath it (e.g. chests, beds, signs, torches, etc.)! Just **right click a block face with a block to place it**, (for example, under an upside-down stair), and you're done! Right click again with another item to replace it quickly, or left click it to remove it. Works in **Survival** too! !(https://i.postimg.cc/50nR26v0/ezgif-1478728b20dbf1.gif) By default, you can place the following blocks as overlays: carpets, trapdoors, buttons, rails, slabs and pressure plates. **To expand this to other blocks**, such as grass, see "How to add support for more blocks (or exclude some)". #### Join the Discord server for sneak peeks on upcoming updates! (https://img.shields.io/badge/Join%20now-Discord-7289DA?logo=discord&logoColor=white&style=plastic)](https://discord.gg/UPmnyM9YcY) --- ### How does this work? **They are not block entities!** Underlay adds these things called "overlays" ~~but they're really more like underlays xd~~, essentially they are fake versions of the item you place - which lets you place two things in the same block space! ### How to add support for more blocks (or exclude some) In your Minecraft folder you can find `config/Underlay/underlay.json`. Use `overlay_blocks` to add blocks, `exclude_blocks` to exclude them, and to not allow overlays to be placed on certain blocks use `target_exclude_blocks`, like this: ``` { "overlay_blocks": , "exclude_blocks": , "target_exclude_blocks": } ``` ### Mod Integration Some versions of Underlay include integration with (https://modrinth.com/mod/create), (https://modrinth.com/mod/jade) and (https://modrinth.com/mod/flashback).

Underlay is a Minecraft mod that lets you place carpets (and anything else) under any block with space beneath it (e.g. chests, beds, signs, torches, etc.)!

Just right click a block face with a block to place it, (for example, under an upside-down stair), and you're done! Right click again with another item to replace it quickly, or left click it to remove it. Works in Survival too!

!(https://i.postimg.cc/50nR26v0/ezgif-1478728b20dbf1.gif)

By default, you can place the following blocks as overlays: carpets, trapdoors, buttons, rails, slabs and pressure plates. To expand this to other blocks, such as grass, see "How to add support for more blocks (or exclude some)".

#### Join the Discord server for sneak peeks on upcoming updates! [!(https://img.shields.io/badge/Join%20now-Discord-7289DA?logo=discord&logoColor=white&style=plastic)](https://discord.gg/UPmnyM9YcY)

### How does this work? They are not block entities! Underlay adds these things called "overlays" ~~but they're really more like underlays xd~~, essentially they are fake versions of the item you place - which lets you place two things in the same block space!

### How to add support for more blocks (or exclude some) In your Minecraft folder you can find `config/Underlay/underlay.json`. Use `overlay_blocks` to add blocks, `exclude_blocks` to exclude them, and to not allow overlays to be placed on certain blocks use `target_exclude_blocks`, like this: ``` { "overlay_blocks": [ "minecraft:short_grass", "mymod:shiny_block" ], "exclude_blocks": [ "minecraft:oak_button", "minecraft:rail" ], "target_exclude_blocks": [ "minecraft:oak_door", "minecraft:spruce_door" ] } ```

### Mod Integration Some versions of Underlay include integration with (https://modrinth.com/mod/create), (https://modrinth.com/mod/jade) and (https://modrinth.com/mod/flashback).

🤖 AI-enhanced — based on mod data

📊 Mod Details

Game
Minecraft Mods
Author
Dooji
Version
1.0.4
Downloads
1,217,913
Endorsements
486
Category
decoration
Created
5/14/2025
Updated
8/16/2026
Game Versions
1.21.1
Tags
decoration, game-mechanics, utility

🔧 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.

🎮 Need cheat codes or console commands? Check ur gaming wiki for Minecraft Mods commands, item IDs, and more.

❓ Frequently Asked Questions

Which Minecraft Mods versions does Underlay support?

The author lists 1.21.1. Other versions may work but are untested by the author.

What is the latest version of Underlay?

Version 1.0.4, published 2026-08-16 with 1.2M downloads recorded at the source.

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