Modscraper Modscraper Minecraft

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Underlay logo

Underlay

Mod

by Dooji

Place any block (such as carpets) inside anything!

Type

Mod

CurseForge Downloads

10,709,829

CurseForge ID

1263531

Modrinth Downloads

1,715,409

Modrinth ID

iltKD9qU

Last Updated

Nov 6, 2026

Description

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!

Preview

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)".

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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 Create, Jade and Flashback.

Compatibility

Mod Loaders

Client Neoforge Server

Game Versions

26.3

Recommended Gear

Affiliate

Hardware and extras that pair well with this mod.

LEGO Minecraft Set

LEGO Minecraft Set

Official sets that translate the building side of the game off-screen.

View on Amazon →
Mini PC for self-hosting

Mini PC for Self-Hosting

A low-power box that can sit in a cupboard and run a modded server around the clock.

View on Amazon →
Minecraft Enderman Character Plush

Minecraft Enderman Character Plush

Enderman plush toys, and a reliable gift for a younger player.

View on Amazon →

As an Amazon Associate I earn from qualifying purchases.

Screenshots

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External Resources

CurseForge Modrinth Source Code Wiki Issues