**Underlay** is a Minecraft mod that lets you place carpets (and more) under any block with space beneath it (e.g. chests, beds, signs, torches, etc.)!<\/p>\n
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!<\/p>\n
<\/p>\n
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)”.<\/p>\n
#### Join the Discord server for sneak peeks on upcoming updates!
\n<\/p>\n
—<\/p>\n
### How does this work?
\n**They are not block entities!**
\nUnderlay 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!<\/p>\n
### How to add support for more blocks (or exclude some)
\nIn your Minecraft folder you can find `config\/Underlay\/underlay.json`. Use `overlay_blocks` to add blocks, and `exclude_blocks` to exclude them, like this:
\n“`
\n{
\n “overlay_blocks”: [
\n “minecraft:short_grass”,
\n “mymod:shiny_block”
\n ],
\n “exclude_blocks”: [
\n “minecraft:oak_button”,
\n “minecraft:rail”
\n ]
\n}
\n“`<\/p>\n","protected":false},"excerpt":{"rendered":"
Place any block (such as carpets) inside anything!<\/p>\n","protected":false},"featured_media":162106,"template":"","meta":{"_minecraft_slug":"underlay","_minecraft_project_id":"iltKD9qU","_minecraft_author":"Dooji","_minecraft_license":"GPL-3.0-only","_minecraft_downloads":637029,"_minecraft_follows":407,"_minecraft_client_side":"required","_minecraft_server_side":"required","_minecraft_storage_type":"zip","_minecraft_archive_name":"underlay.zip","_minecraft_size_bytes":27789005,"_minecraft_version_count":94,"_minecraft_updated_at":"2026-05-16T15:50:39.135201Z","_minecraft_date_created":"2025-05-14T05:21:20.201419Z","_minecraft_date_modified":"2026-04-30T15:26:08.916240Z","_minecraft_project_url":"https:\/\/modrinth.com\/mod\/underlay","_minecraft_icon_attachment_id":162106,"_minecraft_imported_at":"2026-06-09T15:52:30+00:00","_minecraft_import_hash":"23bafe690ec9e56fd2c9639b93bb6264","_minecraft_versions":"","_minecraft_links":"","_minecraft_gallery":"","_minecraft_api_metadata":""},"mod_category":[156,97,104,89,158,92],"mod_loader":[99,106,160],"minecraft_version":[385,59,36,62,37,40,41,73,74,38,78,79,80,81,82,83,167,163,840],"class_list":["post-162105","mod","type-mod","status-publish","has-post-thumbnail","hentry","mod_category-decoration","mod_category-fabric","mod_category-forge","mod_category-game-mechanics","mod_category-neoforge","mod_category-utility","mod_loader-fabric","mod_loader-forge","mod_loader-neoforge","minecraft_version-1-12-2","minecraft_version-1-20","minecraft_version-1-20-1","minecraft_version-1-21","minecraft_version-1-21-1","minecraft_version-1-21-10","minecraft_version-1-21-11","minecraft_version-1-21-2","minecraft_version-1-21-3","minecraft_version-1-21-4","minecraft_version-1-21-5","minecraft_version-1-21-6","minecraft_version-1-21-7","minecraft_version-1-21-8","minecraft_version-1-21-9","minecraft_version-26-1","minecraft_version-26-1-1","minecraft_version-26-1-2","minecraft_version-26-2-snapshot-5"],"yoast_head":"\n