The Underlay Mod for Minecraft 1.21.10 gives players a simple yet powerful building feature: the ability to place carpets and other items beneath blocks that normally wouldn’t allow it. Want to put a carpet under a bed, chest, torch, or even a staircase? With this mod, it’s as easy as right-clicking the block face with the item you want to position.
Swapping or removing overlays is just as straightforward: right-click with a new item to replace the old one, or left-click to clear it entirely. Best of all, the system works seamlessly in Survival mode, making it practical for both creative builds and regular gameplay.
By default, the mod supports overlays like buttons, rails, slabs, trapdoors, carpets, and pressure plates, but it can also be expanded further. Through datapacks, players and developers can extend functionality to other blocks — imagine placing grass or other decorative elements in the same space as another object.
Essentially, Underlay allows you to combine two items within the same block space, opening up brand-new design possibilities for creative builders. If you’ve ever wanted more flexibility in decorating your Minecraft world, downloading Underlay Mod for Minecraft 1.21.10 is the way to go.
How To Download Underlay Mod 1.21.10
This Minecraft mod is fully compatible with Minecraft 1.21.10 and all currently available versions. Keep in mind that each mod requires a different loader. This mod requires you to have Fabric.
- Scroll down to the download section where you’ll find two links: one for the Underlay and another for Fabric.
- Download both files. Let’s start with the first one as an example.
- Click on the link provided.
- It will immediately take you to the website where you can finally download the mod.
- In the download section, select the correct Minecraft version and click “Download.”
- Save the file to your desktop. Repeat the process for the second link.
- For more detailed instructions, check out my article on How to Install Mods in Minecraft.
How To Install Underlay Mod 1.21.10
First thing first, check that you have both files on the desktop.
- Open the Windows Search Bar, located in the bottom left corner of your screen.
- Type
%appdata%
and press Enter. - This will open the Roaming folder. Locate and open the
.Minecraft
folder. - Scroll down and open the
mods
folder. - Drag and drop the Underlay Mod 1.21.10 into the
mods
folder. - Next, we need to install Fabric.
- Return to your desktop.
- Agree to the terms and conditions, then click “Install.”
- Launch the Minecraft Launcher, select the correct version, and enjoy your game!
Underlay Mod – Download Links
[1.21.x – 1.20.x] Underlay Mod for Minecraft
[1.21.x – 1.20.x] Fabric for Minecraft