# How do I add dirt or grunge onto materials?

**URL:** <https://forums.unrealengine.com/t/how-do-i-add-dirt-or-grunge-onto-materials/289892>\
**Category:** Rendering\
**Tags:** unreal-engine, question\
**Created:** [August 1, 2014, 6:25pm UTC](https://forums.unrealengine.com/t/how-do-i-add-dirt-or-grunge-onto-materials/289892 "2014-08-01T18:25:05Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Roel](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Roel](https://forums.unrealengine.com/u/Roel)\
**Post date:** [August 2, 2014, 10:56pm UTC](https://forums.unrealengine.com/t/how-do-i-add-dirt-or-grunge-onto-materials/289892/2 "2014-08-02T22:56:42Z")

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A good approach for this would be using Unreal’s new Layered Materials system. You could make a couple of different dirt/dust materials and for each object you could make a mask, and within a layer material blend between the two.

Here are some links:

> **[Layered Materials](https://docs.unrealengine.com/5.0/en-US/layering-materials-in-unreal-engine/)**
>
> Two methods for layering Materials to create complex, unique surfaces.

> **[A new, community-hosted Unreal Engine Wiki](https://forums.unrealengine.com/t/a-new-community-hosted-unreal-engine-wiki/141494)**
>
> After over a year in maintenance mode, the official Unreal Engine Wiki is now permanently offline. These resources now live on a new community-run Unreal Engine Community Wiki — ue4community.wiki! You will be able to find content from the official...

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