Grunge Map Generator

Grunge Map Generator

Generate procedural grunge textures for masking, blending, and surface detailing. Create dirt, rust, scratches, concrete, cracks, B&W spots, and grime maps. Seamless tiling, real-time preview, and 7 download formats.

Grunge Settings

Micro-Grit & Dust
Micro-Grit & Dust
Raw Concrete
Vertical Leaks
Surface Scratches
Flaking Paint
512 x 512
256 x 256
512 x 512
1024 x 1024
1024 x 1024
512 x 512
1024 x 1024
2048 x 2048
4096 x 4096
PNG (instant)
PNG (instant)
JPEG (instant)
WebP (instant)
TIFF (server)
BMP (server)
AVIF (server)
EXR (server)

Preview

Preview (scaled to fit)

Grunge Map Types

Dirt / Grime

Organic accumulation patterns with soft falloff edges. Perfect for ground dirt, dust buildup, and general surface aging in environments and props.

B&W Spots

High-contrast spot clusters with sharp boundaries. Ideal for paint peeling, mold spots, water damage, and stylized wear patterns.

Rust / Corrosion

Irregular pitted surfaces with organic spreading patterns. Great for metal corrosion, oxidation, and weathered industrial materials.

Scratches

Directional line damage with variable intensity and clustering. Use for worn metal, scuffed plastic, scratched glass, and weathered wood.

Concrete

Dense surface pitting and aggregate exposure. Excellent for concrete wear, asphalt degradation, stone erosion, and plaster damage.

Glass Cracks

Radial fracture patterns with branching tendrils. Perfect for shattered glass, ice cracks, ceramic breaks, and impact damage maps.

How to Use Grunge Maps

1

Choose a Grunge Type

Select from dirt, spots, rust, scratches, concrete, or glass cracks. Each has unique parameters optimized for that wear pattern.

2

Tune Density & Falloff

Adjust density for how much grunge covers the surface. Use falloff to control edge softness low values create crisp masks, high values blend smoothly.

3

Apply in Your Engine

Use grunge maps as roughness multipliers, blend masks between clean/dirty materials, or opacity maps for edge wear. Works in Blender, Unreal, Unity, and Substance.

Related Texture Tools

Combine grunge maps with our other free texture tools for complete material authoring.

Noise Generator
Perlin, Voronoi, and Worley noise textures.
Texture Channel Mixer
Pack roughness, metallic, and AO into a single RGB texture.
Seamless Texture Maker
Make any image tileable with edge-blending and live preview.
Color Correction
Adjust brightness, contrast, saturation, and hue.
Checker Pattern Generator
Customizable UV checker textures.
Image to PBR
Generate full PBR material maps from a base color image.
FAQ

Frequently Asked Questions

A grunge map is a grayscale texture that adds wear, dirt, and surface imperfections to 3D materials. In PBR shaders, grunge maps are typically multiplied with roughness to add surface variation, used as blend masks between clean and dirty materials, or applied to opacity channels for edge wear effects.
Yes. All grunge maps generated with this tool are seamless and tileable by default. Edges match perfectly when repeated across large surfaces, making them ideal for game environments, architectural visualization, and VFX work.
Multiply grunge maps with your roughness channel to add surface variation. Use them as blend masks between clean and dirty materials. Apply to opacity for edge wear. They work as standard grayscale textures in Blender (Mix RGB node), Unreal Engine (Material Blend), Unity (Lerp), and Substance Painter (mask stack).
Falloff controls how sharply grunge patches transition at their edges. Low falloff (0.0–0.2) creates crisp, hard-edged patches — ideal for paint peeling, cracks, and scratches. High falloff (0.5–1.0) blends patches smoothly perfect for dirt accumulation and subtle surface aging.
Yes. Set Density to 2–4, Intensity to 0.5–0.8, and Falloff to 0.6–0.9 to create soft, brush-stroke-like grunge patterns. The Dirt and Rust types with higher falloff values produce natural brush-like distribution that works well for stylized wear and digital painting overlays.
Grunge maps work universally as standard grayscale images. Use them in Blender (Node Editor), Unreal Engine 5 (Material Graph), Unity (Shader Graph), Maya/3ds Max (Hypershade), Substance Painter/Designer, Marmoset Toolbag, Houdini, and any 3D software that supports texture maps. PNG format works everywhere.