A procedural damp concrete wall texture with some leakage.

With 5 bucks you get:

Three .png sets included with 4k resolution.
Files include:
-Albedo/Diffuse
-Normal
-Roughness/specular (Roughness also in inverted color)
-Height
-******t Occlusion
.sbs and .sbsar files included with key parameters exposed
Parameters:
-Cracks amount
-Coloring + hue, saturation, lightness
-Moisture control with the ability to turn them on/off

http://3dexport.com/cpalmroos