Textures

After I uv  mapped by chimney (which took a very long while), I began the process of texturing.
Firstly, I started with the diffuse map

Before I got any texture down on my model, I put a base texture to work off. For the bricks I used a photograph that I took myself, for the slate I used a texture base image of CG Textures. (with the base textures down, I used it to create a specular map and normal map)

After the base image was down, I proceeded to add detail to the model

These are the normal map (I used CrazyBump to create the normal and spec map)

Normal map

Defuse map

Specular map

Once I got these done I was able to apply these to my model