Tips on Painting Stone Walls

I’m building the Kibri Roman Catholic Church and have decided to model it as a stone rather than a brick building. What are some ways to achieve a non-uniform / realistic coloration for the stone walls of the structure? My standard approach has been to use 4-5 different colors of gray and paint each brick a different color. However, this approach just isn’t feasible for a large structure made entirely of stone so I’m hoping someone can suggest an approach that uses washes, etc. Any and all ideas are much appreciated. Thanks.

Brad

The Woodland Scenics earthtone stains work well. This is a base coat of concrete with a couple darker colors thinned out and used as washes.

I tend to start with a darkish gray base and then drybrush on lighter shades of gray, brown, and tan.

Here on a resin stone arch bridge:

Here on Hydrocal castings:

Nick

Nice waterfall!

You could also paint a few individual stones before the washes and other weathering techniques. I have found that, like drawing a cartoon, features of a model that need to be “brought out” can be exaggerated. You’ve seen a cartoon of Nixon. The nose and eyebrows are greatly exaggerated. That’s what makes it a cartoon, and that’s what makes it look like Nixon.

So, IMHO, we can do the same thing with models. Yes, we could paint every stone in subtle shade variations. But I think the effort would be lost. I’d paint a few really dark ones, and a few really light ones, and maybe a few really colorful ones before the final steps.

Look in the open door of my Gaines Cannery (lower left) and you will see a bit of a stone wall. I used quite a variety of contrasting colors on it.

You could also “ruff it up” a bit with some ultra-fine sandpaper as a final step. The high stones would reveal some underlying colors. That’s what I did on the oven in this structure interior.

Also, try hitting some of the stones with gloss. Exaggerating variety is one thing that brings a model to life.

On my last stone wall, I tried a can of Rustoleum speckled paint. I used one that was light brown with dark speckles. Then I brushed it with a light wash of India Ink in water to bring out the highlights.

This is a turntable pit, but it’s just a hydrocal casting.