After years and years of using a myriad of bought terrain, my group is finally taking the plunge and making our own from foamcore. Our first one has turned out pretty good so far, but there's one thing I'm not sure on - how to get texture on the walls.
I've seen a ton of different ideas on the internet - mixing fine sand with paint, stucco, thin plaster, spackle, and textured paints. Some of the best I've seen used textured paints, but others with textured paints don't look so hot, so I'm not sure what's the best option. This forum has some of the best pieces I've seen so I definitely wanted to see what people here used.
For the experienced terrain-makers, what is your favorite way to make texture on the walls of ruins? If you have particular brand recommendations, that'd be appreciated, but any ideas would be welcome.