Applying glue mix to ballast material

It most definitely does, or perhaps the wetting agent allows the ballast to sink into the glue. In either case, it does what’s needed to bond the ballast in place. I’ve used that method many times, especially where an embankment is rather steep, but doesn’t need the ballast to be too deep.

Wayne

I don’t get any bare spots with that method.

Without any pre-wetting I apply the glue mix with a brush, shake the Woodland Scenics ballast generously over the area, and then vacuum up any loose ballast when the area is dry.

Rich