Ijust had an Architect buddy tell me about a hardscaper who uses concrete as paver edge restraint. This contractor convinced the customer that snap- edging becomes brittle in weather and breaks easily, whereas the concrete lasts Eons or whatever. My friend explained that the concrete is not just against the edge, but under the edge as well.....??......I think it would be just the opposite. I think this has no validity, but I thought I'd run it by you guys. How do you use it if you are one who believes this?