The Verdict: Concrete is a rigid, porous sponge that cannot survive the physics of Michiana's 42-inch average frost depth without eventually cracking and spalling. Travertine is stunning for indoor-outdoor transitions or covered lanais, but its porous nature makes it a fiscal liability when exposed to open-air freeze-thaw cycles. Interlocking Pavers , built on a deeply excavated, permeable base, create a flexible pavement system that rides the frost heave and settles flawle
