An exterior porch is pictured. The tile is slate, which is a great looking, non-slip surface. It is less expensive than other options. However, beware that slate, by nature, is layered and can delaminate. Surface layers can chip off, depending upon the exact material. Although the cement may bond well to the deck, if the stone flakes off, the tile becomes loose. Probably not a good choice in freezing climates. I love it in SoCal.

Another option that will not delaminate? A harder surface?

Slate is great. Lots of colors to choose from and the material is hard. Good price. You just have to look closely at the batch. Some quarry batches are as solid as can be, others flake more. Too many other options to list. Find a good building supply yard, look in person and ask lots of questions. Try www.Sepulveda.com