I am building a large elevated concrete deck off the main floor of my house in the mountains in Colorado. The reason for the concrete is for fire protection. Cracking of concrete in a freeze thaw environment is a problem so my plan is to use a Dietra membrane on top of the concrete. The membrane is supposed to prevent water from leaking through to the concrete and also to provide a flexible barrier between the concrete and the porcelain tile which will be set on top.

I have not been able to find any examples of houses that have this kind of a system. Elevated concrete decks with tile seem to be quite rare in a residential application in a cold winter climate.

I would love to hear from anyone who has experience with this kind of application. What do you think of the Dietra membrane? Are there any tips you can give me that will prevent cracking / popping on the the concrete and tiles either with or without membrane? Are there other products I should be aware of?

Thanks for your help!