Insul-Deck

http://www.insul-deck.org/product.htm

We will have about 570 sq ft of deck around the house. We are going to use a (guess what) concrete decking solution for this. The company is called Insul-Deck. They invented this in the late 70s as a fast, light weight masonry flooring solution. It came pre-cut to our plans. It fits together in a tongue-n-groove fashion with rebar reinforcement. They pour the concrete on top of the decking. The channels allow you to run plumbing and electrical through the floor if you used it inside the house. We are going to try one of the DIY acid concrete stains for the finish.

This also means there will not be any water coming through the deck. That will be nice for the back patio that will be covered by the deck. We still have to design some handrails we like.