Well, the cost of the papercrete blocks as I have been building them is only the labor involved in making them. And I suppose a little fuel for the truck to pull the tow mixer although I run it on reclycled cooking oil and only use a little diesel fuel to start it and warm the oil in the auxillary tank. Combustibility? Well, the blocks will smolder and burn but they don't burst into flame. Plywood, OSB board, particle board and 2 by whatevers burn also and will go up like a torch when they get going enough. I am going to do some fire retardation on the blocks before I start to stack them for my house. That will add to the cost of building them, of course. I will post some pictures of my progress on my house when I get started with it. I stalled this summer for various reasons. I feel that I have learned a lot of things about papercrete from Gordon Solburg's? book and from this forum as well as from many on line sites. I do not advocate that the way I do the blocks is the only way or the right way, only that the cardboard is what I have and the blocks I make without cement or any other additives work for me. I experimented with cement mixes and clay and gravel and sand but I found out that the cardboard only method worked the best. I don't think that newsprint would work in the same manner and I'm not terrible worried about potential fire danger even if I didn't do any more to them as the smolder is very slow and in a stacked wall they would only get air for combustion on the surface. As I stated previously, a conventional stick frame structure, especially with trusses made with the cute little metal clips, once started, will burn much faster. I have no issue with Mr. Curry's building methods and I am actually quite impressed with the structures he has built. It is just not what will work for me. Also I have never been much of a record keeper but I know what I have to work with and it really doesn't matter what the final cost will be because I know for sure that it will be much cheaper than any other method I could use. Once again, what and how I'm doing this may not be for everyone but it works for me. --- On Fri, 10/26/12, JayH <slurryguy@yahoo.com> wrote:
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