I use the vegetable oil because that is what I have available and it works. There is very little in the mix as I make it stiff and brush it on. I am not familiar with the flammability characteristics of mineral oil. I will do more experimenting before I do my house. I am at this point leaning toward framing the house and sheeting and roofing it with OSB board then putting the blocks on the outside. I have poured a wide foundation that will accomodate the framing and the 16" wide blocks. If I run out of money I will use the blocks alone for the walls.I will put an earthen plaster on the inside and that should help with the flammability factor as well. --- On Sun, 10/28/12, clydetcurry@yahoo.com <clydetcurry@yahoo.com> wrote:
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