I have heard that concrete blocks can be dry stacked and surface bonded, producing a masonry wall that is superior to conventional mortar method. I live in Florida on sandy soil. I plan on building a geodesic dome home on a garage/basement (very high ground, good drainage), some of which will be below grade, due to the slope of the land. I want to do most of the work on this project myself. I'm not very proficient at laying mortared block; but I've heard of this alternative. After dry stacking the block to desired height, the walls are coated with a figerglass-reinforced cement coating. My walls will be a little higher than a standard garage/basement, to acheive a 9.5 ft. garage door opening for a boat clearance. Has anyone here used this system, or is familiar with it? Also, I would like to cover the outside of the block walls with about 2" of sheet foam, but have been told that termites like to tunnel in it. Are there foam sheets that are made with borate additive for termite protection? Would this be adhered to the block, and then covered with some sort of stuccco...or maybe even the bonding cement for the blocks? Any help on this matter would very welcome. David