My concern with building a metal framed structure and coating it in wire, was to find a way
to trap the wire as part of a structural matrix with the coating. With burlap draped over the
wire with PC blown onto the burlap, the PC might stick to the burlap, but to get the burlap
then to adhere to the wire seems to me would require a mechanical bond like hog rings
every several inches or something. Same with the carpet. I was trying to emulate
ferrocement using fiber instead of steel, and quickening the pace of the process by being
able to dip the fiber (burlap) into a slurry and drape it over an armature instead of
meticulously suture expanded metal lath onto the wire armature. The fact that the slurry
sets up rock hard inside of half an hour also advances the pace of the process, as night
temps are still often below freezing and I didn't want to wait until later in the year to get
going on the project: freezing while setting up can often ruin cement based curing
processes.
John what about using your burlcrete as the shell. Then spraying successive layers of papercrete with borax and lime (relatively light high R value). Once you have your R value gradually switch your mix to a heavier mass oriented recipe and continue to spray layers or slipform which ever you find easiest. If your light papercrete is sandwiched between a hard sealed outer shell and a heavy almost adobe inner shell how can it smolder much less ignite?
Nick
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