GordonThree wrote:
The stuff that came up when I googled Darco was fiberglass cloth for industrial welding applications, rated to 1000°F. Surely that's not the stuff being used on the bottoms of RVs? I guess if the glass fibers were thin enough they would cut with a steel knife, but it felt more like plastic as I cut it than glass... fireproof fiberglass cloth seems a bit high end for the rather cheap way they build RVs.
Darco cloth
Kind of doubt that..
Most likely is Tyvek.. Like the house wrap but only it is is dyed black..
TYVEK
