In anticipation of having a working sewing machine again, i've been reviewing my queue of projects. I have been planning on sewing a silnylon tipi to replace my disintegrating silnylon Kifaru knockoff, and had actually started the prototype, but the sag on the tent after a night of condensation is unbelievable. i seem to recall that coated nylon doesn't have the sagging problem.

is a 1.9 oz pu-coated ripstop the lightest i can get while avoiding the sag?