The result is that each material will display different aging characteristics. Carrington materials will fade before they start to lose porosity. While, Porcher Marine materials are probably more porous than their counterparts once the color has faded. Lighter, stiffer more porous material for the cell walls like Carrington 1088, Porcher SO92 FM or Unitika 3670. It is not unheard of for a glider to use up to five kinds of sailcloth.
Manufacturers carefully select each material for optimum performance.