Fibreglass E Glass 23gsm
This incredibly light woven glass fibre reinforcement, at only 23gsm, is just about as light a fabric as can be laminated by hand. Even off the roll the fabric is almost transparent and incredibly thin.
Such a light fabric is used almost exclusively by radio controlled aircraft builders and U.A.V. (Unmanned Air Vehicle) builders wanting to laminate very thin skins of GRP onto aircraft wings and fuselages as a wing skin glass cloth or fibreglass wing skin.