I was just looking at this the other day for a project we're working on. Out of the 10 lbs or so per gallon, not all of that is solids; the solvents and some other additives will evaporate not to mention some lost to overspray. The percentage varies. It seems like 60% is a decent average, so 6lbs/gallon with about 2-3 gallons for a 15 meter glider? Call it 12-15 lbs?

P3