Originally Posted by Flightwerkz

Keith we did a test by spraying an entire can onto a piece of construction foam board and let it dry, the weight was a couple ounces for the entire can. And that was for an entire can. We use 2 cans in a 4 meter Leonardo which is 157" long. The weight is negligible.

The benefits to painting the inside of a jet has been very apparent to us beyond the simple esthetics. We have had fuel and smoke oil spill inside fuselages and with the painted interior using our normal Rustoleum Gloss grey which is now a standard for us at the shop, we save the fuselage from fuel impregnating into the fiberglass or airex. Some 409 and a microfiber towel and it is perfectly clean.