A customer of mine has 4x8 sheets of 1/8" industrial plastic, usually used for chutes to remove old roofing material when re-roofing. This is heavy duty material and it's free. What are your thoughts on using it for underskinning?
I would be inclined to use strips of aluminum bar (3/16 x 1) or some such lengthwise of the toon under the plastic sheet.
Run your screws through that and the plastic into the crossmembers.
I would be inclined to use strips of aluminum bar (3/16 x 1) or some such lengthwise of the toon under the plastic sheet.
Run your screws through that and the plastic into the crossmembers.