by grant whipp » Mon Feb 18, 2013 12:06 pm
Greetings, Dirk!
I've never used (or even seen) a billboard tarp, so I can't comment on its durability. But I can comment on the masonite and whether to use anything up there or not. Using masonite is all right, as long as it is the tempered type with the water-proof glue ... stay completely away from the typical light-colored interior masonite.
Re: sheathing over the roof spars ... it's only slightly heavier if you use, say, 1/8" luan, but the the added torsional stability of the box is greatly magnified if you do ... not to mention the extra protection it provides against possible damage from falling or otherwise airborne objects.
All IMHO. Good Luck on your project, and as always ...
CHEERS!
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Teardrop Trailers!"Life Moves a Little Slower When You're On Teardrop Time"The nature of Life, itself, is change ...
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