Scubadude's Summer 2010 Wood Cutter's Shack Challenge

[doctorwayne]

While the weathered wood looks great, I'm not too nuts about the tarpaper and feel it detracts from your otherwise well-done work. As installed, the first decent breeze would strip that roof almost bare, revealing only the framing and no actual roof deck. Tarpaper comes on a roll, and is usually (but not always) installed horizontally across the roof, starting at the bottom. Each subsequent run overlaps the previous one by up to one third. Often, tar would be applied along the seams. Where the roll ran out, the end of the new one would overlap the previous end, too. If it's actual tarpaper, wood battens were often nailed atop it to provide better holding ability. If, on the other hand, it's meant to represent roll roofing, (basically asphalt shingles in roll form), no battens would be used.
In either case, though, I'd suggest adding a roof deck. If you're going to model the tarpaper intact, sheetwood will do the trick. If you want to model the tarpaper ripped and patched, with the roof deck showing through in places, stripwood is the route to follow.

Wayne