Finished my first MYOG shelter. Had it out for three nights last week, with showers and pretty stiff winds on one night, in an exposed location:
Noticed no leaking at all, even though I hadn't seam-sealed the shelter. Today, I set it up in my backyard and sprayed well with a hose for several minutes--again, no leaks. FWIW, ridgeline seam is flat-felled, and tieouts and peak are reinforced with another layer of sil, straight-stitched.
So is seam-sealing necessary? Will I develop leaks over time, or in constant drizzle/downpour? Planning to head for Mt Rainier area next week--would prefer not to seam seal and thus save weight, but would also prefer a dry place to sleep.