by noseoil » Sun May 17, 2015 7:46 am
Michael, that is just plain weird. I've never seen anything like it & can't wrap my head around what could have caused it to happen. It just doesn't make sense to me to see how it puckered like that. Sorry you ran into it, but I think the contact cement will work out OK for the bond. Looks like you're going to need a pretty large slip sheet for the drop to center it properly. Not sure I'd be looking forward to gluing a sheet that size in place.
Do you have a plan for dropping it & some kind of sticks or a barrier sheet to make sure alignment is correct before it's spotted & down? Working from the center to the outside, to keep the air bubbles out? Is the red glue a solvent base or water base? Sprayer or roller for application? I guess two or three 16'-2x4's on the roof (length-wise) would keep it supported until it can be spotted and allowed to make the initial contact for the bond. Or maybe some long lengths of clean full-round molding (1 3/8" closet rod) would help support it until you can get it placed exactly where it needs to go. They would roll around a bit prior to the spotting.
At least you found out about it before driving down the road, having it finished, painted & trimmed out, and then jumping out of the truck at a camp site for the night. Still can't figure this one out. Chin up bud, better days are just around the corner!