Oh boy. We're in a mess. Roof rebuild FAIL.

My parents gave us their pop up. The roof was completely rotted inside due to a leak. DH claimed he could rebuild it. He was able to get all of the rotted wood and foam out. What looked like success has suddenly turned into failure. He used Contact Cement to glue the 1/8 inch luan to the roof. Then he put the layer of foam and then another layer of luan. We let it cure for a week and then sealed/painted the luan. Well, after turning the top right side up, it appears that there are areas where the glue isn't holding.
:S

His plan was to apply the bedliner to the top today, but being as it appears the glue isn't holding in spots, I told him NO WAY was I sleeping under that! Now he doesn't know if he should just take it all apart again and start over or just put screws in to hold it all together, seal all around the screws and then apply the bed liner.

The camper is OLD, needs work and was given to us for free. We really don't want to invest a lot of money into it because we plan on getting something else eventually. So far, he has put almost $300 into repairing it. We just want to be able to use it a couple times a year for maybe the next 2 years.

WWYD? Scrap it, start over (take it out and reglue it), or leave it as is and secure it with screws?

Oh, and last night, he cut out the square where the air conditioner will go, and the release of glue fumes was unbelievable. We smelled no fumes before he did that. Right now, he's got it sitting out in the full sun/90 degree temps to see if that will help release some of the gasses.

*He said I left out a lot....He Glued the luan to the shell, put 1 by 1/2 inch frames around. Put tresses, framed hole for air conditioner, put styrofoam in, laid another layer of luan, nailed it to frame and tresses.