i plan on doing my whole outside of my jeep but i want to roll on the bed liner ive done this before but it didnt turn out so well.i need to know what i have to do for it to stay on good what kind of sand papper and should i use primer?any help would be great. :yugosmili

I would wet sand, and use primer, my advise would be to check the manufactures website for common q & a. that should help you

Let use know how it works, I was thinking about doing the lower 1/3 of my Jeep

Not to be one to discourage, but...
This rarely comes out looking like anything other that sh_t. Many have gone this route, and the roll-on technique usually doesnt smooth out too evenly over surfaces that large. If youre set on it, I'd suggest ponying up the extra cash to have it sprayed. Thats just one man's opinion, though.