Everyone recommends U-Pol Raptor Liner, but I can pick up a kit of Herculiner at my local auto store for cheaper then anywhere else. I have the carpet out of my JK, so it's practically ready to be installed. Also what's better spray gun or roll on? I am not removing the front seats, just the rear. So I will probably have better look with a roller?
u pol is recomended because it lays nice. herculiner has a rough sand paper texture as where the u pol raptor lays with a smooth soft texture, in pictures it might look rubbery but its hard. the best part about u pol raptor is besides the black, they make a tintable version, so it could match your jeep. o, and it does not fade.
Yeah, I did it in about 4 - 5 hours. Stripped the interior, prepped and layed the first coat.... the second coat I put on a few hours later. So a total of about 8 hours...Maybe? I also used it on my front bumper. I also found one more picture...
I used one gallon of it in the bed of my short wheel base 2000 F150. It covered it, but I would have liked it to be thicker. One gallon should be good for your JK, especially if it is a 2 door. Also, there is nothing wrong with putting a second coat on later. When I did my Ford, it took two weeks for the fumes to go away. I only did the bed of the truck and did not have a camper shell or any type of covering and it still took that long to cure. So, I'd say plan on not driving your jeep and letting it air out for at least two weeks.
I recommend getting a cheap pair of coveralls and putting them on along with some heavy duty rubber or latex gloves. If it gets on your skin and dries, it is hell to get it off. When I was pulling it off, it took skin and hair with it. Also, make sure to urinate and poop prior to starting the project, as you wouldn't want to herculiner your hootus, or anus for that matter.