Just finished this last week. On my 34 Bounder I bought the 5 gallon pail and think I put it on pretty thick. I had a gallon left over. I used the primer since I have the Alpha roof. Painting the rounded edges, the liquid roof does want to run if you put it on heavy enough. It takes some practice to get the right amount and after I applied it, used the brush to spread from the drip rail toward the top to keep from applying too much minimize the runs. I used the blue tape and took it off as soon as I was done. I used the gallon EPDM Coating primer kit and it was almost twice what I needed. The biggest issues with runs was with the primer. The primer is easy to apply and about the same as any paint you might have used as far as application. Be aware the for me, doing it myself, after I cut in around the edges and all of the vents, etc. on the roof, two hours had passed and in the 90 degree Florida sun, the primer started to set up in the bucket. I would recommend only mixing half at a time for both the primer and the coating unless you have extra help. It took about 4 hours to complete the primer and 6 hours for the coating for me to do. Moving the ladder around the coach to do the rounded sides just seemed to take a long time. It did turn out great and the roof looks really good now. It has been a week and the coating seems to have set, although I can't be sure it has totally cured. Good luck. 25 to 30 gallons for a 34 foot roof is way, way, way, way overkill and too much. EPDM recommends 5 mil thickness. Chuck