Looking for a new/used pop up with a bath and am looking at Hallmark and Outfitter. I have seen that whole roofs have had to be replaced on some of them, both, it seems within 10 years or sooner. Can anyone tell me when either of these companies went to a better roof system? I just looked at an 07 Apex and it seemed to have a bubble on the bac of the roof material that scares me after hearing what it costs to replace. Any info appreciated, thanks.