There's so much erroneous information in this post I don't know where to start. First, Fleetwood introduced the ABS Strata roof with some 1996 models and when first introduced none had an interior ceiling brace. However, it wasn't long before it became evident that lateral sag was a very real problem so as a "fix" Fleetwood quickly came up with the steel ceiling brace, installing it on all new models produced thenceforth and offering it to existing owners at no charge under terms of the lifetime warranty. Secondly, to say the ABS Strata roof wasn't known to leak is ridiculous. FFT themselves acknowledged a failure rate of 15% but many of us who owned one of these trailers felt that actual failures were far greater, more like 50% to 75%. Yes, one could arguably claim that over it's 8 yr life roof reliability did improve but the fact is Fleetwood finally acknowledged defeat and discontinued this roof entirely by introducing the AlumiTite (a.k.a. AlumiLeak) roof with the 2003.5 model year. Third, the ABS Strata roof could suffer many various failures - lateral sag which in turn meant the ends of the roof would not properly seal against the body rail at the front & rear of the trailer, thereby allowing rain water into the trailer, especially when being towed in rainy conditions. Despite changing the perimeter roof seal from a 3 finger to a bulb design it wasn't uncommon at all for this seal to separate from the roof, either partially or completely. The roof was also well known for blistering, bubbling, cracking, and delamination of the outer skin. Fourth, the inner core of this roof is not fiberglass but rather is a solid foam core that varies in thickness according to the curvature of the roof. Any water that gets inside that roof will destroy that foam core. Fifth, since the roof outer and inner shell is ABS it can't repaired with any product designed for fiberglass repair. Some owners who suffered outer shell failure tried making an ABS slurry by mixing methyl ethel keytone with white ABS plastic Lego blocks, 'though with mixed results. This is just a brief synopsis of the real story behind Fleetwood's ill fated ABS Strata roof - given sufficient time & energy one could write a book!