You did a fine job, but I'm not sure sun damage is a big enough concern to justify the time, effort, and expense. I replaced the then 16 year old awning fabric on our previous coach due to stains and a couple of tears from falling branches. The fabric itself was still in good shape otherwise. The cost was about $200 at the time. The now 15 year old fabric on our current coach is also in good shape other than a couple of minor stains that seem to be bleach/cleaner resistant. I will be replacing our slide topper fabric this year though, due to stretching and sagging.