Redoing peeling Red Max Pro on 2001 National DP

Did you do the roof with Red Max as well (3 years ago?)

any pictures of the peeling Red Max Pro ?

You called Red Max a wax. It is not, but you probably knew that since you put it on yourself.

Actually, wax is the enemy of Red Max Pro (or Zep for that matter). You must remove all the wax from your RV. TSP with a scrub brush is the best. I have heard Dawn works as well, No experience there.

My application is 3 years old also. In that time, I've scrubbed and just re-applied the top of the front cap twice. I have a bra on the rest of the front. I'm sure its because of my agressive attack on bugs. :)
My front door flaked badly after only a year or so. I believed it was because of poor preparation on it on my part. For that I stripped it with the Red Max Stripper. Pretty simple job, messy but simple. Re-applied the door and it is now holding up as well as the rest of the MH. BTW: We fulltime and its exposed to elements all the time....except snow :)
I'd suggest washing an area with dawn and re-apply several coats and see what the results are. If not acceptable, you know you have to strip.

My last motorhome, {Flair 25Y} I applied the Red Max Pro and had peeling on the stripes, had to remove red pro wax and redo twice in 18 months in those areas, it will peel in certain areas, however the RV always looked new with the wax but it does have issues, I have a full body paint now on new motorhome but hope the clear coat holds up..

My Zep job is now 3 years old, no problems yet (touch wood). It sure looks great after 3 years!
If I were having peeling issues, I think I would likely strip it and redo.

I'm getting a couple of spots on my front cap, so plan to do a good wash, make sure any loose spots are removed, and do a couple new coats.

Adding to my post above, removing old red pro wax with red pro removal and appalling new wax was not hard and always came out looking good, even though I had some issues, my old motorhome always looked new and had good comments at campgrounds..

I was so pleased with how the rig came out I tried it on one of the cars - and like it so much I did the other car. .

I get a bit of flacking on the front and rear caps over winter which I correct with a spring wash and wax. I use Bar Keepers Friend and a green scrubber to remove the loose coating and feather the edges. Follow with a good wash with mild soap and water to remove any dirt, bugs and such. Two or three coats of RMP and the caps look good as new.

I have not had problems with the side walls or graphics just the caps after the winter cold temps. I think the flaking might be due to possible swell and shrink of the fiberglass caps. My black decals have already shrunk 1/8 inch or so but look ok at 30 feet going 30 MPH (my 30/30 rule). Coach is out in the South Eastern Virginia weather 24/7/365.

Also found the a strong solution of LA Awesome (3 to 1 ratio water to cleaner) mixed in a pump garden sprayer will strip RMP pretty effectively. Spray in on wait a few minutes then a light scrup with a green pad and the coach is back to dull tied look. Works best not in direct sun so the solution doesn't dry out.