Decal Removal...

I used acetone on my cougar to get off old wax. Worked great. Just don't leave it on the paint. It will melt plastic.

I had a similar problem removing old vinyl graphics from a 20 year old fiberglass boat, the best thing I found was Klean Strip adhesive remover, it is aggressive though will eat through thin rubber gloves in seconds, but nearly melts away old brittle vinyl graphics and most of the residue. (think hot knife through butter) It did not seem to harm the fiberglass clearcoat on my boat, but there was some visible shadow fading from where the graphics was located.

3M Adhesive Remover works very well. I bought a quart can with a cap with a squirt tip. After getting the decals off, I used an old towel. I held the towel below a section of the adhesive and slowly moved the tip of the can across and above the adhesive letting the liquid "sheet" down over that section of adhesive, soaking into the towel below. Then using that saturated towel, I could easily wipe off that section of adhesive. Basically just melts away. Keeping the towel moist with remover is essential to make it easier.

Have heard that mineral spirits works well also. That may be what the 3M is composed of. Probably cheaper.

I used acetone; no damage to my motorhome. If you have some on hand, give it a try. You can always move up to a specialty adhesive remover if needed.

WD40 or goo gone product may work. Have used both to remove adhesive left by price tags and stickers.

I used this to remove the decals off our Cougar!

https://www.amazon.com/3M-Stripe-Wheel-Mandrel-Diameter/dp/B00063VT0G

Goo Gone

Acetone is fine on gelcoat, not on plastics. Laqueor thinners removes all kinds of sticky things.

I've rehabbed over 100 trailers. The best way is to use carb cleaner, spray it on the area and IMMEDIATELY use a wallpaper scraper (the kind with a handle and 4" blade) to skim the area lightly at a 45 degree angle, it comes off like wet goop with no effort at all. Don't try to push hard on the blade or you'll gouge the fiberglass. You can follow with a quick wipe with a paper towel and some more carb cleaner to remove any remaining residue.

Professional automotive paint & body repair friends of mine recommended 3M adhesive remover years ago to me. I've used it to remove RV decals, moldings, stickers and a host of other unwanted adhesives. It's great for industrial uses, and doesn't harm painted surfaces.


3M Adhesive Remover Clicky

Good Luck!