01-28-2017, 10:52 AM
Join Date: Jan 2014
Location: SouthEast of Denver
No matter which product you choose, the success of your project depends on the prep.
Weather painting or bedlining, it's of ultimate importance to properly clean and sand the surface that your material is being applied to.
Most peeling starts around the edges of whatever was masked during the initial prepping.
Two reasons for this:
1)- Crud and contamination gets under the edges of moldings and even if the prepper sands properly up against the moldings, the solvent in the paint draws the contamination out from under the molding and prevents a good bond to the sanded surface. The cure for this is to remove the moldings or trim, but this isn't practical in the case of the hardtop glass moldings. The best practice is to clean around and as much as possible under the edges of the molding, first with detergent and water, and then with a solvent once the water has dried. A scrub brush with the detergent and water does the best job to get under the edges of the vinyl molding.
There is a special tape that's available at automotive paint suppliers that is designed to lift the edge of rubber and vinyl moldings to prevent peeling around the edges, but I don't think it will work on the hardtop glass moldings because they are so old and the vinyl has "set" or dried out.
2)- It takes some effort to sand properly up against the edges (for instance, the vinyl molding around the glass on a hardtop). Any unsanded area is a peel just waiting to happen. If a person takes their time and pays close attention, even a beginner can do a proper job of prepping a surface to paint.
Follow the instructions on the can of whatever product you use and take your time. The more you rush the job, the more likely you will end up with problems.
Good Luck, L.M.
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