Restoring The Painted Belt Line Trim
Posted in Restoration & Help on February 25th, 2010 by StewartThe belt line trim on the 1992-1996 Buick Roadmaster Sedans is comprised of three different parts:
1) The Polished Stainless Steel Trim Base (1992-1994 Sedans) or Chrome Plated Plastic Trim Base (1995-1996 Sedans).
This is the wide chrome trim that completely encircles the car.
2) The silver painted plastic trim.
This is attached to the Stainless or Chrome Trim Base mentioned above.
3) The flexible plastic “chrome” trim on the top of the bumpers.
This is a thin chromed plastic strip on the top of both bumpers.
As my car is a 1994, I’ve got the polished stainless steel trim.
I just spent several days hand polishing this stainless steel, and it is in perfect shape.
The flexible plastic chromed trim on the top of the front and rear bumpers usually turns yellow and fades with age.
I’ve got a fix for this documented on my Restoration & Help page.
This post covers how I am going to restore the plastic painted portion of the belt line trim on my car.
I should mention that I have also covered how to properly reattach this silver painted plastic trim, as it has a tendency to loosen up and eventually fall off if not corrected.
See my Restoration & Help page for this information.
The painted plastic belt line trim on these cars can be problematic.
With age, it fades.
If the car is not garaged and is exposed to the elements all the time, this plastic trim can break down and erode.
This painted trim is also prone to scrapes and stains.
The silver painted trim on my car is in excellent shape for it’s age.
However, it does have some stains, it’s faded, and there are a couple of small areas where the rubber trim has just started to erode.
On the two pics above, you can see the edge of the plastic painted trim where I touched it up with silver paint. The plastic started to erode there, and I stopped it, but it still needs proper attention.
I am doing the trim restoration myself.
Here is what I am going to use to re-paint the plastic portion of the trim:
When painting plastics, you need a special paint. Specifically it needs to have a flex-agent in it so the paint doesn’t flake off if and when the plastic is flexed or bent. Also, paint for plastics usually has adhesion promoters specifically formulated for plastics.
Here is what Dupli-Color says about their product:
“Dupli-Color® Flexible Bumper Coating renews and protects weathered or discolored bumpers, moldings and rub strips. This tough protective coating offers superior adhesion to thermoplastic rubber and polyurethane bumpers.”
Available Colors:
FB 105 Black
FB 106 Gray
FB 107 Tan
FB 108 Medium Silver
FB 109 Dark Charcoal
I am going to use either the Medium Silver or Dark Charcoal.
Not sure yet which one.
The belt line trim was originally much darker than it is now.
When I removed the front bumper over-riders, I saw how dark the original color was. I just don’t know if I want to paint it the color it has now become, or take it back to the darker original color.
To repair the erosion at the ends of the trim near the rear license plate, I’ll be using this:
Basically, this is flexible urethane glue.
I’ll fill and finish the eroded spots with this, and then paint the trim with the Dupli-Color Bumper Coating.
The RoadMonster is having a lot of work done right now.
I am currently collecting all the parts and supplies I need for several different projects on the car.
I’ve got to get this trim all restored and repainted by May.
Stay tuned for pics of the whole process…










































