Dear Dave,
When I started washing my windshield, I noticed the gasket had separated from the windshield in some places. We are level in our site, fridge works great and the rig is level. There is no damage to the windshield gasket. It’s just separating, leaving gaps between the glass and gasket. The adjuster from Progressive is coming to check it out. What would cause this? What is the remedy? —David, 2000 Bounder 39Z

Dear David,
Your Fleetwood Bounder has a one-piece fiberglass front cap with the cutout for the windshield. The windshield is held in place with the rubber molding called a zip-strip and creates a floating windshield. Some models have a metal perimeter framework like a car or truck, and the windshield is adhered to that with black automotive sealant.
“Floating” windshield
Engineers of each method have their arguments as to which is the best. The floating engineers claim the windshield takes less road abuse by being able to float and the molding absorbs the shock.
However, I have witnessed dozens of units with this design in service centers that have an issue similar to yours. Typically the gap is at the top of the windshield as it settles in the opening, especially if it was cut a little too large.
If the settling is minor, they can replace the perimeter gasket and use additional sealant. However, most have to have additional fiberglass added to the opening to build it up and make the tolerances tighter, and then reinstall the windshield. Not an easy task.
Windshield shifted?
In your case, it looks like the windshield “shifted” and pulled from the center molding, creating the gap. This most likely was caused by a twisting effect of the front cap, maybe from road vibration, or possibly not always being level at campgrounds.
It is hard to tell from the photo, but it looks as though the gap is wide open to the inside of the front of the RV. This would require removal of the entire windshield and inspecting the fiberglass cap to make sure it is square and within tolerance.
The challenge you will have is this unit is 27 years old. With new owners at today’s Fleetwood, it might be hard to find someone who can verify this. I would recommend finding a current Fleetwood dealer that has been around for at least 30 years. Their service department should be familiar with this issue.
I doubt your insurance adjuster will know what is going on and how to fix it, but it is worth a try. I’m not sure what part of the country you are in. However, i might be able to point you to a dealer that is qualified to take a look at this.
Several other RV manufacturers use this design as well as over-the-road trucks, so you might be able to find another avenue to have this addressed.

Possibly just needs windshield gasket caulk
If the gap does not go all the way through with an opening to the interior, you might be able to apply some additional windshield gasket caulk. I have used this on not only windshield trim, but also window rubber gaskets that have started to shrink.
At the Florida RV SuperShow in Tampa this winter, several service technicians recommended DAP Dynaflex Ultra as a good solution for this type of repair. You can find it on Amazon here.

You cannot use standard household silicone or typical home improvement sealants. Many will not properly bond to RV materials such as fiberglass, aluminum, and rubber. Dynaflex Ultra is designed for exterior use and adheres well to these surfaces.
Application steps:
- Clean the gap thoroughly with mineral spirits.
- Allow the area to dry for at least one hour.
- Apply a bead of Dynaflex Ultra into the gap.
- Feather or tool the sealant to blend with the existing rubber.
- Allow it to cure for 24 hours.
- If you use wax paper to shape or protect surrounding areas, you may need to gently run a razor blade along the back side to release the cured sealant from the paper.
You might also enjoy these posts from Dave
- Can I use silicone to seal the gap under my Class A windshield?
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- What sealants do you recommend for an RV, and what areas need to be sealed?
- Should I use Flex Seal to protect 2-year-old RV’s roof?
- Can I use something besides butyl tape for sealing an RV window?
DAVE HAS ANSWERED MORE THAN 1,000 readers’ maintenance and repair questions. Read a directory here. There is so much to learn!
Dave Solberg is a leading expert in the RV industry and the author of the “RV Handbook.”
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