Guide to Repairing Bubbling Gel Coat on Fiberglass Campers

By NagelTrailerRepair, 19 March, 2026
How to Repair Bubbling Gel Coat on Your Fiberglass Camper

Gel coat bubbling on a fiberglass camper is something many owners face, especially after years of exposure to moisture and sunlight. What starts as a few small blisters can quickly grow into a bigger problem if you don’t address it in time. In this guide, we have discussed how you can tackle this issue step by step and bring your camper back to life.

The first step is understanding the extent of the damage. Carefully inspect the surface and mark all the affected areas. Once you know where to work, remove the damaged gel coat completely. This ensures that no weakened material remains underneath. Sanding and grinding may take time, but they create a strong foundation for the repair.

Next comes surface preparation. Cleaning and drying the area properly helps the new gel coat adhere effectively. Applying the repair compound requires patience and precision. You want a smooth, even layer that blends with the surrounding surface.

After curing, sanding and polishing restore the shine and give your camper a like-new appearance. If the repair feels too complex or time-consuming, relying on trusted camper repair Michigan professionals can save you effort while delivering high-quality results.