What kind of filler would you use after installing fiberglass side skirts to the body car?

After installing fiberglass side skirts to a car body, you would use a flexible filler to fill any gaps or imperfections between the skirts and the body. These fillers are specifically formulated to adhere to both fiberglass and metal surfaces and can withstand the flexing and movement that occurs during driving. Some commonly used flexible fillers for this application include:

1. Polyester Putty: Polyester putty is a two-part filler made from a resin and a hardener. It is known for its strength and durability, and it is commonly used for filling larger gaps or imperfections.

2. Urethane Putty: Urethane putty is also a two-part filler that provides excellent adhesion and flexibility. It is often preferred for smaller gaps or areas that require a more flexible filler.

3. Epoxy Putty: Epoxy putty is a two-part filler made from an epoxy resin and a hardener. It offers strong adhesion, flexibility, and resistance to water and chemicals. Epoxy putty is suitable for filling both small and large gaps.

4. Fiberglass Filler: Fiberglass filler is specifically designed for fiberglass repairs and can be used to fill gaps or small holes in fiberglass side skirts. It consists of a mixture of resin, fiberglass strands, and a hardener.

When applying any of these fillers, it is important to follow the manufacturer's instructions for mixing and application. Proper surface preparation, including sanding and cleaning, is also crucial to ensure a strong and lasting bond.