How to Fiberglass a Car Body

Materials You’ll Need

• Fiberglass cloth
• Fiberglass resin
• Hardener
• Acetone
• Mixing cups
• Stir sticks
• Foam brushes
• Sandpaper
• Body filler
• Primer
• Paint

Safety Precautions

• Wear a respirator when working with fiberglass.
• Wear gloves when handling fiberglass resin.
• Work in a well-ventilated area.
• Avoid contact with skin and eyes.
• If you get fiberglass resin on your skin, wash it off immediately with soap and water.

Step-by-Step Instructions

1. Prepare the Car Body

1. Remove all loose paint, rust, and debris from the car body.
2. Sand the surface of the car body to rough it up.
3. Clean the surface of the car body with acetone.

2. Apply the Fiberglass Cloth

1. Cut the fiberglass cloth into strips.
2. Dip the fiberglass cloth into the fiberglass resin.
3. Apply the fiberglass cloth to the car body.
4. Smooth out the fiberglass cloth with a foam brush.

3. Apply the Hardener

1. Add hardener to the fiberglass resin according to the manufacturer’s instructions.
2. Mix the fiberglass resin and hardener thoroughly.
3. Apply the fiberglass resin and hardener mixture to the fiberglass cloth.
4. Smooth out the fiberglass resin and hardener mixture with a foam brush.

4. Allow the Fiberglass to Cure

1. Allow the fiberglass to cure for the amount of time specified by the manufacturer.
2. Once the fiberglass has cured, sand it smooth.

5. Apply Body Filler

1. Apply body filler to the fiberglass to fill in any gaps or imperfections.
2. Sand the body filler smooth.

6. Prime the Car Body

1. Apply primer to the car body.
2. Allow the primer to dry.

7. Paint the Car Body

1. Apply paint to the car body.
2. Allow the paint to dry.

Tips

• Use a high-quality fiberglass resin and hardener.
• Apply the fiberglass cloth in multiple layers.
• Allow the fiberglass to cure completely before sanding it.
• Use a fine-grit sandpaper to sand the fiberglass.
• Apply multiple coats of primer and paint.