Prepping New Fiberglass

• 1). Clean the surface using a mixture of 1 tbsp. dishwashing liquid to 1 gallon of water. Use a sponge to apply the cleaning solution. Use mineral spirits to remove surface stains that are not easily removed.
  
  
• 2). Rinse the fiberglass surface with clear water. Be sure to remove any remaining dishwashing liquid residue.
  
  
• 3). Allow the fiberglass to air dry completely before proceeding. If possible, move the fiberglass into a room that is temperature controlled; fiberglass paint reacts badly to extremes of temperature.
  
  

Prepping Previously Stained Fiberglass

• 1). Put on a high quality respirator, eye protection that will guard against chemical spills, and two pairs of heavy gloves. The outer pair of gloves should be made of nitrile or neoprene. The inner pair of gloves should be made of polyethylene or ethylene vinyl alcohol. Be sure to wear a long sleeve shirt and long pants while working.
  
  
• 2). Apply methylene chloride to a small area of the stained fiberglass using a rag. Wait exactly two minutes, looking at a watch to verify the elapsed time, then remove the stripper with a clean cloth. The goal is to remove only the clear top coat that will prevent the new paint from adhering. Complete this step in a well-ventilated area.
  
  
• 3). Continue applying methylene chloride until the entire area has been stripped of the clear, protective top coat.