What should you never rinse your gel coat down with?

Using soapy water to rinse gel coat is not advisable because many soaps contain chemicals that can damage the gel coat or leave behind residues that affect its shine. This is particularly important for maintaining the aesthetic and protective qualities of the gel coat, which serves as a barrier against the elements and contributes to the overall appearance of the vessel.

Water alone is generally safe for rinsing gel coat, as it effectively removes dirt and debris without introducing harmful chemicals. High-pressure air can be used for drying or blowing off excess water but does not involve rinsing; however, it must be used carefully to avoid damaging surfaces. Isopropyl alcohol is often used for cleaning, particularly for removing stubborn residues, but it should not be used to rinse as it can be overly harsh on the gel coat and might strip away important protective layers.

Therefore, while soap may seem convenient for cleaning, it can lead to potential deterioration of the gel coat's integrity over time.