Pettit has a bottom paint calculator (here: Pettit | Quantity Calculator (pettitpaint.com)<https://www.pettitpaint.com/how-to-advice/quantity-calculator/>).
When you enter L=37 and beam=12 (I am guessing), they claim that you need 1.2 gallon. But if you use the 450 sq ft/gallon, they claim you would be fine with 0.8 gal. Defender has its own: https://www.defender.com/html/bottom_paint_calc.html Based on my own experience (I used 2 quarts on a 27 ft boat with 10 ft beam), the way they calculate is a bit tight. You might be able to make it under 1 gal for a single coat, but it will be tight. It might almost be a question how hot it is when you paint. A spare quart might be in order. Marek 1994 C270 ”Legato” Ottawa, ON From: Peter McMinn via CnC-List Sent: Thursday, August 26, 2021 6:41 PM To: cnc-list@cnc-list.com Cc: petemcm...@gmail.com Subject: Stus-List Bottom paint gallons Fist time bottom painting my 37. I bought the paint but now thinking 2 gallons isn’t enough for two coats. Pettit Trinidad (hard) label says theoretical coverage is 450 ft²/gallon. The 37 is 28’ at the waterline. 2 gallons more than enough or not enough?
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