The GelCoat on the penthouse has never looked as good as I think it should. So, I spent the day cleaning and refinishing it.
I used a product called PoliGlow:
http://www.poliglow.net/
I did some internet research, and this was the product more boat owners recommend. A couple of boating magazines tested it with good results. At $65 + shipping I sure hope so.
The idea is to clean the gelcoat with their special cleaner (smells like Simple Green) dry, and then apply 5-6 thin coats of this stuff. Then it shines like new (OK, better than new) and because the surface is so smooth, it is supposed to stay cleaner. Then twice a year you do two more coats to keep it looking great.
Well, it looks good for the first couple of hours. We will see in 6 months (Sep/Oct) how it does.
I also coated the endcaps on the awning, because they have always looked like crap. Much better now. And time will tell if it was worth the money and time.
Mike