The best thing I've used is a inexpensive power washer I bought at Sears for about $60.00, and one that sprays at around 1500 psi works great. I worked carefully around the wood, but for fiberglass non-skid it's the only way to go. After you're done, seal up the deck with Woody's Wax.
I used the search function and didn't really get very far.. So excuse the question if there is an answer already posted.
I am getting ready to purchase a 1983 Catalina 30, that has been in pretty good shape, but as the new owner I want to spruce her up, and I need to scrub the fiberglass deck to get some black/grey dirt off of it and make it look good again. It doesn't look bad, it just needs A little tlc.
Can anyone recommend a great cleAning product for fiberglass deck?
Also, I am going to Clean the teak on the deck which is limited, and in the companion way aS well as inside, anyone have any opinions on the best teak cleAning kit?