a friend has offered to spray my Trilly 13ft. does anyone now the amount of paint i need. Do i need to use a primer before it gets sprayed. I plan to use a similar green paint as close a match as i can. thanks for sharing your wisdoms!

Hy
You need a average of 3 quart of paint for your Trillium
Use a good quality paint Urethane paint it"s the best and you need primer before it's important
And i recommand you tint your primer same color as the paint !!!

If you make a chip on your paint ( gravel impact ) you don't see them
And if it is not a obligation don't paint it, give a compoud and buff it and after wax it !!!

Yvon Chayer

I fully agree with Yvon Chayer.
If you can buff the original gelcoat you are better off. The longer you can keep the original finish the easier your maintenance will be.
I have painted our 13 ft Boler with Brightsides and have a bit left after two coats from four litres. I painted the trailer besause of some roof damage that we found after removing the old paint, applied by a previous owner. I know that when you paint eventually you will have to do it again, no matter how good your paint job.

8 litres was more than enough to paint my 13 ft Boler with a roller. I have enough left over for future touchups. I am not sure if spraying will use more or less.

There are gelcoat products available to restore the original finish

http://ca.binnacle.com/product_info.php?products_id=5238

but, if you are painting then sand. sand.sand, fill in holes, chips etc with Bondo and then sand,sand, sand! Use a good quality sandable primer and then sand, sand, sand!

Finally paint, sand lightly, and apply second coat etc.

I just painted my 13' Scamp and did it with Omni white epoxy primer and Omni base coat/clear coat (white) and used about 3 quarts of pimer and 1 gal of paint, now thats mixed,I bought a gal of primer and a gal of paint, the primer mixes 2 - 1 primer/hardner and paint is 1-1 paint & thinner , so I still have about a qt of primer and 1/2 gal of paint left over. Bill