Is Primer Needed?

sterling L.P. topcoats and primers
Chessie
Frequent Poster
Frequent Poster
Posts: 128
Joined: Mon Nov 06, 2006 8:54 am
Location: Glen Burnie MD

Is Primer Needed?

Post by Chessie »

I have done 3/4 of my Boston Whaler project boat using the System 3 Primer and the sterling top coat.

GREAT FINISH so far.

Now for the hull and I'm running low on primer.

The existing hull is a 1970 Boston Whaler which has oxidized gel coat on it that structurally is in very good condition, however the hull has weed growth on it that has stained the hull to the point that I almost need to sand the stains off. Problem is the sanding will not leave the hull in a condition that can be compounded out.

Can the Sterling be applied directly to a good condition hull provided it has been sanded with the recommended 220-320 grit sandpaper WITHOUT using primer.

Chris in MD
Chris in Maryland

Chessie
Frequent Poster
Frequent Poster
Posts: 128
Joined: Mon Nov 06, 2006 8:54 am
Location: Glen Burnie MD

Post by Chessie »

Anybody?????
Chris in Maryland

User avatar
tech_support
Very Active Poster
Very Active Poster
Posts: 12318
Joined: Wed Dec 31, 1969 7:00 pm
Location: Vero Beach, FL
Contact:

Post by tech_support »

The gel coat is porous so the paint will not be as smooth

I doubt the bond will be as good either.

Why not try a small area, let is cure for few days and see how it performs.

Chessie
Frequent Poster
Frequent Poster
Posts: 128
Joined: Mon Nov 06, 2006 8:54 am
Location: Glen Burnie MD

Post by Chessie »

There are some areas when I painted the sides where I did go a little over in some places where there was no primer, only sanded gel coat and they seem to be fine. That Sterling seems to bond to anything realtively clean.


I just wanted to be cautious about doing the whole hull due to the abuse the hull takes versus the sides.

If you think it is OK, then I'll skip the primer, if it's questionable then I'll prime it to be sure.

Thanks

Chris
Chris in Maryland

User avatar
tech_support
Very Active Poster
Very Active Poster
Posts: 12318
Joined: Wed Dec 31, 1969 7:00 pm
Location: Vero Beach, FL
Contact:

Post by tech_support »

I would not paint my hull without primer. I thought we were talking about the bottom or small area where you sanded through the primer.

Chessie
Frequent Poster
Frequent Poster
Posts: 128
Joined: Mon Nov 06, 2006 8:54 am
Location: Glen Burnie MD

Post by Chessie »

No it's the whole thing.

I'll primer it and buy more if I need it. I'm going to be right on the brink of having enough.

Thanks for the help as usual.

Chris
Chris in Maryland

Post Reply

Who is online

Users browsing this forum: No registered users and 6 guests