Above water thru-hull fitting

gvb · Posted: Feb 23, 2006 2:33 pm Post subject: Above water thru-hull fitting

Stupid question, I just don't know the answer Wink

I am adding thru hull fittings above the water line for ballast overflow/venting. Do people typically seal these fittings with the same stuff as the below water-line fittings (3M 5200)? Do I just use a standard Caulk? Or nothing at all?

-gvb

Geoff Standish · Addict Joined: 13 Jan 2003 Posts: 843 City: Calgary

gvb, I'm not sure of the way it is suppose to be done but I put a standard silicone caulking on mine. Basically just to combat any splashes/rain etc. I don't imagine there is any need to use the marine cement IMO.

Sbt3 · Soul Rider Joined: 27 Jan 2003 Posts: 279 City: Okauchee

I used standard silicone on all my above the water line fittings and haven't had any problems.

gvb · Posted: Feb 23, 2006 9:59 pm Post subject:

Thanks guys... that's what I figured. Just being paranoid as always.

chopper515 · Criminal Joined: 08 Jun 2004 Posts: 68 City: St. Louis

I didn't use anything. Since it is a vent/overflow it is installed as high as possible anyway. No problems

MX21 · Outlaw Joined: 11 Dec 2003 Posts: 143 City: Austin

Silicone is what was on there from factory. I used it mainly to seal the edges of the hole.