Replacing thru Hull fitting

[Gradywhite3535]

so i was goIng to put my boat in the water when I realized that the thru Hull fitting that drains the water from the deck out the transom was loose. So I first was going to try and use some type of adhesive to mount it back but I decided to do it right. I want to replace it. I did notice there was water around the hole where water must’ve been getting in. What would be best practice to find out how much damage is around the hole? Would I be able to use export or marine Tex around the hole and then just replace the thru Hull. Also any good recommendations on getting the old thru Hull fitting out? Thank you any tips or articles/how to”s would be great

 

[dingbat]

I think if you look closely every thru hull on the boat is on the brink of failure.....

I’ve yet to see a plastic thru hull make it past 10 years. Once they start to dry and crack in the throat failure isn’t too far away.

My boat was 7 years old when I had replaced all 12 thru hulls on the boat.The scupper where replaced at 10 years.
Changed everything to stainless to eliminate future problems

To remove, use a pair of adjustable plumber pliers. From the outside of the boat, put the bottom jaw of the pliers inside the thru hull and grab the top, outside flange of the thru hull and give it a good downward snap. The flange will pop right off leaving the rest of the fitting hanging from the hose inside.

Clean up the hole with denatured alcohol. Fill the groove in the back of the new thru hull with 4200 and install. Rotate and snug fitting to evenly distribute the sealant, but don’t tighten until the 4200 starts to set up.

while your at it, you might want to change the hoses as well. Mine where well on their way to failure from dry rot. Remember to double clamp everything.

Failure isnt an option, you will go down from a failure at the water line.

 

[kcassells]

You'll want to investigate the water damage closely after you get it out. Ooppps.

 

[Gradywhite3535]

Thru hull leaking water damage

hi all, so when I uncovered my boat 1 week ago I saw that a thru Hull fitting was coming apart from the transom. While inspecting the the fitting I noticed around the hole was soaked and rotted.what would be needed to fix the rot and materials needed? The outside of the transom is solid to about 1/4”. So if anyone could help me out and maybe send a article or video on the process of what needs to be done would be awesome. I tried finding videos on YouTube but didn’t know the search terms besides water damage in transom and couldn’t find much info. Any help would be great, thanks.....

 

[jbcurt00]

Merged new topic into this 1, really 1 interrelated problem

 

[Gradywhite3535]

Any help on this matter would be greatly appreciated

 

[Gradywhite3535]

Can you transfer the pics that I posted?

 

[GA_Boater]

Can you transfer the pics that I posted?

The 9 pics in the first post?

 

[Sea18Horse]

I would think you'd want to take some core samples around the hole maybe 6"above and below and to either side to assess how far the damage goes. I'm guessing the experts will want to know where the through-hull is with respect to the rest of the transom. And what structure is around it on the inside to know the best course of action. If you find it does not extend past 6" You may be able to cut out the rot and patch the core somehow. And glass back over it. I would think you would want to expose more of the core so that you can treat it with a fungicide (Disodium Octoborate Tetrahydrate) to kill the rot spores which can travel a long ways in the still sound wood) and be waiting there for any oxygen to reach them and start the process all over again.

I would also be thinking about inspecting and replacing all of the rest of the through-hulls while your at it.Good luck!

Cheers........................Todd