What NOT to do with bad boat core
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- เผยแพร่เมื่อ 3 ก.พ. 2021
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For over thirty years, I have heard about pumping epoxy in to a soggy core as a solution and it NEVER WORKS. Now you can see inside a deck and see why. I have wanted to do a video on this for a long time. What NOT to do with a failed core can now be seen. It's wet in there.
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It does work with gorilla glue though, if you are able to inject it under pressure. It’s obviously just a cheap fix and not a professional repair by any means but I am telling you it does work. Water is the catalyst in the gorilla glue. I’ve drilled holes in a transom injected gorilla glue, then sealed the holes, and had the gorilla glue losing out of another hole 6 foot away from the injection point. After completion I applied a small layer of glass with epoxy and paint to finish, hit it with a hammer and it was solid as a rock all throughout. Had a buddy come over who is a marine surveyor and he said nobody would ever know and that it’d pass any survey hands-down. Never in a million years would I do that to a high value boat, especially if I was planning on selling it, but it is a viable low cost option to someone in a pinch like I was.
Amazing. This guy rules. And great advice!
Thank you for sharing this important information!
This guy is great I know what he’s dealing with here
Funny and informative! Thank you!
Oh thank god someone told me to do this, thanks for saving the day!
You are a true master. Thank you for putting the work and effort to help us.
Reza
My pleasure.
A pleasure to be able to help out. Have fun with your boat!!!
@@sailboatcareandrepair Hello! I don't want really to watch vids about repairs but you have excellent ability to calm the nerve about them :). Where is part 3? You are great! Can I use your commercial account for epoxy? lol just messing around.
been looking for an answer to that question glad to get an answer ill just do it correctly
Funny guy ...great advices .
Well said
Being a boat repairer myself, I absolutely totally agree. DON'T drill holes in your deck and inject epoxy!!!! IT DOESN'T WORK!
Hey, one question please. I've bought an old 14' sailboat with fiberglass over thin (~4mm) plywood construction. At several places (mostly by daggerboards and gunwales) the ply is very soft. Few scrapes expose the fiberglass layer which however holds its own. My plan was to scrape the soft ply, stabilize the rot, and put epoxy & fiberglass from the inside to strengthen the hull. Is it not a good idea, what other options are there? I can replace the transom from the inside but I cannot imagine doing that for all the ply due to the complicated shape. I understand that the wood is important as it adds rigidity. Is there some synthetic substitute i.e. filler or a foam that could go in place of scraped out ply? You reckon I keep as much original ply as possible or scrape it all? Any advice much appreciated :)
@@matejv2840 If you are asking me.... I don't see a problem with that seeing as the plywood is so thin. Make sure you get rid of ALL the rot and then do layers of glass in those spots.
Sorry but it worked for me. That was 40 years and 28000 miles ago and the boat decks are still firm.
Ideally replacing a wet, mushy failed core is the way to go. It’s all a matter of degree. Can you get a satisfactory repair from drilling holes and drying? Without a doubt you can!! I’ve done it and am happy with the results years later.
So drilling a thousand holes fixes a rotten core coolio 👍😂
Show us how to recore, i need to recore and would love to see how to do so properly.
see my u tube page
Thanks for the advise. I was looking at a cheap Morgan 31that has been unused for more than 4 years, while chatting to the seller he mentioned she was cored, he then went on to explain, how they do exactly what you have shown, he tells, they suck the rotten core out then pump epoxy into the void to fix the boat. To my mind it didn't sound right at all, end of call
I did this type of repair but in my defense i was hauled out and placed a fan directly on the drilled holes for about a month and a half, then i was able to get an acceptable reading on a Moisture Meter and then filled with Epoxy. I very well might have to cut back into her in a few years but as of now it does seem solid and i feel pretty confident about it so far.
Ten years ago I bought a Spencer 42 .. didn't know much about boats then. Got really lucky; my boat is solid fiberglass from the keel to the deck :-) ... and thick structural fiberglass, not this chopped mat crap. Where the deck and cabin go over the mast step it's 1/2" thick so I added another 1/2" above my supporting bulkheads just to make sure :-)
Solid glass, is solid glass. Heavy, but no moisture in there. Enjoy your boat and I look forward to meeting you somewhere out there.
@@sailboatcareandrepair hey! Please FILM MORE VIDEOS! Your Awsome🙂
what about polyester resin that is porous and could absorb water, what is your experience with that?
@@Bakanelli properly mixed and applied resin is not really porous. Water can permeate anything but not fast enough to rot a balsa core. But a thousand holes - that will let enough in to rot a core.
@@sailboatcareandrepair Thanks for the reply! reason being I’m asking is because I am worried about fibreglass osmosis since I certainly won’t be able to get ALL of the rotten core out (specifically on curvy difficult to repair parts and time limitation). So you think there’s a correlation between low quality, wrongly mixed polyester resin and fibreglass osmosis?
Does anyone have experience with the drilling holes technique with dry delaminated foam core?
The drill and fill method does make it hell when its time to correctly repair.
Nice video. I hope that any boat magazine or boatbuilder didnt give that awesome tip to anybody.
Hey thanks for this video of explaining what not to do.. intelligence is easy to come by.. wisdom on the their hand is not.. appreciate you.
So if I have a failing deck can I drill a 1000 holes in it and fill it with epoxy? I think I read that I could in a Better Homes and Gardens magazine.
As long as you are only baking bread, you will be fine. But for the deck of your boat the best time for a thousand holes and epoxy is . . . . . . Never!
Thanks for the chuckle.
I have friend who did the drill and fill job. Deck is solid six years later. He said the most important part is getting the rotted core completely dry. This takes a covered deck, ( clear plastic), mechanical ventilation ( fans), and about two months drying time. Indoors is best with humidity control.
You can get lucky, but I have never seen it. 100% of the drill and squirts that I have checked had massive amounts of water inside when checked later.
I am happy to hear that your friend was able to buck the trend. Let me know how it comes out after the first big storm at sea that flexes things around for a day or two.
I only drilled 500 it's all good 😊 Lol
Polyester Resin that most Manufactured Boats are made from, is guaranteed to absorb water.
Folks do the "1000 damn holes" repair technique in the beach cat world regularly to deal with delamination. The result is the same as you're showing, basically BS with no improvement in structural integrity. Weird though how everyone that does it "feels" better after the "repair." 😱🤯😳
Lol, you sound like me telling people not to drill holes an d fill with epoxy. All you have is little pillars of epoxy in a rotten mush core. I am an aircraft mechanic and I think I know where this practice came from. There is a repair in aviation of reattaching a debonded core using this method. Not a rotten core or wet core. Possibly this practice crossed over to boats from people not understanding what they were seeing done on the aircraft.
You will feel beter after you remove and replace the wood
In 5 minutes you have imparted that one shouldn't try injecting epoxy into the compromised balsa core.
How about a holesaw...bigger holes? You seem to like the one big whole repair.
As long as the hole is big enough to get the old core and water out and new core in, you are golden.
Nedo
Thank now im going to drill a 1000 holes an inject epoxy….
Haha 😂
Nah I’m going to make a new core,
How should I go about the moisture in the remaining wood?
Is it okay to replace the rotten parts ? And seal it?
Totally disagree. I drilled holes in my flexy fibreglass decks 40 years ago and it worked. 28000 miles later, the boat decks are still solid. The Treadmaster stuck on to cover the holes is also going strong.
You were lucky. 99% of the time it just makes a spongy mess. Keep having fun with your boat.
but how dose some one poor like me fix the problem on the only thing he has to travel or as a home
wait for a stretch of good dry weather. find the bad spots by tapping on the deck lightly with a small hammer. your looking for areas that change in tone to a dull thud. mark the deck where the dull thuds are. these are the rotted /water soaked core areas. cut the deck where you marked without going too deep into the neck fiberglass layer/level. carefully with anything you can cut, scrape or push under the deck as you have to lift it off the bad core. remove the bad core. generously epoxy in a new core. epoxy the deck back into place. epoxy fairing the deck cuts, sand smooth...repaint the deck. make sure every fitting on the deck that has screws or bolts into the deck have been rebed properly or youll have more wet spots showing up.
Who hurt you?
People who drilled 1000 holes in thr core and filled it with epoxy that's who
You were not very clear on whether or not to drill a thousand damned holes in the deck.