Patching thin aluminum hull

I have an older Alumacraft 1542 riveted jon and recently removed the spray foam at the back of the boat.

The foam has apparently helped to oxidize the aluminum and there are some thin chalky areas that are now leaking.

I need to patch/reinforce these spots with something. What do you guys suggest?

Thanks

Glu-Vit or West Systems G-Flex 650, which is flexible.

See here: https://forum.tinboats.net/viewtopic.php?f=3&t=40954&hilit=flex

Or https://eclecticproducts.com/produc...oducts/amazing-goop-coat-it-epoxy-sealer.html which has Kevlar in it..... Recently did the bottom of one my boats with it.

Thanks guys,

Do you know if these products are available online only or are they stocked in a big box store somewhere?

Thanks.

here on TinBoats, we like to see photos of issues so that accurate feedback can be provided.

Rkt - I second Dale's suggestion.
to answer your basic question: sand, scratch, pull or whatever to get ALL the existing
corossion removed and neutralized - then, apply fiberglass cloth and epoxy in place. (available at your auto parts store).
I would not suggest Polyester Fiberglass Resin for this job. E-P-O-X-Y only.
Raka Epoxy is a mail-order product and worth the money. https://raka.com/epoxy.html
this is something that you need to research on line to see what will work in your case.
Personally, I would recommend the West System G/Flex 650 epoxy to seal the seams. Available at several online sources.
https://www.amazon.com/NRS-flex-Epoxy-2-4oz/dp/B002IZFPQE/ref=sr_1_cc_1?s=aps&ie=UTF8&qid=1481908617&sr=1-1-catcorr&keywords=G-Flex+650
it is a little expensive. There are several good videos on YouTube. A little goes a long way once warmed up.
I ordered two kits from Amazon @ $28.00 for two 4oz bottle kits - mixed one to one.
The project I am working on is quite extensive - and I want to do it right the first (and only) time.
I will use the G/Flex epoxy on the outside of the hull, then when flipped over and ready for paint,
I will use the Gluvit to seal the inside of the seams - then prime and paint.
Liquid epoxy would be the best fix. Just depends on your budget and how many times you want to fix it.

https://www.youtube.com/watch?v=UCOziXeTXzY

Please avoid caulks and especially anything that contains 100% pure silicone.
two-part epoxy putty is a band aid - it does not seap into the seams, cracks and crevices.
do it wrong and you open the door to possible future crevice corrosion issues.
Never-Ever use those "spray seal" products on boats as seen on TV !!!!!!!!!!!!!!!!

good stuff is expensive - bad stuff is cheap

jus my Dos Centavos







.

Coat-It is available at Home Depot and Walmart in the US. I had to order it online in Canada.

stinkfoot said:

Coat-It is available at Home Depot and Walmart in the US. I had to order it online in Canada.

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Man I love me some zappa!!!ĺĺļĺĺĺĺĺ

Johnny said:

good stuff is expensive - bad stuff is cheap
.

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& the cheap fix usually ends up being the most expensive! because it has to be redone