Hi

What is that Plexus glue called for bonding hull to deck on Formulas? And where do i get it?
My hull to deck joint is coming loose so i would need to bond it together again.

Thanks
Kim Bomanson
Aland islands

Its made by ITW
PLEXUS

Is it the Plexus MA300 that used for this application?

contact them...there's different versions based on what you are doing and how fast you want it to kick off....they can guide you better.

MA425. You need to rent the gun also. There is a large thread with lots of good info on re bonding here on OSO. Just search hull/deck bonding failure. Not a huge job.

I think the biggest issue in the case of Formula's use of the Plexus is not that they had the wrong material...i think (and its only my theory) that they didn't know they needed a certain amount of gap between the materials being bonded for it to work properly. I remember reading in the Plexus literature that its need something like 1/16-1/8" gap between materials for it to bond properly...if they just lay the material down and then screw the deck and hull together it will squeeze the Plexus out and you have glass/glass contact and that's where it's possibly failing...not enough material for the bond to take place properly. I cant say that's the issue for certain but its just a guess

When we were doing all these 382's here on the west coast we tested the MA425 on fiberglass in the shop. The 425 defiantly penetrates the glass. The pieces we ripped apart ripped to the mat. There are a set of screws at the hull deck seam that can be used to NOT overtighten the joint, On our 5 boats it seemed that they had not used enough product. None of the repaired boats ever failed again. Its not a difficult fix, no paint work.

Old thread IMO......Formula may have a safety isssue with the hull/deck bonding. - Page 11 - Offshoreonly.com

Jon used 5200 on his 353 353 with separating rub rail. (repair) - Offshoreonly.com