Tubes detached from stern/transom

[Invasive]

Hi,


The strip that holds the tubes to the hull has ripped on both starboard and port sides in the aft. There are a lot of old repair patches and glue, some better and some worse. I think it's best to leave the old patches on, just round the loose, pointy corners and glue them back, since they seem to be firmly attached otherwise.



How would you fix this? I'm thinking about two ways to approach it, see the last picture.


1. Put a single patch to cover the whole area (blue). Problem: there is a little bit of difference in height between 'sternum to tube' and ' "lengthways" to tube' which might result in a bubble at the corner because it could be hard to press the two layers completely tight.



2. To first put on the red strip and on top put the green. This seems not really good either because it leaves the corner more fragile and water can also get in between the hull and tubes.


The aft corners seems to be the most vulnerable place of the tube attachment. Is this a common problem? I tried to find images of how tubes are originally attached on RIBs, but can't find what it looks like from underneath.


Thanks!

[Peter_C]

Remove all the tabing, clean off the old glue with scuffy pad and acetone, scuff the surface, and re-glue it with a 2 part glue. It's a lot of work. Get to it!

There is far more to doing the job though. Are you going to farm it out or DIY?

[tinker]

Use a heat gun to remove the old patches and label and photograph them as the come off, it's easy to get mixed up........

[User name]

I'd agree with the guys above. Remove all old junk.

The green example in your diagram would be prone to tearing at that inner corner again. I'd go with a rounded or L-shaped patch to spread across the corner and then maybe your larger (blue line) patch over the top. You'll want to make sure the back side is well bonded to the hull too. That part will be a bit more awkward to clean out and glue.