Fix joint between stringer and wall

[Choom]

Tec 7 is kind of the best universal substance for sealing, caulking, and perhaps even gluing. You can even seal underwater. However, it is also the most sticky/gluey I've tested. Not as easy to spread nicely as a regular latex sealant, in my experience.

 

[ToRy]

10 mm feels like quite a lot for latex... On the other hand, do as you thought in post #9. Seal it first, if it goes wrong you can just put a strip over it later.

 

[vectrex]

Can also give a shout-out to tec7. I think it's absolutely superb. It's paintable and properly flexible. I've used it for everything from sealing panels on the outside of the house to bathroom joints to gluing plastic and wood together in my woodworking shop.

 

[tergo]

using tec7 cleaner makes it easier to get nice joints

https://www.tec7.se/Default.aspx?ID=3541

 

[Mazen]

Biltema's MS polymer is a cheaper alternative to Tec7 that has good movement capability, 25%, adheres and fills well. I have started using it more and more instead of Tec7, which was previously the only choice.
https://www.biltema.se/bygg/kemikalier/ovriga-kemikalier/bt-multibond-2000028571