How to fill this gap between timbers?

[redhexagonal]

There is a 5mm gap between the bottom of a stringer and the skirting. What can I fill the gap with? Can I put some foam in and then easifill? Or is this a caulk job…

 

[foxhole]

Just caulk

 

[redhexagonal]

Just caulk

Caulk always seems to crack or the paint peels off it, is there no better way?

 

[Deleted member 174758]

Caulk always seems to crack or the paint peels off it, is there no better way?

Rip out the skirting and replace it with a piece that actually fits correctly. Anything else will potentially move, crack and show through over time.

BTW done properly the bottom of the stringer should have been terminated on a plumb cut, not just continue down like that.

 

[foxhole]

Caulk always seems to crack or the paint peels off it, is there no better way?

Only cracks if surface is contaminated, same with paint .

 

[Deleted member 292770]

use tubed cove adhesive from ts . same as caulk but doesn’t shrink and crack. and it’s cheaper.