I ended up sealing my Konrad mast. Worked a treat. My NP mast (newish), I have not as yet. That drainage hole in it obviously works well to let water out...but also lets it in.

Who is sealing their NP mast? And if you did, did you just do the drainage hole - or did you do all the cavity points?

With the lock down, I now have time to contemplate life's big questions.....

Thanks DWF. On the foil mast I did seal, I put some small foam bits in the cavities for the silicone to push up/seal against. Didn't consider the expanding foam option.

I can only assume it's too hard to make the masts sealed during the manufacturing process?

To seal or not to seal.....that is the question.... Shakespeare?

I decided not to seal the NP mast. Unlike my other Konrad foil that I sealed just fine with silicone (which is 'flush' / flat / even at each end), the NP has a massive multi depth cavity at the baseplate end....which put it in the 'too hard basket'.

Carbon....one day....