A very good PBO review of ten sealant/adhesives here
https://www.pbo.co.uk/gear/which-adhesi ... best-20877Obviously Sikaflex (presumably now 291i) is what we had from HM on new boats if that’s what they did as maintenance and Charles’s pictures and commentary are a great help with that job. Thanks Charles as I will need to re-run the seal beneath my port rubbing strake
But I was interested that the PBO article didn’t rate 291i very highly - albeit they may have been focusing on adhesive qualities and it is important sometimes to have a sealant that is not going to pull off your gelcoat if you need to take A fitting off.
I will be fitting new S/S deck fittings for my turning blocks and in view of the PBO comments I have decided to use butyl tape/putty rather than Sikaflex where steel is concerned.
All the best
Malcolm