laika
Well-Known Member
From the one step forwards two steps back department...
Having ground out blisters, dried, laminated, filled and faired my rudder I have recently painted it with Hempel Gelprotect SFE 200. Several people advised me to use International gelshield but I was warned off it by others who pointed out that Gelshield 200 is solvent based and might interact badly with a repaired rudder and gelshield plus is a pro product which apparently I don't have the conditions to apply it in.
Next step is to apply an underwater primer. I was going to use primocon but my neighbour in the boatyard (who clearly knows rather more than I) was warning about possible negative interactions between layers from different manufacturers. The existing antifoul on the rest of the boat is micron extra (which has worked well for me) and I don't want to scrape all the old antifoul and apply something different. I always thought that stuff like primocon was specifically what you'd use to tie between 2 potentially dissimilar products.
Is a problem with using international primocon over hempel gelprotect sfe 200 likely or does it (as I suspect) fall into the category of "possible but so remote no rational person would worry about it". And if I should worry, is using a hempel primer with an International antifoul just as suspect? I really don't want to strip everything down to the gelcoat.
I was feeling pretty pleased with my rudder painting until now. My neighbour also pointed out the little ripples in the epoxy and suggested I should have stretched cling film over the wet gelprotect to get it smooth. Now feeling dispirited and incompetent again...
Having ground out blisters, dried, laminated, filled and faired my rudder I have recently painted it with Hempel Gelprotect SFE 200. Several people advised me to use International gelshield but I was warned off it by others who pointed out that Gelshield 200 is solvent based and might interact badly with a repaired rudder and gelshield plus is a pro product which apparently I don't have the conditions to apply it in.
Next step is to apply an underwater primer. I was going to use primocon but my neighbour in the boatyard (who clearly knows rather more than I) was warning about possible negative interactions between layers from different manufacturers. The existing antifoul on the rest of the boat is micron extra (which has worked well for me) and I don't want to scrape all the old antifoul and apply something different. I always thought that stuff like primocon was specifically what you'd use to tie between 2 potentially dissimilar products.
Is a problem with using international primocon over hempel gelprotect sfe 200 likely or does it (as I suspect) fall into the category of "possible but so remote no rational person would worry about it". And if I should worry, is using a hempel primer with an International antifoul just as suspect? I really don't want to strip everything down to the gelcoat.
I was feeling pretty pleased with my rudder painting until now. My neighbour also pointed out the little ripples in the epoxy and suggested I should have stretched cling film over the wet gelprotect to get it smooth. Now feeling dispirited and incompetent again...
