Colleague advises me not to barrier coat my 29.5 Hunter unless it has dried out for 3-4 months because I may inadvertently seal in the moisture, thus creating blisters instead of preventing them. Any thoughts?
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listen to them
Your colleagues are telling you the truth. Listen to them. Open the blisters, and thoroughly wash with water and than let it dry "on the hard", preferably over the winter storage season, than use fairing compound and than a barrier coat.
Your colleagues are telling you the truth. Listen to them. Open the blisters, and thoroughly wash with water and than let it dry "on the hard", preferably over the winter storage season, than use fairing compound and than a barrier coat.
Can't tell.
It is difficult to tell until you get the bottom down to clean gelcoat. My 1979 H37C had 50 or so pencil eraser size "pock marks". I opened them anyway and there was no glass or matt, just more gelcoat. Still I faired them and applied five heavy coats of Interlux 2000E. In other words there was no sign of moisture. I painted within two weeks of getting the bottom clean. That took two solid weeks of scraping and hand sanding! But Andre is right. If there are blisters then you have to open them and let the boat dry. You can speed the process with a "tent" and lots of heat.
It is difficult to tell until you get the bottom down to clean gelcoat. My 1979 H37C had 50 or so pencil eraser size "pock marks". I opened them anyway and there was no glass or matt, just more gelcoat. Still I faired them and applied five heavy coats of Interlux 2000E. In other words there was no sign of moisture. I painted within two weeks of getting the bottom clean. That took two solid weeks of scraping and hand sanding! But Andre is right. If there are blisters then you have to open them and let the boat dry. You can speed the process with a "tent" and lots of heat.
Let me clarify...
I'm presuming I don't have blisters, just clean hull. So the issue isn't blisters per se, but the danger of creating them by sealing in some other moisture in the gelcoat. Sorry for misleading you, Andre.
I'm presuming I don't have blisters, just clean hull. So the issue isn't blisters per se, but the danger of creating them by sealing in some other moisture in the gelcoat. Sorry for misleading you, Andre.
Check with paint mfg'r
Interlux will take your phone cals and answer your question. http://www.yachtpaint.com/usa/
Interlux will take your phone cals and answer your question. http://www.yachtpaint.com/usa/
borrow moisture meter
hi I did this job last year. it is important to make sure that the laminate is dry ther are 2 way that work borrow or rent a moisture meter or tape little squares of plastic wrap to the hull with blue tape and give it a couple of days if there is any condenstation in the squares it needs to dry out more. place them in a few spots on the hull it works but it looks strange. goood luck mike
hi I did this job last year. it is important to make sure that the laminate is dry ther are 2 way that work borrow or rent a moisture meter or tape little squares of plastic wrap to the hull with blue tape and give it a couple of days if there is any condenstation in the squares it needs to dry out more. place them in a few spots on the hull it works but it looks strange. goood luck mike
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