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13-08-2015, 12:03
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#1
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Registered User
Join Date: Nov 2012
Location: Long Beach, CA
Boat: Tayana Vancouver 42
Posts: 2,804
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PVC dinghy UV breaking down
This may have been covered many times before but I can't find it even with Google search so I'm asking.
Yes, I went the cheap route and bought PVC rather than Hypalon. The dinghy is two years old and not leaking, not joints coming unglued, but all of the PVC add ons ( rub strake, logos, oar locks ) are a gooey mess from UV exposure. Is there anything I can use at this point to replasticise or paint over these parts?
Yes, I should have bought Hypalon. Yes, since I bought PVC I should have used a UV protectant more often or kept it covered. I admit it. But here I am now. All "I told you so" comments humbly accepted. Any help is greatly appreciated.
S/V B'Shert
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13-08-2015, 12:22
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#2
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Moderator Emeritus
Join Date: Oct 2013
Location: Jacksonville/ out cruising
Boat: Island Packet 38
Posts: 31,351
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Re: PVC dinghy UV breaking down
Only thing comes to mind is to make some Sunbrella covers (pants) for the tubes and keep the sun off of it.
I believe the rub strakes on my Hypalon dinghy are PVC too.
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13-08-2015, 12:25
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#3
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Registered User
Join Date: Nov 2012
Location: Long Beach, CA
Boat: Tayana Vancouver 42
Posts: 2,804
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Re: PVC dinghy UV breaking down
Thanks for the quick reply a64pilot. Yes covers or chaps are one solution but cat more than the dinghy is worth.
S/V B'Shert
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18-08-2015, 04:47
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#4
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Registered User
Join Date: Mar 2006
Location: Nevada City. CA
Boat: Sceptre 41
Posts: 3,857
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Re: PVC dinghy UV breaking down
__________________
Fair Winds,
Charlie
Between us there was, as I have already said somewhere, the bond of the sea. Besides holding our hearts together through long periods of separation, it had the effect of making us tolerant of each other's yarns -- and even convictions. Heart of Darkness
Joseph Conrad
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18-08-2015, 04:55
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#5
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Registered User
Join Date: Jun 2008
Boat: Tartan 40
Posts: 2,473
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Re: PVC dinghy UV breaking down
303 aerospace protectant is sunscreen for dinghies. Probably easiest and cheapest compared with chaps and new dinghy
http://www.goldeagle.com/product/303...ace-protectant
Sent from my iPad using Cruisers Sailing Forum
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18-08-2015, 07:16
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#6
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Registered User
Join Date: Nov 2012
Location: Long Beach, CA
Boat: Tayana Vancouver 42
Posts: 2,804
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Re: PVC dinghy UV breaking down
Charlie, thanks for the link. I'll look into it. Don't know if it is good over the deteriorated PVC but I'll check.
S/V B'Shert
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18-08-2015, 07:20
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#7
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Registered User
Join Date: Nov 2012
Location: Long Beach, CA
Boat: Tayana Vancouver 42
Posts: 2,804
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Re: PVC dinghy UV breaking down
Malbert73, thanks. I do have the aero 303 which I should have used more often before having this problem. I did try wiping off as much of the sticky stuff as I could with terry cloth rags and then applying the 303 but it didn't solve the problem. Didn't stop it from getting worse.
S/V B'Shert
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18-08-2015, 08:05
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#8
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Registered User
Join Date: Jan 2010
Location: Port Ludlow Wa
Boat: Makela,Ingrid38,Idora
Posts: 2,050
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Re: PVC dinghy UV breaking down
Pressure wash the goo away. I know, I know... but do it anyway. Then wrap the whole thing up in white plastic like they shrink wrap boats in. You can cut the plastic to make a cover. That will stretch out the life of the PVC. Then when the poor thing eventually fails you can remember to buy a hypalon dink. My exact situation now....Oh the humanity!
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18-08-2015, 08:11
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#9
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Registered User
Join Date: Nov 2012
Location: Long Beach, CA
Boat: Tayana Vancouver 42
Posts: 2,804
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PVC dinghy UV breaking down
IdoraKeeper, thanks for that suggestion. Did you do the pressure wash yet? Did it remove the goo? I'm concerned that it might damage the glue joints but it may be worth the risk and may buy some time with this piece of ... PVC. Did you use the heat type of shrink wrap to cover it? Did you wrap the entire dinghy or could you just cover the bad spots? Any photos?
S/V B'Shert
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18-08-2015, 08:12
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#10
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Registered User
Join Date: Oct 2011
Posts: 3,604
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Re: PVC dinghy UV breaking down
Just throwing it out there, but we have a lot helicopters that fly overhead our marina as well as commercial jets.
I have noticed some softening of a vinyl coating on the top side only of our bike locks while our neighbor had a PVC dinghy he said got ruined buy unburnt fuel raining down from the aircraft exhaust. Don't know if it is true or not.
Maybe a64pilot could confirm this is a possibility.
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18-08-2015, 08:15
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#11
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Registered User
Join Date: Nov 2012
Location: Long Beach, CA
Boat: Tayana Vancouver 42
Posts: 2,804
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Re: PVC dinghy UV breaking down
Around LA and San Diego there is a lot of air pollution from aircraft, from the major commercial ports and from truck exhaust. That might be part of the problem.
S/V B'Shert
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18-08-2015, 18:54
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#12
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Moderator
Join Date: Nov 2011
Location: aboard, in Tasmania, Australia
Boat: Sayer 46' Solent rig sloop
Posts: 28,524
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Re: PVC dinghy UV breaking down
Tayana 42,
Idora Keeper's the only one who has posted so far who has tried to deal with the situation when it got this bad. That solution should work.
I'd think you could take off the rub strake and glue another one on. Then paint it with house paint, or any cheap latex-based paint that is easy to use. When you don't like how it looks, paint it again. Same treatment for the rowlocks: clean as well as possible and paint.
We recently purchased a new PVC set of tubes for our RIB. We made the chaps for it out of WeatherMax. Cost maybe $200 or less Australian, but we already have had the sewing machine for a long time.
Should you get interested in making your own in the future, Sail Rite's web site has an article you should read before you start to make the patterns. (Don't ask! ) Also, the Sewing Group here on CF has quite a bit about making your own "chaps" for the dinghy.
Good luck with it. Icky problem.
Ann
__________________
Who scorns the calm has forgotten the storm.
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18-08-2015, 18:59
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#13
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Registered User
Join Date: Nov 2012
Location: Long Beach, CA
Boat: Tayana Vancouver 42
Posts: 2,804
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PVC dinghy UV breaking down
Ann, thanks for your comments, wise and practical, as usual. I think I'll try IdoraKeeper's suggestion of the pressure washer first, then paint. I don't think this dinghy in its present condition is worth the effort of chaps ( 8'6" air floor and icky ) and the next dinghy will be larger so chaps would not transfer easily. But chaps for sure on the next one. My wife is looking at the SailRite site right now.
S/V B'Shert
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18-08-2015, 19:10
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#14
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Registered User
Join Date: Sep 2012
Location: Washington State
Boat: Colvin, Saugeen Witch (Aluminum), 34'
Posts: 2,275
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Re: PVC dinghy UV breaking down
Quote:
Originally Posted by IdoraKeeper
Pressure wash the goo away. I know, I know... but do it anyway. Then wrap the whole thing up in white plastic like they shrink wrap boats in. You can cut the plastic to make a cover. That will stretch out the life of the PVC. Then when the poor thing eventually fails you can remember to buy a hypalon dink. My exact situation now....Oh the humanity!
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Hello IdoraKeeper,
I have read about PVC disintegrating in a few short years in the tropics. I am curious how many years of exposure your PVC dink had our climate before it started to deteriorate.
Thanks, Steve
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18-08-2015, 19:33
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#15
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Registered User
Join Date: May 2011
Location: Miami Florida
Boat: Ellis Flybridge 28
Posts: 4,059
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Re: PVC dinghy UV breaking down
I would treat the sticky stuff like it was an adhesive. I use 3m adhesive remover or WD40 to remove adhesive. You might give that a try and see what happens.
__________________
Retired from Hopkins-Carter Marine Supplies
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