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Yeeaaahhh I got the Osssmosis Bluuuues... Could be a tune!

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Created by finsup 29 days ago, 29 Jun 2021
finsup
WA, 76 posts
29 Jun 2021 3:55PM
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G'day all,

One for the board construction repairer gurus.

Moisture in the board bag apparently... bit of a bugger but anyway more of a vibe killer more than anything. Can't see it from afar but rough to touch. Wouldn't affect performance and surely the board still watertight?

Option A = sand whole thing back to white and respray. Can't see that happening.

Option B = sand top off bubbles and touch up/respray white bits. Yeah but no way of knowing if will pop up in other places. could just treat as needed and not really worried about cosmetics.

Option C = just leave it. But what if moisture continues to get in under the popped bubbles. paint could get flakier. and is that white substrate 100% watertight? would it be affected on repeated exposure to water?

Its a custom full carbon sm !k.

What type of paint/process/course of action would be the best?

I've got the color code but if it were a choice I'd make the thing white and glossy it does get hot super quick esp. on the roof racks, and now I really don't want to use the board bag again!

Cheers and regards





MangoDingo
NT, 616 posts
30 Jun 2021 6:36AM
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FinsUp - spewing man!!!
Geez, where do you start?
I'd definitely reach out to the manufacturer and see if there's a way to fix that's effective and low cost.
Is this common with this brand?
I'd be keen to understand how moisture gets in underneath that paint?
I'd be looking for advice from the manufacturer- you'd reckon a new full carbon board would last a bit longer than a few months eh?

finsup
WA, 76 posts
30 Jun 2021 6:30AM
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Yeah have done but yet to get back with any advice, understandably. But It is a thing osmosis. Heaps on the net about it, and other breeze threads.
Reckon I'll just give it a light sand and touch it up. Just want to use the correct type of paint.

Souwester
WA, 1198 posts
30 Jun 2021 9:56AM
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Arrrgh, thats a pain isnt it!

I had a small amount of it on mine last year, since then a good shammy off after a surf and when I can leave it out of the bag or leave bag unzipped.

Hard to stop all moisture but it seems to have helped.

FRP
436 posts
30 Jun 2021 10:14AM
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Select to expand quote
finsup said..
G'day all,

One for the board construction repairer gurus.

Moisture in the board bag apparently... bit of a bugger but anyway more of a vibe killer more than anything. Can't see it from afar but rough to touch. Wouldn't affect performance and surely the board still watertight?

Option A = sand whole thing back to white and respray. Can't see that happening.

Option B = sand top off bubbles and touch up/respray white bits. Yeah but no way of knowing if will pop up in other places. could just treat as needed and not really worried about cosmetics.

Option C = just leave it. But what if moisture continues to get in under the popped bubbles. paint could get flakier. and is that white substrate 100% watertight? would it be affected on repeated exposure to water?

Its a custom full carbon sm !k.

What type of paint/process/course of action would be the best?

I've got the color code but if it were a choice I'd make the thing white and glossy it does get hot super quick esp. on the roof racks, and now I really don't want to use the board bag again!

Cheers and regards







I live in a fairly humid environment and my board is wet most of the time. Fortunately I have observed nothing like what you have experienced. Does this happen in both fresh and salt water? One would think that as salt water dries the salt concentration rises and there is less osmotic force.

Bob

finsup
WA, 76 posts
30 Jun 2021 10:24AM
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yeah its not a huge issue. Got a reply can just sand and touch up if need be. Otherwise no probs with integrity.

finsup
WA, 76 posts
30 Jun 2021 10:36AM
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Select to expand quote
FRP said..

finsup said..
G'day all,

One for the board construction repairer gurus.

Moisture in the board bag apparently... bit of a bugger but anyway more of a vibe killer more than anything. Can't see it from afar but rough to touch. Wouldn't affect performance and surely the board still watertight?

Option A = sand whole thing back to white and respray. Can't see that happening.

Option B = sand top off bubbles and touch up/respray white bits. Yeah but no way of knowing if will pop up in other places. could just treat as needed and not really worried about cosmetics.

Option C = just leave it. But what if moisture continues to get in under the popped bubbles. paint could get flakier. and is that white substrate 100% watertight? would it be affected on repeated exposure to water?

Its a custom full carbon sm !k.

What type of paint/process/course of action would be the best?

I've got the color code but if it were a choice I'd make the thing white and glossy it does get hot super quick esp. on the roof racks, and now I really don't want to use the board bag again!

Cheers and regards








I live in a fairly humid environment and my board is wet most of the time. Fortunately I have observed nothing like what you have experienced. Does this happen in both fresh and salt water? One would think that as salt water dries the salt concentration rises and there is less osmotic force.

Bob


gday Bob
I have been making an effort to not think about the chemistry too much! There is some wild info out there regarding this effect, but yes, which way is the concentration gradient?
Has fresh water gone in toward some high concentration of chemicals, or has stuff tried to get out toward higher concentration salt water?
My thinking is, fresh hose water has gone in helped in some way by heat (ironically from sun getting on whilst drying it), then molecules collect/expand and force bubbles up. In serious cases like on boats the water trapped under the bubbles actually starts to react with the substrate causing little hollows.
.... might make it go faster, like a golfball

colas
4267 posts
30 Jun 2021 1:16PM
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- contact the manufacturer. Different types of paint / varnishes exist, he may have relevant advice
- let it dry, the bubbles will most likely disappear
- never store in a bag. Use a bag for travel only, (with the zipper open as much as possible), and store it out of a bag.

justaddwater
NSW, 316 posts
30 Jun 2021 3:48PM
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Totally agree ! bags are for travel protection ,other than that they are more trouble than they are worth .IMO.About the paint finish go rat look,I personally love the distressed rub through look

finsup
WA, 76 posts
30 Jun 2021 3:06PM
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yep bag's for travel only from now on.
And yes the good thing is, it takes the wince out of any nick or bumps from now on too.
Just surf it!!!
Cheers

geared4knots
TAS, 2628 posts
30 Jun 2021 6:16PM
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Every board i sell i let the customers know that this could happen. Osmosis they say. It cant be reversed.
When you pack your board away leave the zips open.
Dont worry i learnt from that mistake on a $3000 windsurfer years ago
cheers

MangoDingo
NT, 616 posts
30 Jun 2021 7:18PM
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Select to expand quote
justaddwater said..
Totally agree ! bags are for travel protection ,other than that they are more trouble than they are worth .IMO.About the paint finish go rat look,I personally love the distressed rub through look


Yep FinsUp - fully agree with JustAddWater on this one.
Sick opportunity to go all out Rat-vibe.
Embrace your inner Derek Hynd - keep it Core and carve your own lines.












supsean
137 posts
30 Jun 2021 8:10PM
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whatever you sand off will only make it lighter!

Linkus
45 posts
30 Jun 2021 11:27PM
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The same problem happened on my Fanatic Allwave Carbon, the blue one like this. Let it dry on open air the bubbles probably disappear like my Allwave. On Fanatic there was also a little red label with the warning about the moisture.

Helmy
VIC, 771 posts
1 Jul 2021 3:46PM
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IMHO - don't embarrass yourself by contacting the manufacturer.
Chuck the cover out.
Let it dry out and just surf it. It's really only cosmetic.
Filling / painting etc will add weight, you won't be able to replicate the original finish, and it will guarantee that you'll ding it next time you're out anyway.
Keep it as is, as a reminder of how not to store your boards in future.

finsup
WA, 76 posts
1 Jul 2021 2:28PM
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check, check.... check,
and,
check.

robertboyd2000
QLD, 18 posts
2 Jul 2021 6:53PM
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Board covers are only for plane travel. A white underside keeps them cool enough to stay on the roof track year round with little deterioration. ****e happens

Seajuice
NSW, 790 posts
5 Jul 2021 3:45PM
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Finsup. Thanks for the warning. Sometimes I forget to keep my board bags open to air them out. So today I checked most of my SUPs. And guess what? One of them showed some minor osmosis. It was my Coreban that I use quite often for foilboarding. I converted it to take a foil just over 2 years ago.
I mainly store it on its rail in the garage.
So I found the osmosis mid length on the rail that touches the floor. So I'm guessing the moisture from the deck bad may flow downwards to that spot and will keep it moist for longer than othe parts of the board.
I always rinse my boards with fresh water & towel dry after a surf before putting them in the bag. But towel drying doesn't ensure complete dryness. Especially deckpads that soak in water.
I'm guessing it's the paint more so than epoxy. My Sunova boards have no osmosis at all. They aren't painted. One of my Sunova's is around 6 or 7 years years old & has always been bagged. And has been used heaps!
I'm guessing some paints are more susceptible to osmosis than others.
So many different grades of paint on the market & virtually impossible to know what type of paint is sprayed over a board when new.






finsup
WA, 76 posts
5 Jul 2021 5:09PM
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Crapola that's a bugger. Looks like you got it early though.
doesn't look too bad.
My photos are quite close up and do make it look worse than it actually is. Its been dry now for a while and I think (maybe telling myself!) that its flattening out a bit.
and yes, no way I'm replicating the finish on the carbon it's a mega thin almost transparent coat. Just gonna have to stay how it is and serve as a lesson learnt I reckon.

Seajuice
NSW, 790 posts
5 Jul 2021 10:02PM
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Select to expand quote
finsup said..
Crapola that's a bugger. Looks like you got it early though.
doesn't look too bad.
My photos are quite close up and do make it look worse than it actually is. Its been dry now for a while and I think (maybe telling myself!) that its flattening out a bit.
and yes, no way I'm replicating the finish on the carbon it's a mega thin almost transparent coat. Just gonna have to stay how it is and serve as a lesson learnt I reckon.


Yeah. Give it time & wait & see. Maybe in the future as your board gets older you may want to give it a sand & respray if it's needed at all.
The board I've shown has quite a few battle scars including the paddle blade slicing through the deck a few times. So this osmosis is nothing. The bottom of the board is still like new.
And I've actually painted an extra coat of epoxy over the right side rail for extra protection before sticking rail saver over that as well. I'm more brutal on my foil board than my SUPs.

colas
4267 posts
7 Jul 2021 12:46PM
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Seajuice said..
So many different grades of paint on the market & virtually impossible to know what type of paint is sprayed over a board when new.



Osmosis is water seeping through the paint, and then being stopped by the underlying epoxy. It can then accumulate and create bubbles. So it is only an issue on painted boards.

There are different kind of paints (glycerophtalic, acrylic, epoxy....). You should contact the manufacturer to know which one was used.

Seajuice
NSW, 790 posts
9 Jul 2021 10:59AM
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Select to expand quote
colas said..

Seajuice said..
So many different grades of paint on the market & virtually impossible to know what type of paint is sprayed over a board when new.




Osmosis is water seeping through the paint, and then being stopped by the underlying epoxy. It can then accumulate and create bubbles. So it is only an issue on painted boards.

There are different kind of paints (glycerophtalic, acrylic, epoxy....). You should contact the manufacturer to know which one was used.


Thanks for confirming Colas. Something to take into account when buying new.



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"Yeeaaahhh I got the Osssmosis Bluuuues... Could be a tune!" started by finsup