Sunlight on Epoxy

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Lobes
Lobes
885 posts
885 posts
15 Oct 2009 9:12am
A technical question here if anyone can help.

What is the effect of UV on my boards exterior? I paddle most evenings after work and because of the stairs to my apartment its very difficult to take my board home afterwards. Where I paddle I have a safe relatively sheltered place I can store my board but its got no shade and the board will be exposed to direct sunshine most of the day.

Will this have a degrading affect on the boards finish? Is it better to put the board in a bag or am I just degrading my bag when perhaps the board will be fine in direct sunshine?

I have an old goat boat thats kept in the same spot for many years and it seems ok, would my SUP be much the same or am I reducing the lifespan. Board has white bottom and I always store it grip down.
hilly
hilly
WA
8133 posts
WA, 8133 posts
15 Oct 2009 10:35am
It will reduce the lifespan of the painted surface. The epoxy is under 2pack I assume. May delam if really hot; unless you have a breather you undo.

How about shade cloth over the top??
LSD
LSD
VIC
763 posts
LSD LSD
VIC, 763 posts
15 Oct 2009 2:42pm
hilly said...

It will reduce the lifespan of the painted surface. The epoxy is under 2pack I assume. May delam if really hot; unless you have a breather you undo.

How about shade cloth over the top??


Hi Lobes,
What Hilly says is true, uv will degrade paint, even top quality PU in time.

Leaving the board in the sun is a good way of finding leaks!.....you may notice a drip or a hisssss......but the reverse may happen when using the board in cooler water after its been breathing out all day in the hot sun
If you have an epoxy board it won't like uv, one sure sign of epoxy is that it will yellow in a few days of strong sun, it can take years to become chalky & weak.
Some surfboard epoxys are uv stable...so they say..
Can you post a shot of the board?

PS...What I'd be doing if I wanted to look after my board in your situation is just throw a light coloured sheet over the board.
Lobes
Lobes
885 posts
885 posts
15 Oct 2009 12:24pm
The board is a Naish Glide.

I think the sheet may be the way to go.
Piros
Piros
QLD
7303 posts
QLD, 7303 posts
15 Oct 2009 4:42pm
Lobes covers are less than $200 just get one it will give heat insulation plus keep the sun off. Or at least make a rack with a little roof and a drop down shade cloth.

Piros
Bnaccas
Bnaccas
VIC
1722 posts
VIC, 1722 posts
16 Oct 2009 1:31am
The guys at Shapers said UV epoxy resin is a myth. Cos the board is painted the sun
won't effect the epoxy but as the others said it may effect the paint work.

However if it is 2pack i would think it won't get too effected by the sun light, seeing
cars are done in a similar way. Best to be safe and cover with a light coloured sheet.
I will post a pic of my board rack setup when I can get a photo.
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