Older fibreglass boards may, but it would take a while.
The bags are more about impact protection.
If you see a bag with silver film on it, you may think it is to stop UV: is
isn't. It is just to keep the boards cool as heat *can* damage epoxy
>> I know that UV is not good for sails but was wondering about its
>> affects on boards. I see a lot of cars come to the launch in bags on
>> the top of cars and was wondering if the reason was to protect from
>> the sun or from nicks from rocks flying up ect. If I leave my
>> unprotected board on the top of my car for 2 weeks is it likely to
>> suffer damage from the sun?
> If you have a new style board which is painted epoxy, then no. No UV will
> get thru the paint obviously.... the paint will degrade eventually but the
> integrity of the board will not suffer.
> Older fibreglass boards may, but it would take a while.
> The bags are more about impact protection.
> If you see a bag with silver film on it, you may think it is to stop UV:
> isn't. It is just to keep the boards cool as heat *can* damage epoxy
> Bad idea to leave board strapped on top of car for extended periods of
> time or even expose board to direct sun and heat of car parked in a
> asphalt parking lot as well during hot summer days. UV DOES damage
> everything and the more exposure, the quicker the paint or plastic
> deteriorates. Summer heat and high parking lot temps will cook your
> board up on top and break down the epoxy and resins inside. So,
> bottomline to get the most life out of your board is to get it off the
> top as soon as it is transported and put it inside or in the shade.
Bottom line is that heat and UV are bad for your gear and exposure to either
should be kept to a minimum.
Formerly of The Water Planet
Now just have a car big enough to carry 3 boards, 2 masts and 6 sails that
seem to live in their permanently all summer.
236cm long EVO's help in that regard also.
I asked for (and got...) a regular surfboard fin box on the
board. As an afterthought, I phoned him up and asked him if it
would be strong enough for the intended use (16" slalom fin, 220#
To make a long story short, I should *not* have asked such a
question of him.
"Look dude you drive thousands of miles with plastic headlighs and
glass exposed to flinging rocks, those things last fairly well, and my
boards are stronger. So go sail hard put the board on the racks in the
proper way, no straps cutting rails, (Parton had sharp rails) get
home, love your wife and family, have a beer, eat well and sail
tomorrow. Grinding sand in a bag, can do damage too. DO what you think
I always feel that unbagged is better, unless a whole bunch of other
gear is banging against the board. which is hard to understand and
results in rash. In fact I have a trailer and often strap a bare board
to the car racks just because it is so much gentler to the board. UV
and vent screws are not issues. Texas heat may be different because at
somewhere above 140 degrees Epoxy starts to change, but in general as
long as the interior pressure of the board is set via vent***"as
hot" or "as cool" additional heating on the roof is not gonna hurt.
Now, lay a garbage bag on your board in direct sunlight...that is a
close the vent in Alaska at -40 and 4 days later sit in Walmart
Parking lot Corpus Christi you may want to vent your board. (do it so
you can bring a pound of water back to Alaska inside your board.
Timing is everything)
UV can kill raw resin
Paint or gelcoat is an impervious barrier to the stuff underneath,
although sometimes sacrificial. EVA will fade and accesories will
degrade in UV, so do we. Use the same prudence.
> >I bet that was pre-vent screws and I suspect that's not the case
> >anymore. Your thoughts?
> This one had a vent screw. I think John Parton had a strong
> sense of pride in the quality and durability of his boards'
> I asked for (and got...) a regular surfboard fin box on the
> board. As an afterthought, I phoned him up and asked him if it
> would be strong enough for the intended use (16" slalom fin, 220#
> To make a long story short, I should *not* have asked such a
> question of him.
> >Lohr who introduced glass boards also had a reputation in Fla. for
> >making boards that would explode when left in closed cars in the sun.
> >You run a much better chance of damage leaving your board inside a
> >closed car than on the roof. Today's boards are made with vent screws
> >which can relieve internal pressure so white board bags have been
> >discounted in most shops in North America.
> When I bought a semi-custom Pro-Tech, the board came with a note
> from John Parton to the effect that his boards can survive trips
> to/from the beach just fine without a bag and that a bag
> increases the risk of heat/pressure damage.