Major Delamination

[willi]

Glassed my first board shaped from 1.5 eps --- 2 x 6.5 layers glass rail wrapped -- used Resin Research Resin -- I am an experienced glass head boat builder ---soooooo
-- all  is fine till I put it on top of my car with a darker eva deck pad -- major delamination 12'' x 24'' on deck --so my plan was to drill a hole in the deck pour in some epoxy --rotate board so it moves around and weight down the deck and all is well ---
BUT ___ I Shine a Flashlight in the hole --looking at the foam core and it looked like it was honey combed -- almost like it melted -- the resin manufacturer told me the board got so hot on the top of my car the foam melted ? Really
Any insight in this ---thanks ahead of time

aloha

[Dwight (DW)]

Did you use Gore-tex vents?

Was the blank painted?

I had a famous shaper tell me no paint is safer and 2 vents is best.

[raf]

That sux big time.  It also doesn't sound right.

In the future, can you strap your board upside down, fin up? 

[PauHanaTX]

Yes, it can get hot enough to melt the foam.  Board bags and shade are a must, and yes, vent plugs.  I like to put mine offset over the stringer because the air flow is most likely best there.

[willi]

Really appreciate the input
Yes, I will keep the board pad down & use a lighter color-- my stupid mstake--;]
I did not paint the blank -- but did use some spackle -- will use epoxy to seal the next one -
It had a gore vent in it from day one -- I think the cubic air exhale was too much for the vent -- it is a thick board I use for lessons --so 2 would have been the smart choice ---
I just filled the void with the dreaded home depot foam and will use it till the fin drops off !!!
I have used horozontal stringers with pretty good success -- saves messing with a wood one-- not big surf though !!!
Thanks to all for the input ---
willi ,,,]