That’s why to seal with epoxy and a filler, it still migrates into the pathways between the beads, but only a limited amount is on the board, no so much leeching as in a full on lamination.
One of the guys tried to salvage a set of futures from an EPS that snapped, it wasn’t sealed first and the boundary layer of beads that had been bonded to resin was almost 3/4" deep. Resin seals don’t delam like spackle
Thanks for the input everyone. Yes I do want a stronger board, that’s why I have never tried a sealer before, but when I feel a pro built board they always seem so much stronger. But I’ve never really had any problems with delaming, just hard core dings, and one of the stringerless boards blew up at the nose. But it sounds like I should be alright to try the micro and resin sealer. If the river eats the board up I’ll let you know.
I plan on filling the deck of my board, but leaving the bottom raw, so the resin can fill and grip in the cavaties (hopefully preventing a delam) . Im doing a clear resin on the deck but doing a blue swirl on the bottom. What does everybody think? Is this a alright idea, or am i just asking for trouble.
Wait, your worried about the bottom delam’ing, I would worry about a deck before a bottom.
If any thing, seal both sides, sand the sealer coat smooth, better cosmetics, less resin percolating down into the foam.
I recently snapped my styro stringerless, it was 2x4 oz, S on both sides, double sealer top and bottom, but the cloth did NOT peel away from the foam, where I tore the two parts from each other, beads tore out, that was a good bond.
I’ve seen spackle fill coats come away clean like the board had mold release on it
It’s always what i see when my board buckle: the foam tears out (because of shear) about 2 or 3 mm in core so i have a skin with bead glue on. I do some peel test with spackle, resin micro and just resin seal, no real difference but when i do buckling test (3 point flex test) there is noticeable difference, when resin go deeper in core better is buckling resistance even with less fiber…
Sorry for my frenglish
If you’re using billet foam, seal both sides. If you’re using high quality pressure molded 2lb foam, you may or may not seal, depending on how well the shaped blank finished out.
I did a few micro resin seals and then i tried the light weight spackle I dint really notice a diiference. I build river surfboards and use 2 layers 6oz top and bottom so i fix a lot of rock smashed boards and there has never really been any excess delaming in the damaged area. Now i spackle top and bottom dont bother with the rails cause they typically sand out with no pits.
none of my 2lb eps boards have ever snapped so i couldnt give any info there
Also never seen one delam from heel dings
Seal both sides.
thanks for the insight lemat
yeah thanks alot for the info. Just did it yesterday, gonna sand to day order resin by friday in the water by next week. hopefully. Will post some pictures after im all done.