It IS the blank that yellows, not the resin? Have a couple of boards that were sprayed white on the blank prior to glassing. A year later, they’ve started to yellow…must be the resin. Maybe just tint the resin for more protection?
keep it in a closet ,no light or uv rays…then it will stay white longer…or try brown tint or paint ,then it can look new forever…or you could put sunsrcreen on it…might be a little slippery though.
Liki, it is the foam that yellows but the glass will also yellow some over time… best way to have nice white looking board for years it to paint the shaped blank white but add a slight touch of blue to the white paint, I also apply Zymol Hand Crafted all natural wax protection to my finished glassed boards …keeps them nice and new looking for a long time…
…all suffer with uv…
…the blank, the resin, the car wax, the lacquer…
all have hydroxy benzophenone or hydroxy benzotriazole…
I’ve stripped the glass off old boards for restoration, and I’ve always found the foam is still white (unless water got in). I’ve also seen a number of boards where the lam coat was pigmented white. Some of these were over 5 years old and no yellowing. The worse yellowing comes from not taking care of the board and storing it outdoors in the sun. If you bag or sock it when it’s not in the water, and rinse it off and dry when your session’s over, it won’t yellow for a long time.
…also there are several foam that have got antioxidants…who prevents yellowing in the foam near the crust…
Howzit Shipman, That's a little trick I learned from my nephew, and you can also add a bit of red or even black. Painters do it for cabinets in the kitchen and bathroom to keep the cabinets from yellowing. Blue gives the white a cool hint and red give it a warm look. I like to use the black my self since it seems to work the best. I like to add a little black to other colors when I paint a board, it gives the color a strange but nifty look. Aloha,Kokua