How is it that just recently I noticed warping in my gesso boards? It seems that all my RealGesso boards are warped, to some extent right out of the wrapping. The Natural Pigments boards exhibit little to none.
This board is the furthest out of whack, perhaps because it received a few fully covered layers?
The Natural Pigment boards have some gesso on the backside, and I suspect they are also sized. The RealGesso boards have no gesso on the back. They might be sized; I'm not sure.
I've read in many places that warping is common without back coatings, especially as board size increases. Sometimes bracing is used. I have rabbit skin glue and gesso mix so I could probably try working these boards up myself. I have contacted the manufacturer for guidance. More on this later...