GP Gypsum will be modifying the sales price invoiced to you for ToughRock® gypsum
board, Dens® gypsum panel products (excluding DensDeck® roof board products) and
DensDefy™ accessory products for all U.S. markets effective with shipments on and
after January 3, 2022, as GP Gypsum continues to face increased cost of raw materials
and transportation for the manufacture and delivery of the products to you.
Download official letter HERE