As of 2016, some retailers that sell rigid foam blocks include UnivFoam.com and GeneralPlastics.com. These are both online stores that sell rigid foam blocks and other foam products.Continue Reading
UnivFoam.com sells more than 10 different size rigid foam bricks. These come in cases with between eight and 72 bricks in them, depending on the size of the bricks. All of the bricks are white in color and available in the company's craft section.
GeneralPlastics.com offers thermal insulation foam blocks. These are made from high-density cellular polyurethane and are designed to help accommodate the weight of a building, while adding insulation where needed. These bricks can help lower energy costs.Learn more about Building Materials