We sell two types of what is commonly known as “urethane foam”—rigid polyurethane (U Series) and polyisocyanurate (R Series). Both have a tight cell structure that allows for high levels of detail and a smooth consistent surface. Polyisocyanurate (R Series) can be sculpted by hand or machine milled. Rigid polyurethane (U Series) are best tooled or milled. Both can be used with our fabrication adhesives and sealed with one of our spray coatings to create a long-lasting finish.