Osi, 28 oz, sf450 + polyurethane, can be used in most interior & exterior construction projects either on the job or the production line, bonds all wood to wood assemblies dry, wet or frozen, primarily designed for on site bonding of subfloor & plywood decking to joists during cold weather, suitable for subfloor, glued floor systems, tongue & groove flooring, standard wood construction, concrete, masonry, & wood to wood assemblies, ideal for use in prefab or modular construction.