RR401 | 4lb Concrete Raising Foam Heavy-duty polyurethane foam perfect for D.O.T. & industrial concrete repair Rocking concrete slabs caused by high traffic and heavy loads can lead to traffic hazards on our roads and possible OSHA issues in commercial or industrial settings. These safety issues require resolution, and ultimately led us to create a foam specifically for D.O.T., municipal, industrial, and commercial applications. About RR401 Polyurethane Foam Material RR401 is a 4 lb. per cubic foot foam engineered to be stronger for lifting larger slabs. This foam will stand up to heavy loads and high traffic, and exceeds specifications required by D.O.T.s. » Contact us for engineering specifications Applications for HMI’s heavy-duty poly foam—RR401: Manufacturing floors Loading docks Highways/Roadways On/Off ramps Bridge approaches Heavy, thick concrete slabs High and heavy traffic areas » Read the RR401-Hwy I-94 case study Interested in learning more about our heavy-duty, D.O.T. / industrial-ready RR401 poly material? Contact Us for More Info Today!