EPA Expresses Health Concerns About Spray Polyurethane Foam

A-1 Concrete Leveling uses a limestone slurry when pressure injecting to raise sunken concrete slabs. When new concrete is poured one of the primary sub-base elements is 1-point limestone. Logic says that using an all-natural material like limestone that is not being manipulated by chemical companies is safer overall for our health and the environment. Apparently the EPA agrees! Read about the EPA's concerns here.