Introduced by Weld-Crete is this original chemical concrete bonding agent. This concrete leveling agent incorporates polyvinyl acetate homopolymer in a patented formulation. Designed for exterior and interior use, this concrete crack fill is highly reliable. The Weld-Crete concrete welding bonding agent can be painted on a single application 1 to 10 days before concrete placement. Use this bonding agent with the strength of weld to bond new concrete to an existing concrete floor. This welding on concrete bonding agent is ideal on concrete, portland cement plaster, and cement floors.