BackFill Retainer

BackFill Retainer™ prevents backfill soil from displacing void space that has been formed under grade beams and slab edges. It is made of strong, rigid, white copolymer polypropylene plastic (CPPP), which is impervious to soil and water. Its thin, lightweight design allows for easy handling and storage savings. It is proven to outperform precast blocks, cement backer boards, fiberboard, or lumber. The product is typically installed using one of the placement options below. BackFill Retainer™ is intended to be positioned with the flutes in a vertical position.