Sonovoid® Round Void Forms
Spiral wound and laminated using Sonoco’s own recycled paper and adhesives for superior strength, Sonotube Void forms are engineered for use with cast-in-place and pre-cast concrete. Interior and exterior surfaces are treated for protection against weather and moisture. Choose from plastic, metal, or wood end closures which can be pre-attached by Sonoco.
Sonotube Void is an economical solution to constructing roof slabs, bridge decks, beams, piers, and pile projects without sacrificing structural integrity or strength.




