How do I prevent a folding table top from warping?

Warping is most common on particleboard-core laminate tables exposed to moisture. Prevention: store tables vertically on a cart with the tops protected from humidity, do not leave tables outdoors or in damp basements, avoid hosing down laminate tops with water, and use a table cover for spill-prone environments. Solid-core or blow-mold tops are far more warp-resistant. If a laminate top is already warped, it cannot be straightened effectively. OfficeFurniture2go.com — call 1-800-460-0858.