Face veneers for high-grade plywood have solid wood surfaces free from knots and defects. These plywood panels are used where a high quality finish is required or where the surface appearance is very important. For less strenuous requirements the use of a patching compound to cover and seal open defects has become accepted in the international market place. Certification agencies evaluate plywood panel quality and durability and offer consumer assurance that the panel will perform satisfactorily over an extended period. With evolution of the plywood industry and their suppliers, new patching materials and methods have come into use. The long-term performance of plywood patches made with these new materials and methods may affect the long-term durability of the plywood panel. Currently available literature was reviewed to determine if current plywood industry patch test methods are adequate to meet consumer needs.