Decay Resistance of Plywood Bonded with Various Glues

The decay resistance of sweetgum and yellow birch plywood bonded with various glues were evaluated by the time it took wood-destroying fungi to penetrate the plywood, and by the loss in weight of the plywood when exposed to fungi in soil-burial tests. Several cold- and hot-pressed resin adhesives as well as casein glue with and without preservatives were tested. None gave complete protection to the plywood.

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