Effect of Coatings on the Durability of Birch and Spruce Plywood. Part 2: Biological Durability

IRG/WP 10-40527

A Nurmi, H Viitanen

Several different coated birch and spruce plywood types were investigated in Finland using the combination of outdoor weathering and decay test EN 12038. The most important factor to affect on the biological performance of birch plywood, coated and uncoated, was edge sealing. For spruce plywood edge sealing had a smaller effect. However, in spite of positive effect against decay, edge sealing did not prevent wetting during the decay test. One year outdoor weathering did not have a significant effect on painted plywood when compared to samples stored in the laboratory.

Keywords: coatings, plywood, weathering, decay, edge sealing

Conference: 10-05-09/13 Biarritz, France

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