Marine plywood Manufactured to AS/NZS 2272
Plywood – Marine is a purpose built structural plywood, intended for use in hulls of boats and other marine applications and also in aircraft construction. It has a permanent Type A Phenolic bond and is manufactured from selected species based on density, bending strength, impact resistance and surface finishing characteristics.
None of the marine species are naturally durable and preservative treatment of marine plywood used in some marine environments.
Preservative treatment of marine plywood can be either carried out in a treatment plant prior to sale or in situ. In either situation the protection is an envelope treatment and all cut edges should be re-treated in situ.
As most preservation affect resorcinol bonding, advice should be sought from adhesive and preservative manufactured if gluing of preservative treated plywood is intended.
Marine plywood to AS/NZS 2272 is made from selected species and therefore has known and consistent structural properties. The assigned stress grade of plywood manufactured to AS/NZS 2272 is F14.
Marine plywood to AS/NZS 2272 has two A grade faces and a Type A bond. In the Australian / New Zealand Standards grading system it therefore has a grading of AA-A bond.
Note that marine plywood manufactured to BS 1088, as imported into Australia, does not have predictable structural performance and must not be substituted for AS/NZS 2272 marine plywood. For assured performance marine plywood should be branded with the ‘EWPAA Tested’ marine plywood stamp.
“If your project does not have a motor or a sail you don’t need marine ply”