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Gluing of treated wood

This section discusses the considerations for gluing of treated wood.

The most important factor is that the wood surface is clean and dry before gluing. In general water-based adhesives are more tolerant of any surface moisture.

Suitable adhesives for timber are included in NZS 7202:1986 Parts 1 and 2

It is always a requirement for the carrier solvent, whether water or a hydrocarbon solvent, to be allowed to evaporate (flash off) before gluing is attempted. Resorcinol, phenol/resorcinol and phenol/formaldehyde adhesives are used with LOSP treated timber.

Provided the timber has dried and the timber surfaces are clean of dust, adhesives can be used on untreated and preservative treated timber, although copper-based preservatives, particularly high retentions of CCA, can adversely affect the glue bond quality.

Gluing of interior lining panels to timber framing can present some unique problems. Rubber based adhesives are suitable and recommended by some suppliers for gluing plaster board to timber framing regardless of the preservative type.