Adhesives are used with wood for the following main applications:

  • laminating or surface gluing: used, for example, for wood veneer or plastic laminate; not so often found in external situations, except for non-slip strips used on steps;
  • frame assembly: joints with glue lines, which provide close contact between surfaces; conventional, machine-made, glued wood joints are close contact;
  • loose fitting or open joints: may require gap filling owing to uneven surfaces; and
  • structural joints: critical to a structure, they need to have good “creep” resistance (i.e. the ability to resist distortion over a period of time).

Adhesives tend to be stronger than many lower-density lumbers, (e.g. below the density of beech, which is 40–50 lbs/ft ...

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