PATECO Finger - jointed and laminated wood as applied to structural members refers to materials glued up from smaller pies of wood, with the grain of all laminations essentially parallel to the length of the member. In figure-jointed lumber, pieces of wood are glued together and are interlocked along the joints to produce longer ones. On the other hand, laminated wood is made up of narrow pieces of wood glued edge to edge to make wider ones.


TESTS SHOW THAT PATECO FINGER-JOINTED AND/OR LAMINATED WOOD IS AS STRONG OR EVEN STRONGER THAN SOLID WOOD.

Traditionally, people used solid wood for structural and architectural purposes requiring strength. They believe that solid wood has a better strength properties and can perform better than finger-jointed or laminated wood. However, experiments  & tests show   that finger - jointed / laminated lumber is as strong or can actually be even stronger than solid wood.

In developed countries especially in Europe, people preferred to use finger jointed lumber if the requirements is 7 feet or longer. It is because it is more stable and can stand up against twisting, warping and bending.Irritating natural defects such as wane and knots can be removed and the profile is more stable. All these contribute to the high-grade quality of lumber.


BENDING STRENGTH THAT IS TESTED IN EUROPE


At Pacific Timber Export Corporation (PATECO) we use finger-jointed lumber in construction of door elements and in producing some wood mouldings like baseboard, cornice, T&G, etc.. Its bending strength has been tested in Europe and was conducted by Stitching Hout Research - SHR (Foundation for timber research) instructed by Stitching Keuringsbureau Hout - SKH (Timber Inspection Bureau). The bending strength has been determined by means of four-point bending test. Results showed that the finger jointed lumber split into two but not along the portion where it was jointed. Further, we also use KOMO-certified glue from Europe in our finger jointed lumber, which attributes to its strength property. Thus S4S kiln-dried jointed lumber passed the test and complied with their requirements
 
 


POINTS TO REMEMBER IN USING FINGER-JOINTED LUMBER
Any modification to finger-jointed lumber should be symmetrical in nature.

When finger-jointed laminated lumber as flooring is installed using the other piece of wood (nailer), the wood should also be kiln-dried to avoid swelling and other deformities caused by the unseasoned wood.

Glue should be applied along the nailer or between tongue and groove (T&G) to avoid cupping.
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