
TEAK (Tectona Grandis)
General
Teak is one of the most valuable timbers, "the King
of Hardwoods", in ancient times considered as "a royal timber". Teak is world
wide recognized for its durability and stability, The timber is immensely
stable, has a high oil content that works as "built-in" natural water
repellent and is therefore virtually immune to rotting, fungi and harsh
chemicals. Teak is one of the few timbers that can withstand the heat of the
desert and will not readily catch fire.
Untreated teak can be left in the open for more than 30
years whilst becoming an attractive soft silver color. Teak is one of the
timbers not susceptible for termite (white ants) attacks.
Teak will not turn black when in contact with metals.
Appearance
Teak has a great beauty. It is generally fine to coarsely
grained, even texture, medium luster and an oily feel. Yellow brown to
dark golden brown heartwood and grayish or white sapwood.
Physical properties
Teak has a high degree of natural durability, is
moderately hard and heavy with low stiffness and shock resistance but an
excellent decay resistance and dimensional stability with a good acid
resistance.
Use
Exterior and interior doors, parquet, indoor and outdoor
furniture, ship decks.
Indonesia exports mainly two type of teak timbers,
Bojonegoro teak from the Mid and Mid-East of the island of Java and
Banyuwangi teak from the East of Java. Bojonegoro teak is considered one of
the highest quality teaks available in the world. It has an unparalleled
beauty, warm color and a coarse even structure. Banuywangi teak is somewhat
lower in quality, not as warm in color as Bojonegoro teak. It has few small
white calcium spots. Banyuwangi is less durable against white ants attack.
The following Teaks are available (from
top ranking to bottom ranking):