HARDWOOD DOORS
General
The wood that is used for
our hardwood doors is obtained from sustainable plantations all over Indonesia that are
monitored by the Indonesian Government.
We mainly produce doors
in new Djati Teak, old Djati Teak, Merbau, Bangkirai and Rain tree wood (a Mahogany
resembling wood).
The wood used for our
doors is kiln dried (except old Teak) to a maximum moisture content of 12%. During the
course of fabrication and shipment to destination the moisture content may rise until some
20% (wood is a cellulose material and behaves like a sponge, re-absorbing water from the
atmosphere). An MC of 25% is still very acceptable for doors.
In termite (white ant)
invested places we advise the use of either Teak wood or Bangkirai as both of the wood
species are not susceptible to termite attacks (100% safe). The life time in the open for
untreated wood (no varnish, lacquer, paint or polishing) in the open is as follows:
Teak wood: 30 to 35 years
Merbau: 20 to 25 years
Bangkria: 25 to 30 years
Raintree wood: 10 to 15 years
We supply doors with
thicknesses ranging from 35 mm to 50 mm. The door panels are constructed as
"floating" as to allow for expansion and contraction between the door rails and
door stiles. The connection between the rails and stile are made following the tongue and
groove method and glued together with epoxy (no dowels are used).
NEW TEAK WOOD
General
Teak is one of the most
valuable timbers, "the king under the timbers", in ancient times considered as
"a royal timber". Teak is world wide recognized for its durability and
stability, The timber is immense 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 to 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.
We produce doors from
mainly two type of teak timbers; Bojonegoro teak from the Mid and Mid-East of the island
of Java and Banuywangi 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.
OLD TEAK WOOD
The old teak wood that we
use is obtained from the dismantling and knocking down of old colonial buildings from East
Java. The wood is over 100 years old and is dried by natural process (ranging from 15% to
20% MC). The wood has a beautiful warm color and a remarkable grain structure. Most of the
teak wood came from the Bojonegoro area.
Physical properties are
similar to new Teak wood (see above).
MERBAU (Intsia
Bijuga)
General
Merbau is widely used due
to its beautiful look and excellent physical characteristics, such as hardness, durability
and moisture resistance. It is a very hard material and resists deformation. It can easily
withstand any weather changes and is therefore very useful for exterior doors. Merbau used
for exteriors doors is normally from Class III to IV.
Untreated Merbau can be
left in the open for more than 20 years. Merbau is only susceptible for termite (white
ants) attacks when is is classified in Class II. Merbau endurance against fungus is Class
I
Merbau will stain black
when in contact with metals.
Appearance
The wood texture is
evenly coarse. The grain is straight or occasionally slightly interlocked. The wood
surface is smooth and glossy. The heartwood is brown-gray, brown-yellow, brown-red or
black.
Physical properties
Merbau has a high degree
of natural durability, is very hard and performs well in heavy traffic areas.
Use
Exterior and interior
doors, parquet, furniture, paneling.
BANGKIRA, or BELAU
(Shorea Laevis)
General
Bangkirai (or sometimes
named Balau) is a highly rated timber that is frequently used for trusses and structural
wood members in areas where termites habitat. Bangkirai is not susceptible to the attacks
of the ants.
Untreated Bangkirai can
be left in the open for more than 25 years.
Appearance
The wood texture of
Bangkirai ranges from fine to rather coarse. The grain is straight or interlocked.
The wood surface is smooth or alternately smooth and rough owing to the interlocked grain.
Wood surface is glossy. Yellowish heartwood and yellowish pale light brown sapwood.
Physical properties
Bangkirai has a high
strength and durability, is hard and heavy with high stiffness and shock resistance.
Excellent decay resistance and dimensional stability.
Use
Exterior and interior
doors, roof structures, construction members, railway sleepers, electric poles, parquet
RAIN TREE WOOD
(Pithecellobium Saman)
General
Rain tree wood is used by
us since early 2000 as a substitute for Mahogany. At that time Mahogany became a wood
species that was difficult to obtain due to the fact that a Government controlled factory
in Indonesia claimed the timber from all the sustainable Mahogany plantations for the
production of office furniture. Since then raw Mahogany prices for the commercial use for
doors increased dramatically. Prices were not longer economical. Rain tree wood (locally
called Suar wood), or sometimes Monkey Pod, is a wood species that resembles Mahogany in
structure grain and color, but is better workable when still green. The timber is more
stable than Mahogany. Unfortunately Rain tree wood is not fully safe to dry wood termite
attacks. Untreated Rain tree wood may last for some 15 years in the open.
Appearance
Interlocked or straight
grain, often with a ribbon figure and a moderately coarse texture. Creamy white sapwood
and reddish brown hearthwood, often with a purple cast. Rain tree wood shows figures which
include stripe, roe, curly, blister, fiddleback and mottle.
Physical properties
Very stable hardwood.
Moderately heavy but very strong and durable in decay resistance and moderately resistant
to dry-wood termites. Low stiffness and shock resistance. Rain tree wood is favoured by
many people due to its capability not to crack when it is brought to dryer climates.
Use
Interior doors,
cabinetry, indoor furniture, boat building, paneling, veneers.
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