Bangkirai: The Best Wood for the Terrace?
Those looking for the best wood for their terrace will surely come across Bangkirai, often called Bankirai, in the hardware store. Is it really best for terraces or is it just marketing? Learn the answer in this article.
Because of its properties, Bangkirai (botanical name: Shorea laevis) is excellently suited for outdoor use. That's why it's the most popular hardwood for terraces. Bangkirai comes from a Southeast Asian deciduous tree, which is very hard and resistant. Due to the immense popularity of the trees are now grown internationally. The deciduous tree reaches a growth height of up to 50 meters with a maximum diameter of one and a half meters. The special feature is that its natural ingredients protect Bangkirai from rot.
The characteristics of Bangkirai wood at a glance:
- particularly robust and durable even with direct earth contact
- heavier than native wood ( about 1,000 kg per cubic meter)
- high strength
- good processing options, usable for earthworks and hydraulic engineering
- resistant to insect and fungal attack
- long life expectancy of up to 25 years
Special properties and surface
As a particularly resistant wood , Bangkirai is well protected against weather conditions. Therefore, this type of wood is advertised in the hardware store especially for use as decking or fence. Bangkirai has good durability even under tropical conditions and with very high humidity. Due to the pronounced alternating rotation, however, you must machine the wood using machine tools. Even for screw connections, pre-drilling is required.
Basically, a reddish-brown color is found which can discolor under direct UV radiation. Therefore, this product, like any other wood species, must be treated regularly with oil. Transport-related discoloration can be treated afterwards with a brush. Pigment spots can be removed with oils, but one can do nothing against certain color differences, ranging from dark brown to light brown, as they are an optical property of this wood.
Installation for the wooden terrace
Bangkirai is just like any other hardwood well self-routing . As mentioned previously, the wood must be pre-drilled, otherwise the stainless steel screws could tear off. The surface should be stable and also made of hardwood. With a slight drop of about one centimeter per meter, they can provide faster water drainage. Between the planks we recommend to leave about three millimeters, as the wood has to work over the years. In summer, it contracts with heat and in winter it expands again.
- Resin galls, narrow slits filled with white crystals, rarely occur.
- In order to prevent fine cracking during storage, the Headers often painted with wax. The boards must therefore be cut during assembly.
- Weathering may cause slight cracks in the surface, but they do not have a static effect.
- Bangkirai, like any other wood species, will turn gray. The original color can be preserved with regular oil care.
- Galvanized metals react with the ingredients of this wood. Stainless steel screws can avoid this effect.
- The so-called bleeding, which releases ingredients, can occur when the Bangkirai is used outdoors. You can protect surrounding materials with foils
- Not infrequently, small black dots can be found. These are wormholes (fresh wood pests) that can survive at a high wood moisture content of over 40 percent. He dies as soon as the tree is felled. The pests have no influence on the quality of the wood.
Alternatives and Conclusion
Now we come to the all-important question: is Bangkirai wood the best product for a terrace? First of all, one has to question critically whether the use of tropical woods makes any sense at all. Important for you as a buyer is that it comes from a sustainable cultivation. A real guarantee does not exist here, even if numerous seals should prove the sustainability. Not infrequently, the quality seals are forged. Even wholesalers often have problems distinguishing the types of wood, as can be seen from this article. An alternative to Bangkirai would be domestic woods such as Douglas fir or Larch.
If we consider Bangkirai outside these criteria, it is the best wood for a terrace in terms of properties, processing and laying, provided you find genuine and high quality Bangkirai wood. We recommend that you consult Bangkirai products with several specialist retailers and get detailed advice. The trader of his trust should also be able to select high quality wood species that have no optical defects.
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