Our recycled hardwood

Every single wood enthusiast can get certified 100% recycled Ulin ironwood from NaturanexA.

To secure a fully legal wood supply that is available for both local sale and export, we are carefully reclaiming from abandoned constructions and work closely with the Forest Ministry.

NaturanexA ensures that no wood enthusiast is left behind with incredibly reasonable pricing, from modest home projects to hotels and nationwide wholesalers.

Ulin from Kalimantan is our area of expertise!

Our specialty at Naturanexa is recovering ironwood from Indonesia's Kalimantan region and transform them in building components.

Building materials including doors, windows, fence, pergola, handrail, trellis and others that can all benefit from the strength and sustainability of ironwood.
We obtain all of our wood from legitimate, reputable sources, and we use it to create high-quality, aesthetically pleasing, long-lasting building components.

Visit our products categories for more information or get in touch with us right away for a free consultation.

Details about Ulin

The wood Ulin is extraordinary. Less than 0.5mm of growth per year resulting in a wood that is incredibly thick and perfect for exterior applications. A uncommon tree native to Indonesia is called ulin. Loss of habitat is a hazard to it.

The export of this species has been declared outlawed by the governments of Indonesia and Sarawak. Smuggling in illegal goods is a serious issue. Up to a height of 625 meters, it thrives in lowland primary and secondary forests. It frequently grows along slopes and around rivers. It needs 2500–4000 mm of rainfall on average every year.

One of the strongest and heaviest timbers in the world comes from this very significant tree. Ulin trees can live for more than a thousand years. Commonly exploitable trees for commercial use can reach heights of 30 meters or over (100 feet), and their trunk diameters can reach 92 cm (36 inches).

Trade & local names: Borneo ironwood, billion, belian, biliran, Kalimantan ironwood

Found in: Indonesia, East Malaysia, Philippines

Qualities: Growth ring borders that are unclear or nonexistent. Heartwood is predominantly streak-free brown to yellow. Heartwood and sapwood have different colors. Lemony odor is barely detectable. Fresh heartwood has yellowish to green (olive) tones; after exposure, it turns dark brown to nearly black.

Density: 0.85–1.1 g/cm³

Durability: Class 1

Uses: Heavy construction, ironwood decking. The wood is highly desired for many outdoor uses due to its great resistance to bacterial, fungal, insect, and marine borer damage. It is well-known internationally for its robust construction, such as a barrier between large steel fabrications (such boilers, pressure vessels, reactors, and many others) and trailers used for transportation. In dry docks, it is widely used as a wood to separate the ship hull from the steel supporting stands. Can be applied on unfinished flooring.

Status: According to the IUCN (World Conservation Union), this area is fragile. Overexploitation of the species, primarily by illegal loggers, puts it in danger. because to its reputation among Chinese people as a coffin wood (because to its resistance to rot and insects), the timber is currently in high demand. Listed as one of the Philippines' disappearing timber species, and Sabah considers it to be virtually extinct. It only exists in National Parks in Java and Sumatra. The current state of affairs is considered a serious depletion of stands.

Teak, a partner product.

One of our reliable partners is an expert at recovering teak from Java. All of their wood is sourced legally and is mostly used to create wall paneling, flooring, and decking.

Please get in touch with us if you need further details.

Details about teak

In mixed hardwood forests, teak is a sizable, deciduous tree that predominates. It has papery leaves that are frequently hairy on the underside and tiny, fragrant white blooms. Teak wood is highly prized for its tensile strength and water resistance. Tamil "tekku" and Malayalam "thekku" are the origins of the word teak. It then transitioned to Portuguese "teca."Tectona grandis can be found in a wide range of habitats and climatic settings, from desert regions with barely 500 mm of annual precipitation to extremely moist forests with up to 5,000 mm.

Teak has been used to construct boats for more than 2000 years. Teak is not only relatively strong, but it also has a high level of rot, fungus, and mildew resistance. Additionally, teak is a great choice for applications where it experiences cyclical fluctuations in moisture because of its relatively low shrinkage ratio. Teak is unique in that it is both a great structural timber for framing, planking, etc. and is also simple to work.

Trade & local names: Jati, tiki, Burmese Teak

Found in: Indonesia, India, Pakistan, Sri Lanka, Burma, Thailand, Laos, Vietnam, Cambodia, and tropical Africa

Qualities: Heartwood is thin and a deep yellow-golden color, while sapwood is light yellow-brown. Growth ring limits and smell are distinct. Teak is beneficial in exposed locations and is termite and insect resistant thanks to its natural oils. Teak is resilient even without an oil or varnish finish. Because of its strong tensile strength, tight grain, and high oil content, teak is ideally suited for outdoor application. Teak can eventually develop a silvery-grey finish, particularly when exposed to sunshine.

Uses: construction of boats, decking, joinery of all kinds, framing, and flooring. The wood will naturally age to a lovely silver-grey if no finish is applied, which is an alternative. A finishing product like linseed or tung oil may also be applied to the wood. As a result, the finish is pleasing but relatively unremarkable. Finally, varnish can be applied to teak to give it a rich, lustrous sheen.

Density: 0.44–0.63–0.82 g/cm³

Durability: Class 2

Status: Finding teak forests that are older is challenging. The only nation still exporting teak from virgin forests is Burma. Indonesia is the second-largest producer of teak in the world and has built teak plantations that were first introduced by the Dutch.