Walnut is a tough, hard timber of medium density, with moderate bending and crushing strengths and low stiffness. The sapwood of walnut is creamy white, while the heartwood is light brown to dark chocolate brown, occasionally with a purplish cast and darker streaks. Walnut is usually supplied steamed, which darkens the sapwood, but a very unique look can also be achieved by leaving it natural. The wood is generally straight grained, but sometimes with wavy or curly grain that produces an attractive and decorative figure. The dark heartwood will lighten in colour as it ages overtime with exposure to UV light. 

Properties: Walnut is tough, hard timber of medium density, with moderate bending and crushing strengths and low stiffness. It works easily with hand and machine tools, and nails, screws and glues well. It holds paints and stains well and can be polished to an exceptional finish. It performs best when dried slowly, reducing the opportunity for degrade. Walnut has good dimensional stability.

Durability: Rated as very resistant to heartwood decay, it is one of the most durable woods even under conditions. 

Botanical Name: Juglans nigra L

Other Names: Black Walnut

Origin: North America

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ITI NZ, formerly known as ITI Timspec, began as Timspec, a specialist timber wholesaler committed to providing quality timber products with reliable service, value, visuals and versatility. In March 2019, Timspec Ltd was acquired by ITI NZ Ltd, becoming ITI Timspec, before later rebranding to ITI NZ Ltd.

As part of the wider ITI Group, ITI NZ continues to grow its product range and service offering across New Zealand. The acquisitions of Rosenfeld Kidson and Hermpac have further strengthened the business by adding respected industry knowledge, trusted timber brands and a wider range of premium timber solutions.

These acquisitions have also helped expand our offering across cladding, cedar products, flashings, external corners and related timber accessories, allowing us to support architects, builders and merchants with a more complete solution.

ITI NZ sources timber from trusted mills and suppliers around the world and works hard to provide quality products, reliable service and strong relationships across the building industry.

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