Rustic Character with a Story in Every Board
Wormy Chestnut is a feature-grade trade name for a blend of southern-eastern Australian eucalypts — predominantly Eucalyptus obliqua, Eucalyptus sieberi and Eucalyptus fastigata, much of it from Victoria’s East Gippsland region. It is the same timber family sold in cleaner select grade as Australian Chestnut, but here it is chosen specifically to celebrate the marks of a hard life in the forest: deep red gum veins formed by fire, ambrosia-beetle and worm markings, pinholes and squiggly trails. Colours range from blonde and straw browns through to rich chocolate, giving Wormy Chestnut its warm, layered, characterful appearance. With a Janka hardness around 8.0 to 8.1 kN and a density near 800 kg/m³, Wormy Chestnut is a hard, hard-wearing timber that machines and finishes well. Its natural durability is moderate (around Class 3), so it is at its best as internal lining and feature walls, or as external cladding only where it is well protected, coated and maintained. Because its character is the point, Wormy Chestnut is supplied without separating out the natural features — they are exactly what makes it special.
Why Choose Wormy Chestnut Cladding
Technical Specifications
Botanical source
Feature-grade blend of southern eucalypts (E. obliqua, E. sieberi, E. fastigata)
Colour
Blonde and straw browns to rich chocolate, with deep red gum veins
Natural features
Gum veins, worm & ambrosia-beetle marks, pinholes (the defining character)
Natural durability
Approx. Class 3 above ground (best internal or protected/coated external)
Janka hardness
approx. 8.0–8.1 kN
Density (seasoned)
approx. 800 kg/m³
Grain & texture
Straight to slightly interlocked grain; even, coarse-ish texture
Best applications
Internal lining, feature walls, protected/coated external cladding
Where Wormy Chestnut Cladding Performs Best
Internal feature walls and ceiling lining with maximum rustic character.
Cafes, restaurants, bars and retail fit-outs where atmosphere and warmth matter.
Relaxed, contemporary and character-rich residential interiors.
Protected, well-coated and maintained external feature cladding.
Designs pairing feature Wormy Chestnut with calmer select-grade surfaces.
Feature joinery and trim that complements the cladding.
Wormy Chestnut Cladding Profiles & Grades
Wormy Chestnut cladding can be supplied in a choice of popular profiles to suit the look you are after — from crisp shiplap and tongue-and-groove boards that create clean, contemporary shadowlines, through splayed weatherboard and board-on-board profiles for a more traditional feel, to square-edge and channel profiles for a modern, linear aesthetic. Cover width has a big impact on the finished look: narrower boards read as fine and detailed, while wider boards give a bolder, more streamlined facade. Our team can talk through the options and help you choose the profile and width that best suit your design and budget. Grade is the other key choice. Cleaner, lower-feature grades give a calm, uniform appearance, while character or feature grades showcase the natural colour variation, grain and markings that make Wormy Chestnut distinctive. Because timber is a natural product, every board is unique, so we recommend reviewing a current sample or batch before committing to a large order. Tell us the profile, width and grade you are leaning towards and we will confirm what is available and provide samples where possible.
Get Your Free QuoteWorking With and Maintaining Wormy Chestnut
Wormy Chestnut machines and fixes readily with standard hardwood practice; pre-drill near board ends and use quality fixings. For internal lining, fix to battens or a suitable framework and finish with a quality clear or tinted interior coating, which both protects the surface and deepens the natural markings and gum-vein colour beautifully. Because its natural durability is moderate (around Class 3), Wormy Chestnut is best used internally or in well-protected external locations. Where used outside, it must be fully coated on all faces and edges, detailed to shed water, kept off the ground and maintained with periodic recoating; always seal cut ends. For fully exposed cladding, choose a Class 1 or Class 2 species instead.
Get Your Free QuoteSustainable & Ethically Sourced
JVS Timber sources Wormy Chestnut from certified producers and supplies product compliant with Australian industry standards. As a renewable native eucalypt blend — and one that turns the natural marks of fire, drought and insects into a design feature — it is a characterful, responsible choice for interiors. It is also a popular recycled timber. Specifying it for the right application ensures it achieves its full service life. FSC-certified options may be available on request.
Get Your Free QuoteWormy Chestnut Sizes & Availability
JVS Timber supplies Wormy Chestnut cladding and lining in a choice of profiles and feature grades, in a range of cover widths and lengths. Whether you need a feature-wall quantity or a larger lining package, our team can confirm current stock, profiles, sizes and competitive trade pricing, delivered Australia-wide. Tell us the look and application you are after and we will recommend the right grade and finish.
Get Your Free QuoteWormy Chestnut Cladding — Frequently Asked Questions
Wormy Chestnut comes from trees marked by fire, drought and insects. Its deep red gum veins (formed by fire), squiggly worm trails, pinholes and ambrosia-beetle marks are natural features, deliberately celebrated in this feature-grade timber rather than graded out.