Handling & safety. Shorea dust has been reported to irritate eyes, throat and skin. Extract when machining.
Properties
| Latin name | Shorea spp. |
|---|---|
| Species type | Hardwood |
| Origin | Southeast Asia. Dark red meranti is a trade group, sometimes called red lauan. |
| Density | 675 kg/m³ |
| Janka hardness | 3,570 N |
| Modulus of rupture | 87.7 MPa |
| Elastic modulus | 12.02 GPa |
| Crushing strength | 48.8 MPa |
| Specific gravity | 0.68 |
| Porosity | Diffuse-porous |
| Movement class | Very low |
| Tangential shrinkage | 7.8% |
| Radial shrinkage | 3.9% |
| Volumetric shrinkage | 12.5% |
| T/R ratio | 2 |
| Durability (EN 350) | Class 4 |
| Relative cost | Budget |
Density and mechanical properties are typical values at around 12% moisture content. Shrinkage figures represent total dimensional change from fibre saturation to oven dry. Individual boards vary.
Meranti, Dark Red — the general-purpose tropical hardwood
Dark red meranti is one of those timbers that does an enormous amount of work without anyone particularly noticing it. It’s the timber in a lot of door and window stock, a lot of cladding, a lot of interior joinery — a light-to-medium South-East Asian hardwood, warm reddish-brown in colour, reasonably easy to work, and affordable for a tropical timber. It isn’t glamorous and it isn’t meant to be. It’s useful.
It’s also a group rather than a single species: “meranti” covers a number of Shorea species, and dark red meranti is a subgroup within them. So the timber you get can vary in density and colour from one delivery to the next. It’s sometimes referred to as red lauan, and its family resemblance to mahogany means it gets sold as a mahogany substitute — which is where people go wrong. It looks a bit like mahogany. It isn’t mahogany, and it doesn’t behave like it.
What it’s like to work
Generally easy. It works with both hand and machine tools, and it’s much more forgiving than the dense tropical hardwoods like balau or ipe. Two things to expect: interlocked grain can cause problems during planing, so watch your direction and take lighter passes; and it has very poor steam-bending properties, so it isn’t the timber for a bent or curved component. It glues, stains and finishes fine.
Meranti is in the Shorea genus and has been reported to cause eye, throat and skin irritation — the same warning as balau. Worth a mask and extraction if you’re working much of it.
Where it earns its place
Interior joinery and door and window stock, where its workability and price make it a sensible choice. Cladding where it’s properly finished and detailed. General construction and concrete formwork, where its cheapness and reliability suit it. Furniture, plywood, and boatbuilding in non-structural roles.
The exterior caution
Meranti is often sold for cladding and external joinery, and many meranti cladding jobs perform fine — because they’re finished and detailed to keep water off. But its insect and decay resistance is genuinely modest, and it shouldn’t be treated as an outdoor timber in the way oak or cedar are. Exposed, unprotected and insect-accessible, it won’t last. If you’re using it outside, treat it as a timber that needs a finish and a design that sheds water.
On sustainability — worth asking about
Meranti sits in the Shorea genus, and many Shorea species are on the IUCN Red List, with the majority listed as critically endangered due to habitat loss and logging pressure. That’s a serious conservation position for a genus that supplies a lot of affordable tropical timber. If you’re buying meranti, asking about FSC or PEFC certified supply is a reasonable and relevant question.
Where it costs you
Not much in money — it’s one of the more affordable tropical hardwoods, and that’s the point of it. What it costs you is knowing its limits: it isn’t mahogany, it isn’t durable outdoors, it doesn’t steam-bend, and the dust irritates. Used within those limits, it’s a good value timber.
Buying note. Ask which Shorea you’re getting if the supplier knows — “meranti” is a group, and density and colour vary within it. Ask about FSC or PEFC availability given the IUCN position. For exterior work, ask whether they’d recommend it for the exposure, and specify a finish. If the job has any curved component, choose something with better steam-bending behaviour.
Working the timber
Usually easy to work. Interlocked grain can tear when planing, and steam-bending is poor. Typical figures from The Wood Database. TRADA rates dark red meranti as slightly durable to durable, EN 350 class 2–4 depending on the batch, so it is stored as 4; it is susceptible to insect attack.
Finishing & gluing
Stains and finishes well. It is not true mahogany.
Glues well on a clean face.
