Home / Wood Compare / Massaranduba vs Cumaru
Professional Comparison · Verified Engineering Data · Updated 19 July 2026
Massaranduba VS Cumaru
Which wood is better for your project? Scores are computed from the verified figures on each species page — how we score.
Verdict: near-tie. The right choice depends on the application — see winner by category below.
🥇
Massaranduba
99/100 Library Score
🪵Hardwood🌧Outdoor🔥Low Flame Spread💧Moisture Stable
- Leads on lightness, bending strength, machining ease — a narrow but consistent edge
🥈
Cumaru
98/100 Library Score
🪵Hardwood🌧Outdoor🔥Low Flame Spread💧Moisture Stable
- Close second across most categories
- Solid choice where its profile fits the project
Visual comparison
MassarandubaCumaru
Winner by category
There isn't one universally best wood — there's a best wood for each purpose.
| Category | Winner |
|---|---|
| Durability | Tie |
| Stability | Tie |
| Hardness | Tie |
| Strength (MOR) | Massaranduba |
| Stiffness (MOE) | Tie |
| Flame spread | Tie |
| Machining ease | Tie |
| Lightness | Massaranduba |
Engineering data
| Property | Massaranduba | Cumaru |
|---|---|---|
| Janka Hardness | 3130WD lbf | 3330WD lbf |
| Density | 0.85WD g/cm³ | 0.87WD g/cm³ |
| MOE | 23.0WD GPa | 22.33WD GPa |
| MOR | 192.2WD MPa | 175.1WD MPa |
| Durability | Class 1 Very Durable | Class 1 Very Durable |
| Stability | Excellent | Excellent |
| Fire (E84) | Class A indicative | Class A indicative |
| Radial Shrink | 6.7WD % | 5.3WD % |
| Tangential Shrink | 9.4WD % | 7.7WD % |
| T/R Ratio | 1.4 | 1.45 |
Figures carry the same source status as the species pages they come from — verified where cited, indicative where marked.
Best for
| Application | Recommended | Suitability |
|---|---|---|
| Outdoor decking / pergola | 🥇 Massaranduba | ★★★★★ |
| Exterior cladding | 🥇 Massaranduba | ★★★★☆ |
| Flooring / wear surfaces | 🥇 Cumaru | ★★★★★ |
| Furniture / interior joinery | 🥇 Massaranduba | ★★☆☆☆ |
| Structural / load-bearing | 🥇 Massaranduba | ★★★★★ |
Advantages & limitations
Massaranduba
Advantages
- Rated for exterior exposure (EN 350 Class 1)
- Very low movement in service
- Hard wear surface, dent-resistant
- Best flame-spread class (E84 Class A, indicative)
Limitations
- Hard on tooling; pre-drilling recommended
- Heavy — consider structure and handling
Cumaru
Advantages
- Rated for exterior exposure (EN 350 Class 1)
- Very low movement in service
- Hard wear surface, dent-resistant
- Best flame-spread class (E84 Class A, indicative)
Limitations
- Hard on tooling; pre-drilling recommended
- Heavy — consider structure and handling
Recommendation
Choose Massaranduba if…
- You want the stronger all-round engineering profile
Choose Cumaru if…
- Its profile matches the application better than a single overall score
Frequently asked questions
Which is more durable, Massaranduba or Cumaru?
Neither — both carry the same EN 350 rating (Class 1, Very Durable). For outdoor decisions between them, weigh dimensional stability and hardness instead.
Which wood is better for outdoor use?
They are closely matched outdoors — durability and stability come out almost level. Let the application decide: harder surface for decking traffic, lighter weight for cladding.
Is Massaranduba harder than Cumaru?
No — Cumaru is harder (Janka 3330 vs 3130 lbf).
How we score. Each wood gets a weighted composite of the verified figures shown above: durability 22%, stability 18%, hardness 12%, bending strength 12%, machining ease 12%, stiffness 8%, flame spread 8%, lightness 8%. The Library Score is that composite's percentile rank within our 60-species library — 50 means the library median, 90 means it outperforms nine of every ten species we cover. No price data is scored — cost guidance is qualitative. The score summarises the data; it does not replace judgement about your specific application.