Home / Wood Compare / Norway Spruce vs Kail Blue Pine
Professional Comparison · Verified Engineering Data · Updated 19 July 2026
Norway Spruce VS Kail Blue Pine
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.
🥇
Norway Spruce
6/100 Library Score
🌲Softwood
- Leads on stiffness, lightness, machining ease — a narrow but consistent edge
🥈
Kail Blue Pine
4/100 Library Score
🌲Softwood
- Close second across most categories
- Solid choice where its profile fits the project
Visual comparison
Norway SpruceKail Blue Pine
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) | Kail Blue Pine |
| Stiffness (MOE) | Norway Spruce |
| Flame spread | Tie |
| Machining ease | Norway Spruce |
| Lightness | Norway Spruce |
Engineering data
| Property | Norway Spruce | Kail Blue Pine |
|---|---|---|
| Janka Hardness | 380WD lbf | 460 lbf |
| Density | 0.43WD g/cm³ | 0.45 g/cm³ |
| MOE | 9.7WD GPa | 8.6 GPa |
| MOR | 63.0WD MPa | 64.0 MPa |
| Durability | Class 4 Slightly Durable | Class 4 Slightly Durable |
| Stability | Moderate | Moderate |
| Fire (E84) | Class C indicative | Class C indicative |
| Radial Shrink | 3.9WD % | 2.5 % |
| Tangential Shrink | 8.2WD % | 5.2 % |
| T/R Ratio | 2.1 | 2.08 |
Figures carry the same source status as the species pages they come from — verified where cited, indicative where marked.
Best for
| Application | Recommended | Suitability |
|---|---|---|
| Flooring / wear surfaces | 🥇 Kail Blue Pine | ★☆☆☆☆ |
| Furniture / interior joinery | 🥇 Norway Spruce | ★★★★☆ |
| Structural / load-bearing | 🥇 Norway Spruce | ★☆☆☆☆ |
Advantages & limitations
Norway Spruce
Advantages
- Easy to machine, glue and fasten
- Lightweight — easy handling and installation
Limitations
- Not durable outdoors untreated (Class 4)
- Noticeable seasonal movement — allow for it in design
- Soft surface — dents under point loads
Kail Blue Pine
Advantages
- Easy to machine, glue and fasten
- Lightweight — easy handling and installation
Limitations
- Not durable outdoors untreated (Class 4)
- Noticeable seasonal movement — allow for it in design
- Soft surface — dents under point loads
Recommendation
Choose Norway Spruce if…
- You want the stronger all-round engineering profile
Choose Kail Blue Pine if…
- Its profile matches the application better than a single overall score
Frequently asked questions
Which is more durable, Norway Spruce or Kail Blue Pine?
Neither — both carry the same EN 350 rating (Class 4, Slightly 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 Norway Spruce harder than Kail Blue Pine?
No — Kail Blue Pine is harder (Janka 460 vs 380 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.