Knowledge base
Species Library.
Source of truth.
Mechanical and botanical data for commercial timber species — properties, workability, movement, durability, and buying notes.
76
Species documented
with profile data
52
Hardwoods
European & global
24
Softwoods
commercial species
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5 species matching "Spruce"
White Spruce
Picea glauca
Softwood
Density
450 kg/m³
Durability
Class 5
T/R Ratio
1.9
Norway Spruce
Picea abies
Softwood
Density
405 kg/m³
Durability
Class 4
T/R Ratio
2.1
Sitka Spruce
Picea sitchensis
Softwood
Density
425 kg/m³
Durability
Class 4
T/R Ratio
1.7
SPF (Spruce-Pine-Fir)
Picea spp. / Pinus spp. / Abies spp. (mixed)
Softwood
Density
430 kg/m³
Durability
Class 5
T/R Ratio
2.0
English Elm
Ulmus procera
Hardwood
Density
565 kg/m³
Durability
Class 5
T/R Ratio
1.4
Related tool
Wood Movement Planner
Use species movement data in the calculator — pick a species and get movement estimates for board width and moisture ranges.