Field data
  • Janka hardness 600 lbfred oak ≈ 1,290 lbf
  • Density ≈ 29 lb/ft³specific gravity 0.41 at 12% MC
  • Shrinkage — tangential 6.3%flatsawn width, green → ovendry
  • Shrinkage — radial 4.2%quartersawn width
  • T/R ratio 1.5 : 1higher = more cupping in flatsawn stock

Shop notes Actually a mahogany relative — the humidor and guitar-neck wood. Aromatic, stable, easy to work; resin can bleed in hot sun.

Seasonal movement at a glance

Width change for spanish cedar across a typical indoor year — 6% moisture content in the heated winter to 12% in a humid summer:

Board widthFlatsawnQuartersawn
6″ 3/32″ (0.081″) 1/16″ (0.054″)
12″ 5/32″ (0.162″) 3/32″ (0.108″)
24″ 5/16″ (0.324″) 7/32″ (0.216″)
36″ 1/2″ (0.486″) 5/16″ (0.324″)

Run your own numbers

Different width, different climate swing — the calculator below is preset to spanish cedar:

Board & conditions
Grain
Conditions given as

Typical swings:

Spanish Cedar questions

How much does spanish cedar move with the seasons?

A 12″-wide flatsawn spanish cedar board moves about 5/32″ across a typical indoor swing from 6% to 12% moisture content; quartersawn, about 3/32″. Its tangential shrinkage is 6.3% and radial 4.2% (green to ovendry) — a moderate-movement wood.

How hard is spanish cedar?

Spanish Cedar rates about 600 lbf on the Janka scale — soft enough to dent in daily use (red oak is roughly 1,290 lbf). Density runs about 29 lb/ft³ at indoor moisture levels.

Is spanish cedar good for wide panels and tabletops?

Yes, with normal precautions: its 1.5:1 tangential-to-radial ratio is unusually balanced, so panels stay flatter than most. Still fasten solid tops so they can move across their width.

Similar species

Red Alder · Sassafras · Northern Catalpa · American Chestnut · Yellow-Poplar (Tulipwood) · Silver Maple

Shrinkage, specific gravity, and hardness from the Wood Handbook, FPL-GTR-282 (2021 edition), USDA Forest Products Laboratory (public domain). Values are species averages — individual boards vary with growth conditions and how they were dried.