What Is Fresh Sawn Douglas Fir?
Fresh sawn Douglas fir is timber that has been newly cut from the log and has not been seasoned or dried.
It still contains much of its natural moisture (typically 30–60%), which makes it heavier but easier to work.
The species is Pseudotsuga menziesii, native to North America and widely grown in the UK and Europe. It’s technically a softwood, but a very strong, dense, and durable one — often chosen as a lighter and more stable alternative to oak.
Physical and Mechanical Properties
| Property | Description |
| Moisture Content (Fresh Sawn) | 30–60% |
| Density (Green) | ~700–850 kg/m³ |
| Grain | Straight or slightly wavy; prominent growth rings |
| Colour | Pale orange-pink to reddish-brown heartwood; lighter sapwood |
| Texture | Medium to coarse |
| Workability | Machines and cuts easily when green |
| Durability | Moderately durable (heartwood); sapwood perishable if untreated |
Advantages of Fresh Sawn Douglas Fir
Excellent Strength-to-Weight Ratio
Douglas fir is among the strongest softwoods used in construction — suitable for large structural spans and load-bearing applications.
Dimensional Stability
Shrinks less and moves less than many other green timbers (e.g. oak or larch).
Workability
Easy to saw, mortise, and plane when freshly cut; pleasant resin aroma.
Attractive Appearance
Reddish colour and clear grain make it ideal for exposed beams and trusses.
Availability & Value
Readily available in large sections and generally more affordable than oak or larch.
Sustainable
Often UK- or European-grown.
Common Uses
Fresh sawn Douglas fir is widely used for both structural and decorative purposes:
Timber frame buildings and post-and-beam structures
Roof trusses, rafters, and purlins
Lintels, joists, and bridging beams
Pergolas, porches, and outdoor structures
Boardwalks, bridges, and cladding (treated)
Garden sleepers and landscaping timbers
