Douglas Fir

Pseudotsuga menziesii

(Left-Oil based / Right-Water based finish)
Appearance: Color: Yellowish tan to light brown heartwood. Sapwood is tan to white Heartwood may be confused with that of Southern yellow pine. Radical color change upon exposure to sunlight.
Grain: Normally straight, with occasional wavy or spiral texture. Nearly all fir flooring is vertical grain or riftsawn clear grade material.
Availability: Readily available
Properties:
Hardness:660 Janka Table,49% softer than Northern red oak
Durability: Durable but easily dented. may not be suitable for all flooring applications.
Workability: Sawing: Harder to work with hand tools than soft pines.
Nailing: Good
Sanding: Satisfactorily
Finishing: May change color with some finishing products, and care must be taken to avoid over sanding.