COLOR: Heartwood is yellowish tan to light brown. 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.
HARDNESS (JANKA): 660; 49% softer than Northern red oak.
DIMENSIONAL STABILITY: Above average (change coefficient .00267; 28% more stable than red oak).
DURABILITY: Durable but easily dented. Somewhat brittle and splinters easily, especially with age. Used for flooring, but may not be suitable for all applications due to its softness.
IMAGE FINISH:Top portion is finished with water-base urethane; bottom with oil-modified polyurethane.