Spruce is a resinous species, not confused with fir, which does not have the same characteristics. Spruce is the trade name for the botanical species Picea abies or Picea excelsa, which belong to the Pinaceae family.
What is Spruce?
SPF low grade Spruce is widely used in construction. It is a wood species that has many qualities:
- Nobility and aesthetics with a straight grain and a cream shade that welcomes the finishes.
- Aesthetics – Natural color and warm for interiors.
- Homogeneous – Small, healthy, and adherent knots.
- Accepts treatments and finishes; it then becomes resistant and durable.
- Environmentally friendly, 100% ecological.
Spruce is the common name of the botanical species Picéa Abies, which belongs to the Pinaceae family—coming from forests with a harsh climate. Slow-growing wood has a straight grain and a fine and regular grain.
Spruce is characterized by its port: a straight trunk, a conical crown, wide at low altitude and narrow at high altitude and in northern regions. It reaches an average height of 35 to 40 meters in size, but some specimens measure 60 meters in their immediate environment. The trunk rarely exceeds 1.5m in diameter.
Appearance of wood
The SPF low grade spruce wood is very light, whitish to cream. In mountain spruces, it is glossy and sometimes even pearly. The rings are visible, circular, and of uniform widths. Spruce from cold regions has narrow and regular rings. The frequent resin pockets are often discarded in production for noble products such as panelling and cladding.
It is recommended to implement a finish to prolong its life and its aesthetics. The finish gives good results as long as the wood is sufficiently dry.
The different qualities of spruce wood offer multiple uses:
- frames and structures (massive, industrialized, or glued laminated);
- interior fittings such as door frames, cladding, floor coverings, mouldings, shutters;
- electric poles, poles, props;
- formwork, packaging, pallets;
- violin making (soundboard for violins, guitars, pianos, harps);
- aircraft construction;
- Related products: bark for boiler rooms, chips for crushing, sawdust for cat litter.
Conclusion: Spruce is durable for up to 50 years with good dimensional stability if it has been preserved in class 3.1 and if it is covered with a maintained finish. Outdoor use requires preservation by treatment in an autoclave under vacuum to give it appropriate durability.