Glulam from pressure-impregnated spruce, surface treated with black impregnated oil.
Spruce
Spruce is one of the most common trees in the Nordic region. Its wood is usually softer than that of pine and it is generally less rot-resistant. Due to its straight stem and fine branching, spruce usually produces timber of good quality and is one of the most common tree species in the production of sawn building timber.
Steel
Nola uses high-quality steel with good strength in our products. Steel rusts if left untreated and must therefore be surface treated.
Stainless steel
Stainless steel is an iron alloy with at least 10.5% chromium that often has good resistance to corrosion (rust) and other chemical attacks. A common misconception about stainless steel is that it does not rust at all; it can in fact corrode, especially in environments near the sea with high humidity.
Hot-dip galvanized or electrogalvanized and powder coating
Available in either only hot-dip galvanized steel or electro-galvanized and powder-coated steel.
Hot-dip galvanizing provides very strong protection against corrosion. The steel is dipped into a bath of hot liquid zinc. The zinc attaches and creates a surface coating on the steel part, which is then taken out of the bath and drained of excess zinc.
Electrogalvanizing provides corrosion protection through the sacrifice of zinc ions. It is created via a zinc coating on the steel using an electric current. Powder coating is a coating that is applied as a free-flowing, dry powder. Unlike conventional liquid paint, powder coating is usually applied electrostatically and then cured under heat or with ultraviolet light. The result is an even, hard-wearing coloured surface with the desired gloss level.