The Difference: Linseed, tung and teak oil

Woodworking tools, terms and techniques can sometimes be confusing. Here, we help you make sense of the finer points of woodworking so you can make the right decision for your situation.

When it comes to finishing wood, under­standing the differences between linseed oil, tung oil and teak oil can help you choose the best option for your project. While lin­seed and tung oils are plant-based and cure through oxidation, teak oil is a blend of synthetic and natural ingredients, making it a different kind of finish.

Derived from flax seeds, linseed oil is available in three forms, each with distinct uses. Raw linseed oil is the least processed form but dries extremely slowly, often tak­ing weeks for a single coat to cure. As a result, it’s rarely used as a standalone fin­ish. Boiled linseed oil (BLO) is enhanced with drying agents such as petroleum-based compounds or heavy metals. It dries faster than raw linseed oil but is less eco-friendly and safe. Polymerized linseed oil (PLO), heated in the absence of oxygen, creates a pure and non-toxic option that dries quickly and leaves a slight sheen with a yellowish tint, especially noticeable on lighter woods. Linseed oil darkens over time, enriching the wood’s natural tones but may not provide significant protection against water or wear.

Tung oil is another plant-based finish that cures through oxidation, but it offers some distinct advantages over linseed oil. Pure tung oil, applied in multiple thin coats (five to six coats recommended), creates a natural finish with a warm, amber tone. Each coat requires wiping, sanding and up to a week to dry, making it a time-intensive process. Polymerized tung oil dries faster and is often enhanced with drying agents for convenience. It produces a harder, more water-resistant finish than linseed oil, curing to a matte or low-satin sheen. Be cautious of products labelled “tung oil,” as they may be varnish blends diluted with mineral spirits rather than pure tung oil.

Unlike linseed and tung oils, teak oil isn’t derived from a single source. It’s a commer­cial term for a variety of finishes, typically blends of mineral oil, linseed oil, tung oil or oil-and-varnish mixtures. Teak oil is formu­lated to penetrate dense woods, like teak, and enhance their natural beauty. However, its composition varies widely, so check the label for specific ingredients.

For more information about tung oil read “Tung Oil: debunking the myths” on our website.