The question often arises as to whether adding a special hardener to wood oil is necessary. The OLI-NATURA HS Hardener is optional for many of our oils and is not required for every application: however, it offers decisive advantages for a fast and robust finish, particularly for parquet floors or wooden washbasins. Adding it intensifies oxidative polymerization, accelerates curing and increases resistance. Read on to learn when and why using a hardener is recommended.

Stronger bonds: intensifying oxidative polymerization

Drying oils such as linseed oil and tung oil, which are rich in unsaturated fatty acids, cure as soon as they come into contact with atmospheric oxygen. Adding OLI-NATURA HS Hardener not only accelerates this process of oxidative polymerization, but also intensifies it. The result? A tighter molecular network that makes the treated surface considerably more resistant and durable. Figuratively speaking, this process resembles the production of a fabric: individual threads alone do not yet form a fabric, but interweaving many threads creates a mesh. If this fabric is woven even more densely, it provides improved protection."

Faster curing: less downtime, greater efficiency

In commercial environments, every minute counts. Our special hardener additive OLI-NATURA HS Hardener significantly shortens curing time because it accelerates the molecular cross-linking of the oil. This is particularly important for professionals such as parquet installers, helping to minimize downtime. Your surfaces are ready for use sooner - perfect for high-traffic areas."

Increase abrasion resistance: a small addition, a major effect

The OLI-NATURA HS Hardener also significantly accelerates pigment bonding in coloured oils such as the coloured parquet oil OLI-NATURA HS Professional Oil or our two-component OLI-NATURA Colour Oil. Surfaces treated with coloured oil are not only more durable, but also completely resistant to colour abrasion after 24 hours."

Fine sanding? No problem!

The final sanding is absolutely crucial when treating wood surfaces with oil. If the wood is sanded too finely, it cannot absorb the oil optimally. Especially for surfaces sanded considerably finer than 180 or 240 grit - as is often the case with wood and epoxy resin tables - we recommend using our 2K method with OLI-NATURA HS Hardener. This ensures that the oil can bond perfectly with the cellulose fibres of the wood even after very fine sanding and provide a durable finish.

No training required

The OLI-NATURA HS Hardener, a next-generation isocyanate-based product, is completely VOC-free and emission-free and exceeds the strictest EU limits. Although no training is required for its use, we nevertheless recommend that experienced applicators handle it in order to correctly observe specific technical aspects such as pot life.

Conclusion:
With the exception of OLI-NATURA Colour-Oil 2C, for which HS Hardener is mandatory, our oils can be applied either with or without hardener. These oils include OLI-NATURA Worktop-Oil, HS hardwax oil, HS Professional Oil, Scandic-Oil and Skogen-Oil. Not every application requires the use of hardener, but especially for professional applications such as parquet floors or wooden washbasins with frequent contact with water, where fast curing and a very robust surface are desired, OLI-NATURA HS Hardener is recommended. The hardener accelerates the oxidative polymerization of the oil and significantly increases its resistance.

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The »OLI-NATURA HS Hardener« is VOC-free, emission-free and requires no special training for use.

The VOC-free OLI-NATURA HS Hardener accelerates curing, improves resistance and is added to the oil in the specified mixing ratio.

Contact:
If you want to buy wood oil, the selection may initially seem huge and confusing. We will help you make your decision and show you which OLI-NATURA oils & waxes best suit you - or rather, your project. Our experts will quickly and easily recommend a suitable wood oil, answer your product questions and provide application tips. We are happy to help with any questions, by telephone at 037208/84-488 or by email at faq@oli-lacke.de.