Clear Varnish for Outdoor Use
Without protection, exterior wood can weather quickly due to rain, sun, and dirt. With colorless Osmo oil stain, the wood remains water-repellent, protected from within, and retains its natural appearance, for example on fences and facades.

Products in this knowledge item;
What is clear varnish for exterior wood?
Exterior clear varnish is a collective term for colorless outdoor products that protect wood. A clear varnish colors the wood as if it were wet; therefore, it becomes slightly darker with the treatment. Varnishes are normally made of synthetic material. The products from Osmo Netherlands are made on a natural, plant-based oil. This has many advantages, as can be read below.
The colorless product for outdoor use is the Natuurlijke Olie-Beits 701 Kleurloos mat. This product colors the wood as if it were wet. This colorless treatment protects the wood against moisture and dirt and is made from natural oils. The Natuurlijke Olie-Beits can be used as both a first and a second coat, creating a protective surface.
Benefits of Natuurlijke Olie-Beits
- Primer and topcoat in one
- UV-resistant, weather and water-repellent.
- High yield, 1L = treats 24m²
- Based on natural substances
Supplies for clear varnishing exterior wood
Matte clear varnish for exterior wood
Osmo Natuurlijke Olie-Beits dries to a matte finish, meaning it contains no gloss. The product protects the wood against algae, fungi, and moisture.
Oil-Based Clear Varnish for Outdoors
Osmo Natuurlijke Olie-Beits is oil-based. This ensures that the wood is protected from the inside out and that the surface can continue to breathe. After treatment, the wood is protected against rain and wind. The terrace or fence can then be easily touched up locally with the same product.
Many outdoor varnishes form a closed layer on the wood. As a result, the wood cannot breathe properly and the layer may crack or peel over time. Consequently, you will need to treat the wood again soon.
UV Protection Clear Varnish
Osmo Natuurlijke Olie-Beits 701 Kleurloos mat is colorless and contains no color pigments. As a result, it offers less protection against UV radiation than a product with color pigments. Over time, the wood will gradually turn gray. This creates a beautiful gray patina. The wood remains protected against moisture and dirt. Looking for colorless protection with a UV filter for vertical wood? Then choose Osmo UV-Beschermingsolie. For a deck, use Osmo Terras-Olie.
Suitable for which types of wood?
In fact, Osmo Natuurlijke Olie-Beits can be applied to all exterior wood. This includes softwoods such as spruce, larch, and Douglas fir, European hardwoods such as oak, and tropical hardwoods such as bankirai and ipe.
If you are looking for a product with color pigment, please view the products below. The natural oil stain with color pigment provides better protection against UV radiation and thus against graying.
Video: Clear varnish for outdoor use
In this video you will see how to protect the wood with UV-Beschermingsolie.

Osmo UV-Beschermingsolie aanbrengen
We're happy to help
Looking for DIY advice or have a technical question?



