Transparent Wood Finish 000 Clear for exterior wood

Osmo Clear Oil Wood Finish 000

Osmo Clear Oil Wood Finish 000 is a clear satin finish based on natural plant oils. It has been developed for specialist exterior timber applications and can be used either as an absorbency-regulating base coat or as a transparent finishing coat.

Its microporous formulation penetrates deeply, repels water and helps reduce the natural swelling and shrinkage of timber. It does not create a closed varnish film and, when correctly applied, will not crack, flake or peel.

Because the product is completely clear, the natural appearance of the timber remains visible. The oil will, however, deepen the natural colour and create a permanent light wet-look effect.

Recommended applications

Osmo Clear Oil Wood Finish 000 is particularly suitable:

• As an absorbency-regulating base coat on softwood

• As a base coat on rough-sawn timber

• As a base coat on brittle, greyed or weathered exterior wood

• For reducing differences in surface absorbency

• As a satin top coat over a compatible pigmented Osmo finish

• For doors, windows and shutters

• For carports and garden buildings

• For timber cladding

• For balcony components

• For fencing and privacy screens

• For pergolas and similar exterior timber structures

It can be applied over completely dry Osmo One Coat Only HS Plus or Osmo Country Colour when a slightly more lustrous and easy-care surface is required.

Benefits of Osmo Clear Oil Wood Finish

• Clear satin exterior wood finish

• Based on natural plant oils

• Microporous and moisture-regulating

• Helps reduce swelling and shrinkage

• Water-repellent

• Penetrates deeply into the timber

• Balances differences in absorbency

• Does not crack, flake or peel

• Suitable as a base coat or transparent top coat

• Ready to use and must not be thinned

• Covers approximately 16 m² per litre

• Dries in approximately 12 hours

• Suitable for children’s toys after drying in accordance with EN 71.3

• Available in 0.75, 2.5 and 25 litres

Important: no protection against greying

Osmo Clear Oil Wood Finish 000 contains no colour pigments and therefore provides no protection against greying caused by ultraviolet radiation.

Do not use it as the only finish on timber that is directly and heavily exposed to sunlight and weather. It is particularly unsuitable as a standalone clear finish on wooden decking or similar horizontal exterior surfaces.

To retain the original colour of exterior timber for longer, select a suitable pigmented finish or a dedicated Osmo UV-Protection Oil.

Shorter maintenance intervals should always be expected on heavily exposed components such as fascia boards, post tops and window sills.

Surface preparation

The timber must be clean, dry and frost-free. Its moisture content must not exceed 20%.

Remove dust, dirt and loose wood fibres. Greyed or weathered timber can first be restored with Osmo Wood Reviver Power Gel where required.

Completely remove old paints and varnishes. Existing microporous finishes must be cleaned thoroughly. Always wear a suitable dust mask during sanding.

Timber species, absorbency and surface condition influence the final result. A trial application must therefore always be carried out.

Application as a base coat

Stir thoroughly before and during use. Osmo Clear Oil Wood Finish 000 is ready to use and must not be diluted.

Apply one thin coat in the direction of the wood grain using a suitable flat brush or microfibre roller. Spread the product thoroughly and do not leave heavy or wet areas.

Where possible, apply the first coat to all sides before installation. Include edges, joints and end grain.

Allow the base coat to dry for approximately 10–12 hours with good ventilation. Then apply the selected pigmented Osmo exterior finish.

Application as a satin top coat

Clear Oil Wood Finish can be applied as a very thin satin top coat over a compatible, completely dry, pigmented Osmo exterior finish.

Apply one very thin coat and distribute it evenly in the direction of the grain. Excessive application will delay drying and may create an uneven or sticky surface.

Because of its high oil content, the clear finish can cause a slight yellowing effect over white or very pale coatings. Use a specifically recommended light finish on white surfaces and always carry out a trial application.

Use the correct brush or roller

Apply with our recommended flat brushes or suitable microfibre rollers shown among the related products below.

The correct application tool makes it easier to distribute the required thin coat evenly. This reduces the risk of streaks, visible joins, local build-up and extended drying times.

Coverage and drying time

• Coverage: approximately 16 m² per litre with one coat

• Drying time: approximately 12 hours

• Reference conditions: 20–23°C and 50–65% relative humidity

• Maximum timber moisture content: 20%

• Colour: 000 Clear

• Finish: satin

• Container sizes: 0.75, 2.5 and 25 litres

Actual coverage depends on the species and surface structure. Rough-sawn, grooved or highly absorbent timber will require considerably more product.

Construction details

Horizontal timber components should have a slope of at least 15 degrees to allow water to drain away. Sharp edges should be rounded to a radius greater than 2 mm.

If the timber has already turned grey, restore it first with Osmo Wood Reviver Power Gel before applying a new finish.

Safe handling

Clean brushes and rollers with Osmo Brush Cleaner and Thinner.

Cloths and other materials soaked with oil can generate heat and ignite spontaneously. Spread them flat outdoors to dry completely or store them temporarily in a sealed metal container.

Keep out of reach of children and use only outdoors or in a well-ventilated area.

Technical information

• Osmo Clear Oil Wood Finish 000 – Technical Product Information (PDF)
  
  
• Osmo Clear Oil Wood Finish 000 – Safety Data Sheet (PDF)