Osmo UV-Protection-Oil Extra 420 Clear Satin is a high-performance exterior wood oil designed to protect and enhance vertical timber surfaces while helping slow down natural greying caused by UV exposure.
Its clear, microporous oil-based finish allows the wood to breathe while providing excellent water and dirt resistance.
Genuine Osmo
2.5 Litre
420 Clear Satin
Exterior UV-protection oil
Designed for vertical timber
Helps delay natural greying
UV protection up to 12× compared with untreated wood
Water and dirt resistant
Microporous and breathable
Helps reduce swelling and shrinkage
Does not crack, peel or flake
Active film protection against mould, algae and fungal attack
Approx. 18m²/L coverage per coat
2 coats recommended
Approx. 12 hours drying time
Easy maintenance
No sanding normally required when recoating an intact finish
Ideal for vertical exterior wooden surfaces including:
Windows
Doors
Cladding
Fencing
Exterior joinery
Timber façades
Other vertical outdoor woodwork
Not recommended as the primary finish for flat horizontal surfaces such as decking.
Ensure the wood is clean, dry and frost-free.
Maximum recommended wood moisture content is approximately 20%.
Stir thoroughly before use.
Apply thinly in the direction of the wood grain using:
Osmo Flat Brush
Suitable Microfibre Roller
Allow the first coat to dry for approximately 12 hours.
Apply a second thin coat once dry.
Coverage: Approx. 18m² per litre per coat
Coats: 2
Drying Time: Approx. 12 hours
Coverage and drying time may vary depending on timber type, surface preparation, temperature, humidity and application thickness.
The clear 420 finish helps protect exterior timber from weathering and can slow the natural greying process by up to 12 times compared with untreated wood when correctly applied.
The finish also contains active ingredients to help protect the coating against mould, algae and fungal attack.
When signs of wear become visible, clean and dry the surface before applying a fresh thin maintenance coat.
If the existing finish is sound, sanding is generally not required before maintenance coating.
Always read and follow the product label and safety instructions before use.
Use in a well-ventilated area.
Avoid contact with skin and eyes.
Keep away from heat and ignition sources.
Keep out of reach of children.
Wear suitable protective equipment where required.
Dispose of used materials responsibly according to the product instructions.
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