Osmo UV-Protection Oil - Extra 420 Clear - 2.5L

Stop exterior timber from weathering prematurely and save yourself endless hours of prep work down the line with Osmo UV-Protection Oil - Extra 420 Clear - 2.5L. When exterior woods naturally grey into a patina colour over time, this specialised treatment slows that greying process by 12 times compared to untreated wood, maintaining the natural look of your project. Developed specifically for windows, doors, cladding, fencing, and other vertically structured joinery, it delivers a natural oil-based and microporous finish that never cracks, flakes, peels, or blisters.

Designed for easy application without requiring sanding for future maintenance, this moisture-regulating formula actively reduces wood swelling and shrinkage while providing dependable resistance against water and dirt. Because it contains biocides, it actively resists the growth of algae, mildew, and fungal attack, keeping vertical timber looking professional for longer.

Features

• Very water and dirt resistant
• Reduces wood swelling and shrinkage
• 410 Clear is safe for humans, plants and animals once dry
• 420 Clear contains biocides to resist the growth of algae, mildew and fungal attack
• Microporous, breathable finish - does not crack, peel, flake or blister
• No sanding necessary for future applications

Specifications