Osmo UV-Protection Oil Extra 420

1. What is Osmo UV-Protection Oil Extra 420?

Osmo UV-Protection Oil Extra 420 is a clear, satin wood finish designed for exterior use. It combines natural oils with active ingredients to protect wood surfaces against weathering, UV rays, and fungal attack. The finish is microporous, water-repellent, and reduces wood swelling or shrinkage.

2. What surfaces is this product suitable for?

This oil is ideal for exterior vertical wood surfaces, such as:

• Doors
• Windows
• Window shutters
• Timber cladding
• Pergolas
• Carports
• Fences
• Balconies
• Summerhouses

It is specifically designed for vertical applications and is not recommended for horizontal surfaces like decking.

3. How does Osmo UV-Protection Oil Extra 420 differ from other UV-Protection Oils?

Osmo UV-Protection Oil Extra 420 contains biocides to protect the finish against mould, algae, and fungal attack. This makes it ideal for areas prone to moisture or high weather exposure. Unlike the biocide-free version (Osmo UV-Protection Oil 410), it provides added microbial resistance.

4. How do I apply Osmo UV-Protection Oil Extra 420?

1. Preparation: Ensure the wood surface is clean, dry, and free from old paints or lacquers. Sand the surface if necessary and round off sharp edges.
2. Application: Stir well before use. Apply thinly and evenly along the grain with a brush or roller.
3. Drying: Allow approximately 12 hours to dry in a well-ventilated area.
4. Second Coat: Apply a second thin coat if required, following the same method.

For renovation, one coat on a clean, dry surface is typically sufficient.

5. What coverage can I expect?

One liter covers approximately 18 square meters with one coat. Coverage depends on the wood type and condition.

6. Is this product safe for use on children’s toys or animal enclosures?

Due to the inclusion of biocides, this product is not recommended for surfaces that come into direct contact with food or for children’s toys.

7. How do I maintain surfaces treated with this product?

• Cleaning: Use a mild exterior wood cleaner to remove dirt and debris.
• Maintenance: Apply a maintenance coat every 3-4 years to ensure continued protection. For areas exposed to strong weathering, such as window sills, shorter maintenance intervals may be required.

8. Can I use this product on horizontal surfaces like decking?

No, this product is designed specifically for vertical surfaces. For decking or other horizontal surfaces, consider using a finish specifically formulated for those applications.

9. How should I clean tools after use?

Clean brushes and rollers immediately after use with Osmo Brush Cleaner or a suitable solvent to maintain their condition.

10. Are there any precautions to take during application?

• Apply thin coats to ensure proper drying and avoid a sticky finish.
• Work in temperatures above 5°C and avoid direct sunlight during application.
• Always perform a test application on a small area to confirm compatibility and desired results.