Osmo UV Protection Oil Extra - Larch - Matt - 2.5L
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Product Information
Full details
Osmo UV Protection Oil Extra is an ideal solution for homeowners and professionals looking to preserve the appearance of exterior timber surfaces such as cladding, windows, doors, and garden furniture. This high-quality, oil-based finish provides a robust UV-12 protection factor that prevents wood from greying while maintaining breathability. While it delivers excellent resistance to moisture, mould, and algae, it is important to note that this product is lightly pigmented and requires careful consideration of its finish color before application.
All features
| Model Part Number | 426 |
|---|---|
| Brand | Osmo |
Extended Product Information
FAQs
Can I use this on decking?
This product is primarily designed for vertical surfaces. For decking, it is recommended to use dedicated anti-slip decking oils.
Do I need to sand the wood before applying?
Yes, light sanding opens the pores and ensures the oil absorbs correctly, especially on hardwoods or weathered timber.
How many coats should I apply?
Generally, two coats are recommended for optimal protection, ensuring the first coat is fully dry before applying the second.
Is this product suitable for all wood types?
It is suitable for most exterior timber; however, always perform a small test patch on a hidden area to verify color compatibility.
How do I clean my brushes after use?
Clean tools using a suitable solvent or brush cleaner recommended for oil-based finishes.
Troubleshooting
The finish looks patchy or uneven
This usually occurs due to uneven application or wood porosity. Lightly sand the area and apply a thin, uniform second coat.
The product is taking a long time to dry
Ensure the application was thin. Excessively thick coats will struggle to dry; wipe away any pools of oil immediately after application.
Surface is showing mold despite the oil
The wood may have been damp before application. Ensure the moisture content is below 20% before treating the timber.
Pros and Cons
Pros
- Significantly delays UV-induced greying of wood
- Breathable formula prevents peeling and flaking
- Integrated base and top coat system
- Strong resistance against moisture and fungal growth
- Easy to maintain and re-apply
Cons
- Requires proper surface preparation for optimal results
- Lightly pigmented, which may slightly alter the natural wood tone
- Not suitable for heavy-traffic deck surfaces without specific base coats
- Requires attention to drying times between coats
Setup, Compatibility & Care
Before application, ensure the wood is clean, dry, and free from previous varnishes or paints. If the surface was previously finished with a film-forming coating, it must be sanded back to bare wood. Apply the oil using a brush or microfiber roller in the direction of the wood grain. For maintenance, simply clean the surface with a damp cloth and re-apply a single fresh coat once the original finish starts to show signs of wear. Store the container in a cool, dry place and ensure the lid is tightly sealed to prevent the oil from skinning.