Osmo Uv Protection Oil Tints Oak (425) - 3L
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Product Information
Full details
Osmo UV-Protection-Oil Extra in Oak (425) is a clear, satin-matt finish designed for exterior vertical wood surfaces. It offers significant protection against UV radiation and decay, extending the life of wood like cladding, doors, and fences. While it prolongs the natural greying process, its effectiveness is primarily for vertical applications and requires reapplication as wear becomes visible.
All features
| Model Part Number | 425 |
|---|---|
| Brand | Osmo |
Extended Product Information
FAQs
What is the coverage rate for Osmo UV-Protection-Oil Extra?
Approximately 16 m²/L with one coat on smooth wood, and 12 m²/L with two coats on smooth wood. Rough sawn or stripped wood will require more material.
Can this product be used on wooden decks or horizontal surfaces?
Osmo UV-Protection-Oil Extra is primarily designed for vertical surfaces. Its performance on horizontal surfaces, which are exposed to more wear and moisture, is not guaranteed and re-coating may be needed more frequently.
Do I need to sand the wood before applying this oil?
No, if the wood is bare and clean. For re-coating an existing Osmo finish, no sanding or primer is necessary. Old varnishes or incompatible finishes must be removed.
How many coats of UV-Protection-Oil Extra are recommended?
Two coats are recommended for a complete finish. If applying over a pre-stained surface, one coat is sufficient as a final finish.
What is the purpose of the UV-Protection factor 12?
The UV-Protection factor 12 indicates that the finish, when applied in two coats as a stand-alone treatment, can prolong the natural greying process on vertical surfaces by a factor of 12 compared to untreated wood.
Can I apply this oil in cold weather?
It is best to apply when temperatures are between 5°C and 35°C. Lower temperatures will significantly increase drying time and may affect the final finish. Ensure the wood is frost-free.
How do I clean my Osmo-treated wood surfaces?
Clean with a damp cloth and mild household detergents. For more stubborn dirt, use Osmo Wash and Care. Avoid using high-pressure washers which can damage the wood.
Troubleshooting
Wood is greying faster than expected
Ensure the product was applied to vertical surfaces only and that two coats were applied for complete protection. Check if the wood was properly prepared and is not exposed to excessive horizontal moisture.
Uneven finish after application
Stir the product thoroughly before and during application. Apply evenly with a brush or roller, avoiding over-application or 'pooling' of the oil. Ensure consistent application speed.
Product is drying too slowly
Lower temperatures and high humidity can significantly increase drying times. Ensure application occurs within recommended temperature and humidity ranges. Avoid applying in direct, hot sunlight which can cause premature skinning.
Existing finish is peeling or flaking
The existing finish was likely not compatible or was not properly removed. Ensure all old varnishes or incompatible finishes are completely stripped before applying Osmo UV-Protection-Oil Extra.
Pros and Cons
Pros
- Significantly extends the time before wood needs re-coating.
- Protects against biological decay like mould and algae.
- Maintains a natural, non-cracking finish.
- Easy to apply and maintain, no sanding required for re-coating.
- Enhances the natural look of the wood with a satin-matt sheen.
Cons
- Primarily designed for vertical surfaces; performance on horizontal surfaces may vary.
- Requires re-coating when signs of wear appear.
- Drying time can be extended in cooler or more humid conditions.
- Initial preparation requires thorough cleaning of old finishes.
Setup, Compatibility & Care
Preparation: Ensure the wood surface is clean, dry, and frost-free, with a maximum moisture content of 20%. For existing finishes, clean old open-porous coatings thoroughly. Remove any old varnishes or flaking coatings.
Application: Osmo UV-Protection-Oil Extra is ready to use and should not be thinned. Stir well before application. Apply thinly and evenly with a brush or roller. For a complete finish, two coats are recommended. For use as a final finish over a stain, one coat is sufficient.
Drying: Allow approximately 12 hours for drying under normal climatic conditions (23°C / 50% relative humidity). Cooler temperatures or higher humidity may increase drying time.
Care: Clean the finished surface with a mild household cleaner. For re-coating, apply one coat when signs of wear become visible. No sanding or primer is necessary for renewal.
Compatibility: Suitable for all vertical exterior woods, including dimensionally stable (e.g., Accoya) and non-dimensionally stable (e.g., Larch) types. Also suitable for doors, windows, carports, cladding, balconies, screens, fences, pergolas, garden houses, furniture, and bamboo.