OSMO One Coat Only HS-Plus Wood Finish Instruction Manual

1. Product Overview

The OSMO One Coat Only HS-Plus is a high-quality, transparent, satin-matte, and microporous wood finish designed for both exterior and interior applications. This product is formulated to be water-repellent, control moisture, and effectively reduce wood swelling and shrinkage. Its unique composition allows for optimum surface protection and a lasting finish with just a single thin coat.

Key Features:

• Requires only one coat for effective protection.
• Provides weather-proof and UV-resistant properties.
• Formulated with a minimal amount of solvent.
• Resistant to cracking, flaking, peeling, or blistering.
• Offers excellent coverage: approximately 275 sq ft per liter.

Image 1.1: A 2.5-liter can of OSMO One Coat Only HS-Plus wood finish in FIR Green. The label highlights its "One Coat Only" feature and suitability for exterior and interior use.

2. Safety Information

Always prioritize safety when working with wood finishes. Adhere to the following guidelines:

• Ventilation: Ensure adequate ventilation during application and drying. Work in a well-ventilated area or outdoors.
• Personal Protective Equipment (PPE): Wear appropriate gloves (e.g., nitrile or chemical-resistant) and eye protection (safety glasses or goggles) to prevent skin and eye contact.
• Inhalation: Avoid prolonged breathing of vapors. If working in confined spaces, use a respirator.
• Flammability: Keep away from open flames, sparks, and other ignition sources. Do not smoke while using the product.
• Storage: Store in a cool, dry, well-ventilated place, away from direct sunlight and extreme temperatures. Keep container tightly closed when not in use.
• Disposal: Dispose of product residues and empty containers according to local regulations. Do not pour into drains or watercourses.
• First Aid: In case of contact with skin, wash thoroughly with soap and water. In case of eye contact, rinse immediately with plenty of water for several minutes and seek medical advice. If swallowed, do not induce vomiting; seek medical attention immediately.

3. Preparation

Proper preparation is crucial for achieving the best results and ensuring the longevity of the finish.

1. Surface Condition: The wood surface must be clean, dry, and frost-free. It should be free from dirt, dust, grease, wax, and old flaking paints or varnishes.
2. Sanding: Sand the wood surface thoroughly. For interior wood, a final sanding with P120-P150 grit sandpaper is generally recommended. For exterior wood, P80-P120 grit is often sufficient. Remove all sanding dust completely before application.
3. Wood Type: Ensure the wood is suitable for oil-based finishes. For exotic or oily woods, a trial application on an inconspicuous area is recommended to check for adhesion and color.
4. Stirring: Stir the OSMO One Coat Only HS-Plus thoroughly before use. Ensure all pigments are evenly distributed from the bottom of the can. Continue stirring periodically during application.
5. Test Application: Always perform a test application on a small, inconspicuous area of the wood to assess color, adhesion, and overall appearance before proceeding with the entire project.

4. Application (Setup & Operating)

Follow these steps for optimal application of OSMO One Coat Only HS-Plus:

1. Application Tools: Use a natural bristle brush, a microfiber roller, or an OSMO Floor Brush for larger areas.
2. First Coat: Apply a very thin, even coat along the wood grain. Ensure the product is spread thinly and evenly. Remove any excess product immediately with a clean, lint-free cloth.
3. Coverage: One liter of OSMO One Coat Only HS-Plus covers approximately 275 square feet (25 square meters) with a single coat, depending on the wood type and surface absorbency.
4. Drying Time: Allow approximately 12 hours for drying under good ventilation and normal room conditions (approx. 23°C/50% relative humidity). Lower temperatures or higher humidity will extend drying times. Ensure the surface is completely dry before light use.
5. Curing Time: The finish will be fully cured and hardened after approximately 2-3 days. Avoid heavy use or placing heavy objects on the surface during this period.
6. Cleaning Tools: Clean brushes and tools immediately after use with OSMO Brush Cleaner or mineral spirits.

Image 4.1: A close-up of a wood sample treated with OSMO One Coat Only HS-Plus, showcasing the FIR Green color and the natural wood grain.

5. Maintenance

Proper maintenance will help preserve the beauty and protective qualities of your OSMO finish.

• Regular Cleaning: For general cleaning, use a damp cloth and a mild, pH-neutral cleaner. Avoid harsh chemical cleaners or abrasive pads, as these can damage the finish.
• Spot Cleaning: For stubborn stains, use OSMO Wash and Care or a similar product specifically designed for oiled wood surfaces.
• Re-application: The frequency of re-application depends on wear and exposure. For exterior surfaces, re-apply when the finish starts to show signs of weathering or fading, typically every 2-5 years. For interior surfaces, re-application is less frequent, often only when the surface appears dull or worn. No sanding is required for re-application; simply clean the surface and apply another thin coat.
• Avoid Excessive Moisture: While water-repellent, avoid leaving standing water on the surface for extended periods. Wipe up spills promptly.

6. Troubleshooting

Here are solutions to common issues that may arise during or after application:

7. Specifications

• Brand: OSMO
• Model Number: 924225
• Color: FIR Green
• Finish Type: Satin-Matte
• Material Compatibility: Wood
• Recommended Uses: Exterior and Interior wood surfaces
• Unit Count: 84.54 Fluid Ounces (2.5 Liters)
• Coverage: Approximately 275 sq ft (25 m²) per liter per coat
• Drying Time: Approx. 12 hours (under normal conditions)

8. Warranty and Support

OSMO products are manufactured to high-quality standards. For specific warranty information regarding the OSMO One Coat Only HS-Plus, please refer to the official OSMO website or contact their customer support directly. Keep your purchase receipt as proof of purchase.

For technical assistance, product inquiries, or support, please visit the official OSMO website or contact your local distributor.