Rust-oleum 9441H Exterior Spar Urethane Semi-gloss 1 Qt

Product Description

The RUST-OLEUM 9441H is an exterior oil-based premium spar urethane finish in a semi-gloss sheen, sold in a one-quart unit. It provides a durable, UV and weather-resistant protective film over wood surfaces exposed to outdoor conditions. The formula is designed for use on surfaces subject to sunlight, moisture, and temperature cycling. It is typically applied by brush or wipe-on technique and is used by finish carpenters, painters, and woodworkers on exterior trim, doors, window frames, railings, and marine surfaces requiring a tough, clear topcoat.

This spar urethane is suited for residential and light commercial exterior wood applications where long-term UV protection and moisture resistance are priorities. Typical install scenarios include exterior door and window trim finishing, porch railings, outdoor furniture refinishing, and boat trim. It is formulated for oil-based application systems and is compatible with oil-based primers and stains. Note: For use in South Coast California Air Quality Management District counties, substitute item 776-155 to meet local VOC regulations.

Key Features

• UV-resistant formula protects exterior wood from sun degradation and weathering
• Oil-based chemistry delivers a hard, durable film with good moisture resistance
• Semi-gloss sheen provides a clean, low-reflectance finish on trim and wood surfaces
• One-quart package size is suitable for smaller trim and finish projects
• South Coast CA county VOC compliance requires substitute item 776-155

Compatibility

Designed as an oil-based topcoat for exterior wood surfaces. Compatible with oil-based primers and stains on wood substrates including trim, doors, and marine applications. South Coast California counties must use item 776-155 in place of this product.

Installation Notes

Application should be performed by a qualified painter or finish carpenter following the manufacturer application instructions for surface prep, thinning, and dry time. Ensure adequate ventilation when working in enclosed areas, as this is an oil-based solvent product. Clean brushes and equipment with mineral spirits or paint thinner. Observe all applicable local VOC regulations before use, particularly in regulated air quality districts.

Technical Specifications

• Finish Type: Oil Based
• Sheen: Semi-Gloss
• Application: Exterior
• Product Type: Spar Urethane
• Container Size: 1 Quart
• UV Resistance: Yes
• Weather Resistance: Yes
• Weight: 5 pounds
• Package Quantity: 2 units per package

Standard Information

• Brand: RUST-OLEUM
• Manufacturer Part Number: 9441H