Rust-oleum 9331 Varathane Satin Clear Exterior Spar Urethane

Product Description

The RUST-OLEUM 9331 Varathane Satin Clear Exterior Spar Urethane is a solvent-based topcoat engineered for wood surfaces exposed to outdoor and marine environments. It forms a tough, flexible film that resists moisture, UV radiation, and the mechanical stress that comes with seasonal expansion and contraction. An integrated ultraviolet absorber is built into the formula to slow sun-induced degradation of the wood and finish. At 1 gallon, the 9331 delivers enough coverage for large exterior projects and is commonly referenced in the trade as a liquid plastic finish for its hard, protective characteristics.

This spar urethane is suited for residential and light commercial exterior applications where wood surfaces require durable, long-lasting protection. Typical installations include siding, patio furniture, railings, exterior entry doors, and wood trim above the waterline on boats and docks. The self-leveling formula reduces brush marks and aids in achieving a consistent satin sheen across flat and vertical surfaces alike. Marine contractors, finish carpenters, and experienced painters are the primary installers for this product type.

Key Features

• UV absorber built into formula to protect wood from sun damage
• Flexible film construction accommodates natural wood movement in outdoor conditions
• Excellent flow and self-leveling properties reduce application marks
• Satin sheen finish for a low-gloss, professional appearance
• Rated for exterior and marine wood exposure including above-waterline boat decks
• 1-gallon container suitable for large-scale exterior coating projects

Compatibility

Designed for use on exterior and marine wood surfaces including siding, patio furniture, railings, exterior doors, wood boat decks, and trim above the waterline.

Installation Notes

Surface preparation is critical — wood should be clean, dry, and free of existing loose or peeling finish before application. Follow all label directions regarding thinning, recoat times, and ventilation requirements. Apply in moderate temperature and humidity conditions to ensure proper film formation and cure. Dispose of solvents and used materials in accordance with local regulations.

Technical Specifications

• Finish: Satin Clear
• Container Size: 1 gallon
• Weight: 8.575 pounds
• UPC: 00026748009334

Standard Information

• Brand: RUST-OLEUM
• Manufacturer Part Number: 9331