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Helmsman® Spar Urethane 350 VOC Compliant

Minwax® Helmsman® Spar Urethane 350 VOC Compliant


Minwax® Helmsman® Spar Urethane 350 V.O.C. Compliant is specially formulated as a protective clear finish for exterior or interior wood exposed to sunlight, water, or temperature changes.

  • Contains UV blockers to reduce the sun's graying and fading effects.
  • Forms a protective barrier against rain and moisture
  • Special oils allow the finish to expand and contract with the wood as seasons and temperatures change.
  • Ideal for use on doors, windows, trim, bathroom cabinets, bar tops, kitchen countertops, outdoor furniture.

Product Details

Sheens: gloss, semi-gloss, satin
Application Tool: natural bristle brush
Location: interior and exterior wood surfaces
Recoat: after 6 hours
Dry Time: 24 hours before normal use
Cleanup: mineral spirits
Coverage: 400-500 sq. ft. per gallon
Coats: 2-3
VOC Content: maximum VOC of 350 g/L
Recommended Uses: doors, windows, trim, bathroom cabinets, bar tops, kitchen countertops, outdoor furniture, not recommended for floors
Availability: not available in California

Directions Instrucciones en Español

WARNING! Removal of old paint by sanding, scraping or other means may generate dust or fumes that contain lead. Exposure to lead dust or fumes may cause brain damage or other adverse health effects, especially in children or pregnant women. Controlling exposure to lead or other hazardous substances requires the use of proper protective equipment such as a properly fitted respirator (NIOSH approved) and proper containment and cleanup. For more information, call the National Lead Information Center at 1-800-424-LEAD (in US) or contact your local health authority.

  1. Surface must be dry and free of paint, wax, grease, polish, old finishes in poor condition or any foreign matter.
  2. Sand to obtain a smooth, uniform surface. Remove all dust with a damp cloth.
  3. If desired, apply stain, such as Minwax® Wood Finish™, to unfinished interior wood surfaces. Follow directions for application instructions and dry times.
  4. Stir well before and occasionally during use.
  5. Apply a thin coat of Helmsman® Spar Urethane using a high quality natural bristle brush. On unfinished wood, apply sufficient material to seal open joints, edges and end-grain.
  6. Let dry at least 6 hours, then sand entire surface lightly with very fine sandpaper (220 grit) to ensure an even finish and proper adhesion of additional coats.
  7. Apply second coat. If a third coat is desired, repeat Step 6 before applying. Note: For exterior surfaces or for previously unfinished wood, three coats are recommended.
  8. After final coat, allow 24 hours before normal use.

CLEANUP: For easy clean-up use mineral spirits or paint thinner.

COVERAGE: Approximately 400-500 sq. ft. per gallon.

Note: Dry times are based on good ventilation, temperature of 77°F and 50% relative humidity. Lower temperature, higher humidity, lack of air movement or application of thick coats will extend drying times. Always test surface for tackiness between coats. When used for exterior applications, maintain by lightly sanding and adding an additional coat(s) as conditions require.

Helmsman® Spar Urethane 350 VOC Compliant is not recommended for large exterior surfaces where maintenance would be difficult, such as decks and siding. Slight ambering may be experienced when Helmsman® Spar Urethane 350 VOC Compliant is applied over light-colored stains or wood surfaces. Always spot test on an inconspicuous area to ensure satisfactory results.

NOTE: The product may appear slightly dark or purple in the can, but it dries clear.

Special Note: This product has been formulated to comply with the environmental regulations limiting V.O.C. (Volatile Organic Compound) content. It contains high concentrations of quality resins, which lead to a thicker consistency than ordinary urethanes. Be sure to follow label directions carefully, especially as they pertain to coverage rates and the application of thin coats.

DANGER: Rags, steel wool, other waste soaked with this product, and sanding residue may spontaneously catch fire if improperly discarded. Immediately place rags, steel wool, other waste soaked with this product, and sanding residue in a sealed, water-filled, metal container. Dispose of in accordance with local fire regulations.


Contents are COMBUSTIBLE. Keep away from heat and open flame.

VAPOR HARMFUL. Use only with adequate ventilation. To avoid overexposure, open windows and doors or use other means to ensure fresh air entry during application and drying. If you experience eye watering, headaches, or dizziness, increase fresh air, or wear respiratory protection (NIOSH approved) or leave the area. Avoid contact with eyes and skin. Wash hands after using. Keep container closed when not in use. Do not transfer contents to other containers for storage.

FIRST AID: In case of eye contact, flush thoroughly with large amounts of water for 15 minutes and get medical attention. For skin contact, wash thoroughly with soap and water. In case of respiratory difficulty, provide fresh air and call physician. If swallowed, call Poison Control Center, hospital emergency room, or physician immediately.

DELAYED EFFECTS FROM LONG TERM OVEREXPOSURE. Contains solvents which can cause permanent brain and nervous system damage. Intentional misuse by deliberately concentrating and inhaling the contents can be harmful or fatal.

WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.


Frequently Asked Questions

How does Helmsman® Spar Urethane 350 VOC Compliant differ from other polyurethanes?

Helmsman® contains special ultraviolet absorbers to help protect wood from the graying and fading effects of the sun. Helmsman® also contains special oils that allow it to expand and contract with seasonal temperatures changes.

Can Helmsman® be used on interior floors?

No. Helmsman® is formulated to expand and contract with temperature changes. Because it is flexible, it is not suitable for use on floors. Floors require a harder finish such as Minwax® Fast-Drying Polyurethane, Minwax® Super Fast-Drying Polyurethane for Floors or Minwax® Water-Based oil-Modified Polyurethane.

Should Helmsman® Spar Urethane 350 VOC Compliant be applied to exterior furniture?

Yes, but no clear exterior finish will permanently protect wood against direct sun, snow, ice and rain. Be sure to check the finish annually to determine if it needs to be recoated. If the finish warrants, apply an additional coat of Helmsman® according to the label directions.

Is Helmsman® suitable for decks and fences?

No. Decks and fences have special requirements for protection against the elements. Use an exterior waterproofing product such as Thompson's® WaterSeal® Waterproofer Plus Clear Wood Protector.

Helmsman® looks dark in the can. Will this be the color that ends up on the wood?

Minwax® Helmsman may appear slightly dark or purple in the can, but it dries to a beautiful clear finish.

Safety Data Sheet


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