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Exterior Clear Protective Finishes

Minwax® Helmsman® Spar Urethane

Minwax® Helmsman® Spar Urethane

Helmsman® Spar Urethane is a specially formulated protective clear finish for exterior or interior wood that is exposed to sunlight, water, or temperature changes. It contains UV blockers to reduce the sun's graying and fading effects. Helmsman® Spar Urethane forms a protective barrier against rain and moisture and its special oils allow the finish to expand and contract with the wood as seasons and temperatures change.

Helmsman® Spar Urethane is not recommended for use on floors.

* Helmsman® Spar Urethane is also available in an aerosol can.

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Product Details

Sheens: Gloss, Semi-Gloss, Satin
Application Tool: natural bristle brush
Location: interior and exterior wood surfaces
Recoat: after 4 hours
Dry time: 24 hours
Cleanup: mineral spirits
Coverage: 125 sq. ft. per quart
Coats: 2-3
Recommended Uses: doors, windows, bathroom cabinets, bar tops, kitchen countertops and outdoor furniture

FAQ

Q. How does Helmsman® Spar Urethane 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.

Q. 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 Polyurethane for Floors.

Q. Should Helmsman® Spar Urethane 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.

Q. 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.

Directions

For aerosol directions, click here

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.

DIRECTIONS:

  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 four 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.

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

Coverage: Approximately 125 sq. ft. per quart

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 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 is applied over light-colored stains or wood surfaces. Always spot test on an inconspicuous area to ensure satisfactory results.

Aerosol Directions

WARNING! If you scrape, sand or remove old paint, you may release lead dust. Lead is Toxic. Contact the National Lead Information Hotline at 1-800-424-LEAD or log onto www.epa.gov/lead.

  1. Surface must be dry and free of paint, wax, grease, polish; oil 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. Shake can vigorously.
  5. Hold can vertically 12 inches from surface, depress button fully.
  6. Move can evenly across surface with slightly overlapping strokes. On unfinished wood, apply sufficient material to seal open joints, edges and end-grain.
  7. Apply thin coats to avoid runs and sags. If unable to recoat within 1 ½ hours, wait a minimum of 72 hours, then lightly sand and recoat. Note: For exterior surfaces or bare wood, three coats are recommended.
  8. After final coat, allow 24 hours before normal use.

Note: Above 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. Helmsman® Spar Urethane 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 is applied over light-colored stains or wood surfaces. Always spot test an inconspicuous area to ensure satisfactory results.

Nozzle Care

  1. After each use, clear valve by holding can upside down and spraying until only clear gas comes out.
  2. If spray button becomes clogged, wear eye protection; wipe off button opening with lacquer thinner- Do NOT stick pin in spray button opening.

CAUTIONS: CONTAINS ALIPHATIC HYDROCARBONS AND KETONES.

DANGER! EXTREMELY FLAMABLE. Keep away from heat, sparks, and open flame. Vapors will accumulate readily and may ignite explosively. Keep area ventilated during use and until all vapors are gone. DO NOT SMOKE – Extinguish all flames, pilot lights and heaters. Turn off stoves, electric tools and appliances, and other sources of ignition. CONTENTS UNDER PRESSURE. Avoid prolonged exposure to sunlight or heat from radiators, stoves, hot water and other heat sources that may cause bursting. Do not puncture, incinerate, burn or store above 120°F (49°C). Keep upright in a cool, dry place. Do not discard empty can in trash compactor.

VAPOR HARMFUL. Use with adequate ventilation. Avoid continuous breathing of vapor and spray mist. To avoid breathing vapors or spray mist, 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.

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.

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.

DO NOT TAKE INTERNALLY.

KEEP OUT OF THE REACH OF CHILDREN.

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