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Minwax Helmsman Clear Semi-gloss Oil-based Interior/Exterior Spar urethane ( 1-quart )

Name: Minwax Helmsman Clear Semi-gloss Oil-based Interior/Exterior Spar urethane ( 1-quart )
Brand: Minwax
SKU: 999913677
Price: 30.48 USD
Availability: InStock
Rating: 4.4 (426 reviews)

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4.4

426

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Improved formula for advanced performance. Our trusted Helmsman® Spar Urethane protective clear finish for exterior and interior wood shields wood from sunlight, water, salt and weather, making it an excellent choice for areas exposed to rain, moisture or high humidity. Helmsman® Spar Urethane provides a mold + mildew-resistant coating along with marine-tough durability.

Minwax Helmsman Spar Urethane is specially formulated as a protective clear finish for exterior or interior wood exposed to sunlight, water, or temperature changes
Special oils allow the finish to expand and contract with the wood as seasons and temperatures change
Forms a protective barrier against rain, moisture, and UV blockers reduce the sun's graying and fading effects
Ideal for use on interior or exterior wood surfaces to include doors, windows, trim, bathroom cabinets, bar tops, kitchen countertops, and outdoor furniture
Not recommended for use on floors, decks, or fences
Cleans up easily with mineral spirits
Easy spray application
Also available in quart and gallon sizes
Also available in an aersol can

General
Color/Finish Family	Clear	Application Method	Brush/Wipe
Food-Grade	No	Shake Can Before Use	No
Sheen	Semi-gloss	Package Quantity	1
Type	Spar urethane	Unit of Measure Quantity	32
Number of Coats Recommended	2	Manufacturer Color/Finish	Clear
Use Location	Interior/Exterior	Unit of Measure	Fluid ounce(s)
Paint Color Family	Clear	Base Material	Oil-based
Sub-Brand	Helmsman	Clean-up Method	Mineral spirits

Dimensions
Maximum Coverage Area (Sq. Feet)	100	Container Size	1-quart

Features
Dry to Touch	1-2 hours	Dry to Re-Coat	4 hours
Fade Resistant	Yes	UV Protection	Yes
Moisture Resistant	Yes

Certifications
CA Residents: Prop 65 Warning(s)	Prop 65 WARNING(S) -

Warranty
Warranty	Limited lifetime

Compatibility
For Use on Unfinished Wood	Yes	For Use on Softwood	Yes
For Use on Painted Wood	No	For Use on Hardwood	Yes
For Use on Finished Wood	No

Miscellaneous
UNSPSC	31211700

Check out the Best Selling Sealers on Lowes.com

Review

4.4 out of 5

426 Reviews

88% Recommend this product

Ratings may include incentivized customer reviews.

Read All Reviews

+ 46

What Customers Are Saying

The Minwax Helmsman Spar Urethane is a polyurethane product that provides a smooth, protective finish. Many users report it is easy to apply and offers excellent weathering and UV resistance, making it suitable for outdoor projects like furniture and doors. However, some reviewers noted issues with odor, bubbling, and incomplete hardening, so proper application and ventilation are important. Overall, the product seems to offer a durable, professional-looking finish, though specialized marine varnishes may be preferable for maximum outdoor performance.

Customer review summary generated by AI, including incentivized reviews.

427 Customer Reviews

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Seal wood

Great quality

Joe BigJuly 22, 2026
Verified Purchaser

Was this Review Helpful ?

Patience Yields Best Results

Would Recommend

6 hours is the minimum drying time for sanding/recoating. I counsel patience. 12 - 24 hours is what I have always followed and never had a problem. I usually apply 5 coats (which may be extreme). The final finish is spectacular, especially after curing for a minimum of 48 hours. If you're in a hurry and don't have the luxury of time use the Minwax water-based varnish. I'm an ol' guy have used spar varnish for the past 30 years and it's never let me down..

JJJ2June 27, 2026

From minwax.com

High quality and consistent

I've tried many types of spar varnish and this varnish delivers high quality consistent results.

pk221June 19, 2026
Verified Purchaser

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We live there, all is easy to find, online is best

Would Recommend

VoniGJune 14, 2026
Verified Purchaser

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You always get what you pay for.

Always great.

ErikJune 14, 2026
Verified Purchaser

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Great color!

Would Recommend

Perfect description of color, application was smooth and uniform

AllisonJune 12, 2026
Verified Purchaser

https://photos-us.bazaarvoice.com/photo/2/cGhvdG86bG93ZXM/8baee940-0317-5fc4-8425-efb59f8f9dcc

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COMPARE PRODUCTS

		Name	Current Item MinwaxHelmsman Clear Semi-gloss Oil-based Interior/Exterior Spar urethane ( 1-quart )
		Ratings	426
		Sheen	Semi-gloss
		Moisture Resistant
		Type	Spar urethane
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