Name: Minwax Helmsman Clear Semi-gloss Water-based Interior Spar urethane ( 1-quart )
Brand: Minwax
SKU: 999914387
Rating: 4.4 (239 reviews)

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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 Water Based Helmsman® Spar Urethane is a crystal clear, water-based finish that is specially formulated to protect wood against nature's toughest conditions
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
Crystal clear finish is ideal for use over light-colored woods and stains
Dries quickly and can be recoated after only 2 hours
Cleans up easily with warm water
Easy application with a high-quality synthetic bristle brush
Not recommended for use on floors, decks, or fences

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	Water-based
Sub-Brand	Helmsman	Clean-up Method	Soap and water

Dimensions
Maximum Coverage Area (Sq. Feet)	126	Container Size	1-quart

Features
Dry to Touch	1-2 hours	Dry to Re-Coat	1-2 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

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Review

4.4 out of 5

239 Reviews

87% Recommend this product

Ratings may include incentivized customer reviews.

Read All Reviews

+ 25

What Customers Are Saying

The Minwax Water Based Helmsman Spar Urethane appears to be a high-quality product that delivers excellent results for many users. Key positives include easy application, a durable and protective coating, and the ability to enhance the natural color and grain of the wood. However, some users reported issues with uneven coverage, potential discoloration, and incompatibility with certain wood types. Overall, the product seems to be versatile and well-performing when used on appropriate surfaces and applied carefully.

Customer review summary generated by AI, including incentivized reviews.

239 Customer Reviews

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Good product recommend it

Would Recommend

Great coverage nd goes on easy. Slight change in color of cedar wood after use but nice satin finish

Kfb1June 17, 2026
From Helmsman Clear Satin Water-based Interior Spar urethane ( 1-gallon ) Verified Purchaser

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Easy to use and apply

Would Recommend

Went on smooth with no clumps. I used this on a teak outdoor table and is holding up really well.

AndreaMay 20, 2026
From Helmsman Clear Gloss Water-based Interior Spar urethane ( 1-quart ) Verified Purchaser

https://photos-us.bazaarvoice.com/photo/2/cGhvdG86bG93ZXM/c3d5ab19-36b2-5b6d-a9c3-cb1209a10a32

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Dries very quickly

Would Recommend

Worked like a charm

TroyMay 20, 2026
From Helmsman Clear Gloss Water-based Interior Spar urethane ( 1-gallon ) Verified Purchaser

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A little goes a long way

Would Recommend

I was pleased with this sealant; it dried clear, and dried super fast. A little went a long way too. It wasn’t as viscus as I was expecting - so you need to watch for it splashing a bit , but we don’t have any complaints.

Great sealantMay 14, 2026
From Helmsman Clear Satin Water-based Interior Spar urethane ( 1-gallon ) Verified Purchaser

Was this Review Helpful ?

Protects from the rain

Would Recommend

Solid product

SusanMay 12, 2026
From Helmsman Clear Satin Water-based Interior Spar urethane ( 1-quart ) Verified Purchaser

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COMPARE PRODUCTS

		Name	Current Item MinwaxHelmsman Clear Semi-gloss Water-based Interior Spar urethane ( 1-quart )
		Ratings	239
		Sheen	Semi-gloss
		Moisture Resistant
		Type	Spar urethane
MinwaxClear Semi-gloss Water-based Interior Spar urethane ( 1-quart )	MinwaxHelmsman Clear Semi-gloss Oil-based Interior Spar urethane ( 1-quart )	MinwaxHelmsman Clear Satin Oil-based Interior Spar urethane ( 1-quart )	MinwaxHelmsman Clear Gloss Oil-based Interior Spar urethane ( 1-gallon )	MinwaxHelmsman Clear Gloss Oil-based Interior Spar urethane ( 1-quart )	MinwaxHelmsman Clear Satin Oil-based Interior Spar urethane ( 1-gallon )	MinwaxHelmsman Clear Semi-gloss Oil-based Interior Spar urethane ( 1-gallon )	MinwaxHelmsman Clear Semi-gloss Oil-based Interior Spar urethane ( 1-gallon )	MinwaxPolyurethane for Floors Clear Semi-gloss Water-based Interior Polyurethane ( 1-gallon )
140	1252	1247	54	1247	1247	50	1247	94
Semi-gloss	Semi-gloss	Satin	Gloss	Gloss	Satin	Semi-gloss	Semi-gloss	Semi-gloss

Spar urethane	Spar urethane	Spar urethane	Spar urethane	Spar urethane	Spar urethane	Spar urethane	Spar urethane	Polyurethane