Can this product be applied to painted surfaces.

I have used it over wood carvings painted with acrylic paints and have have excellent results in an outdoor evironment.

can i apply the oil based urethane over a water based paint to protect it?

You can but this is why you should use a water based poly over the oil poly Oil based poly has an amber hue, whereas water based poly is clear. An oil based polyurethane will continue to amber and darken over time, while water based poly will remain clear for the lifetime of the hardwood floor. ... Water based poly dries much faster, and several coats (up to 4) can be applied in one day. This explains why fritz the cat who did answer this question as well is why theirs yellowed

How is the viscocity out of the can, is it more like warm syrup or more like water...or somewhere in between? Thank you!

Maybe Slightly Thinner than warm Syrup, So probably between Warm Syrup & Water. A word of advice though, I had an extremely difficult time working with this product & had to sand and reapply many coats to get a satisfactory finish. It dries fast & if you run a brush over it after is has sat more than a minute it will create rough brush marks. Additionally if you apply more than a very thin layer it will crack similar to a crackle pattern. Unless you are putting this over a pure white background I would recommend that you use the standard "Crystal Clear" non-water based urethane. It has only a light yellow tint and is much easier to work with in my experience.

Can this product be applied over an exterior wood stain?

In fact it can, but being unfamiliar with the product, I purchase it thinking that it's use would result in a shine. I learned that "spar" must mean something other than gloss or high gloss. I then purchased the "Minwax Gloss aerosol which gave me the desired result, although several coats were required.

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✨ Elevate your wood’s glow & guard it like a pro! ✨

YEAR ROUND SHIELD - Protects wood from rain, sun, and seasonal shifts with advanced UV and moisture resistance.
GLOSSY MODERN EDGE - Delivers a sleek, high-gloss finish that elevates any wood surface with a professional shine.
SPRAY ON CONVENIENCE - Aerosol format for quick, even coverage—ideal for busy pros who demand efficiency.
VERSATILE APPLICATION - Perfect for both indoor and outdoor projects—doors, cabinets, bar tops, and patio furniture.
DURABILITY YOU CAN TRUST - Resistant to chipping, cracking, and checking, ensuring your wood stays flawless longer.

Minwax Helmsman Spar Urethane Aerosol Spray is a premium 11.5 oz gloss finish designed to protect and beautify wood surfaces indoors and outdoors. Featuring UV blockers and moisture-resistant oils, it forms a flexible, durable barrier that prevents fading, cracking, and weather damage year-round. Trusted since 1904, Minwax delivers professional-grade protection with effortless spray application for a sleek, long-lasting shine.

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Coverage	UV protection, water resistance, weather resistance
Recommended uses for product	Exterior, Cabinets, Interior, Crafts
Liquid volume	11.5 Fluid Ounces
Item form	Aerosol
Global Trade Identification Number	00027426332508
Manufacturer	Minwax
UPC	027426332508
Part number	33250000
Item Weight	363 g
Product Dimensions	7.62 x 7.62 x 22.86 cm; 362.87 g
Item model number	33250000
Size	11.5 oz Aerosol
Color	Gloss
Style	Gloss
Finish	Gloss
Pattern	Urethane
Item Package Quantity	1
Special Features	UV Resistant, Weather Resistant
Included components	MINWAX - 27426332508
Batteries Included?	No
Batteries Required?	No

MinwaxHelmsman Spar Urethane Aerosol Spray, 11.5 ounce, Gloss

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