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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✨ Protect & Perfect Your Wood, Rain or Shine! ☀️💧

WEATHER WARRIOR - Creates a durable barrier against rain and moisture, ensuring long-lasting outdoor beauty.
SUN SMART SHIELD - Advanced UV blockers protect wood from fading and graying, keeping your surfaces vibrant season after season.
SEASON READY FLEX - Special oils allow the finish to expand and contract with wood, preventing cracks and peeling through temperature swings.
VERSATILE ELEGANCE - Perfect for doors, windows, trim, cabinets, countertops, and outdoor furniture—elevate every surface with one premium product.
CRYSTAL CLEAR BRILLIANCE - Satin finish enhances light-colored woods and stains with a sleek, professional look that dries quickly for fast project completion.

Minwax Helmsman Spar Urethane Quart in Satin offers a crystal-clear, UV-blocking finish that protects wood surfaces from sun damage, moisture, and temperature fluctuations. Ideal for both indoor and outdoor use, it dries quickly and provides a flexible, durable barrier that preserves the natural beauty of your woodwork.

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Coverage	Moderate to High Coverage
Recommended Uses For Product	exterior
Liquid Volume	32 Fluid Ounces
Item Form	Liquid
Global Trade Identification Number	00027426632059
Manufacturer	Paint Sundries Solutions
UPC	795871188772 027426632059
Country of Origin	USA
Item model number	63205444
Product Dimensions	10.8 x 10.8 x 12.42 cm; 453.59 g
ASIN	B005DMJKMY

Minwax 63205444 Helmsman Spar Urethane, Quart, Satin

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