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.

ASIN	B005DMJKMY
Best Sellers Rank	#109,971 in Home Improvement ( See Top 100 in Home Improvement ) #46 in Household Wood Stains
Brand	Minwax
Brand Name	Minwax
Compatible Material	Wood
Country of Publication	USA
Coverage	Moderate to High Coverage
Customer Reviews	4.6 out of 5 stars 996 Reviews
Finish Type	Satin
Global Trade Identification Number	00027426632059
Included Components	MINWAX - 27426632059
Item Form	Liquid
Item Type Name	Spar Urethane
Item Weight	1 Pounds
Liquid Volume	32 Fluid Ounces
Manufacturer	Paint Sundries Solutions
Material	Crystal,Wood
Material Type	Crystal,Wood
Product Finish Type	Satin
Recommended Uses For Product	exterior
UPC	795871188772 027426632059
Unit Count	32.0 Fluid Ounces

63205444 Helmsman Spar Urethane, Quart, Satin

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