Question 1

Can this product be applied to painted surfaces.

Accepted Answer

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

Question 2

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

Accepted Answer

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

Question 3

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

Accepted Answer

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.

Question 4

Can this product be applied over an exterior wood stain?

Accepted Answer

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	B001W44GHQ
Best Sellers Rank	#4,509 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #5 in Household Polyurethanes, Shellac & Varnish
Brand Name	Minwax
Compatible Material	Wood
Coverage	Full
Customer Reviews	4.6 4.6 out of 5 stars (665)
Finish Types	Semi-Gloss
Global Trade Identification Number	00027426630512
Included Components	Minwax 630510444 Water Based Helmsman Spar Urethane, quart, Semi-Gloss
Item Form	Liquid
Item Type Name	Spar Urethane
Item Weight	2.3 pounds
Liquid Volume	32 fluid ounces
Manufacturer	Minwax
Manufacturer Part Number	630510444
Manufacturer Warranty Description	Warranty
Material Type	water based
Model Number	630510444
Number of Items	1
Number of Packs	1
Recommended Uses For Product	exterior-and-interior
UPC	027426630512
Unit Count	32 Fluid Ounces

Minwax Water Based Helmsman Spar Urethane, Quart, Semi-Gloss

Details

Details

Description

Specifications

Common Questions