Has the same low VOC levels as water-based polys.Ĭhoose whichever sheen you like best there's no difference in durability. Fast drying and compatible with all woods cleans up with water. Water-based oil-modified: Appears cloudy in the can but dries to a tough, amber-color film, like an oil.Never use ammonia-based cleaners on the cured film. Lower in VOCs than oil-based finishes but still requires good ventilation during application. More watery than oil-based polys, so more coats are needed. Good if you're trying to preserve a wood's color. Water-based: Looks like milk in the can but dries crystal clear.Higher in VOCs than water-based finishes and therefore not available in all parts of the country. Dries more slowly than water-based polys, so there's a longer wait between coats. Forms a hard, durable film in a few coats. Oil-based: Turns slightly amber, which warms up a wood's color.Consider the different characteristics of each type before you buy. Restrictions on VOC emissions have spurred the development of alternatives to oil-based polys. If you want wood to keep its light color, use a water-based poly. Some polys have oils that give wood a warm, amber tone.
The result is a finish that's much more resistant to water, solvents, abrasion, and impacts than traditional varnishes.
It's a kind of super-tough varnish formulated so that its microscopic chains of resin molecules will bond tightly with one another as it dries. Use this guide to learn more about choosing and using polyurethane, the toughest of the clear coatings. Coating wood cabinetry, furniture, or trim with a clear finish, whether you stain it or not, gives it richness and depth while protecting it from knocks, scrapes, and the weather. Without some kind of finish to protect it from the elements, wood can become as dry and lifeless as day-old toast.
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