Which is better oil based or water based varnish?
Furthermore, which is better oil based or water based polyurethane?
Oil based polyurethane looks better. It has a more depth - both in color and shine and it looks the way we expect hardwood to look. Water based polyurethane has both a duller color and a duller finish. The water based polyurethane (left) is lighter and duller than the oil based poly on the right.
Also Know, can you put water based varnish over oil based varnish? Answer: In most cases, it is OK to use a water-based polyurethane over an oil-based finish in good condition. You should remove grease, dirt and wax by scrubbing the surface with a wood prep/cleaner/de-glosser, or mineral spirits and synthetic steel wool.
Correspondingly, is water based varnish any good?
Advantages of Water-Based Varnish It does not affect the color of the surface on which you applied it. It is not a fire hazard. It builds up quickly as well because it has a high solid content. After use, water-based varnish is easy to clean up.
How long will Polyurethane last?
Gloss oil-based varnish, polyurethane and Danish oil can last 10 or 20 years, though satin finishes and stains may fail sooner as pigments and flattening agents disable the driers. Water-based coatings and paints can also be viable longer than three years. Shellac, though, can go bad in under a year.