Hey there! As a supplier of Waterborne Polyurethane Finish, I often get asked how it stacks up against varnish. So, I thought I'd write this blog to give you the lowdown on both and help you decide which one is the right fit for your project.
What's Waterborne Polyurethane Finish?
Waterborne Polyurethane Finish is a type of coating that uses water as a carrier instead of solvents. This makes it a more environmentally friendly option compared to traditional solvent - based finishes. It's known for its durability, clarity, and resistance to scratches, stains, and chemicals.
One of the big advantages of waterborne polyurethane is its quick drying time. You can usually apply multiple coats in a single day, which speeds up the project timeline. It also has a low odor, so you don't have to deal with that strong, unpleasant smell that often comes with solvent - based products.
What's Varnish?
Varnish, on the other hand, is a clear, hard - drying protective finish. It's typically made from a combination of resins, oils, and solvents. Varnish has been around for a long time and is a popular choice for many woodworking projects. It provides a rich, warm look to wood, enhancing its natural beauty.
Varnish can be either oil - based or water - based. Oil - based varnishes are known for their deep, glossy finish and excellent durability. However, they take longer to dry and have a strong odor. Water - based varnishes dry faster and have a lower odor, but they may not be as durable as their oil - based counterparts.
Comparison in Terms of Application
Ease of Application
Waterborne Polyurethane Finish is generally easier to apply. It has a lower viscosity, which means it flows more smoothly and is less likely to leave brush marks. It can be applied with a brush, roller, or spray gun, giving you more options depending on your project. Since it dries quickly, you don't have to worry about dust or debris getting trapped in the finish while it's still wet.
Varnish, especially oil - based varnish, can be a bit trickier to apply. It has a higher viscosity, so it requires more skill to get a smooth finish. You need to be careful not to over - brush it, as this can cause streaks and bubbles. And because it takes longer to dry, you have to be extra careful to keep the work area clean.
Number of Coats
Waterborne Polyurethane Finish usually requires fewer coats to achieve the desired level of protection. Two or three coats are often enough for most projects. This not only saves time but also reduces the amount of product you need to use.
Varnish may require more coats, especially if you want a high - gloss finish. Oil - based varnishes may need four or more coats to build up a thick, durable finish. This means more time and effort spent on the project.
Comparison in Terms of Appearance
Clarity
Waterborne Polyurethane Finish offers excellent clarity. It doesn't yellow over time, so your project will maintain its original color and appearance. This is especially important for projects where you want to showcase the natural beauty of the wood.
Varnish, especially oil - based varnish, may yellow slightly over time. This can change the color of the wood, giving it a warmer, more aged look. While some people like this effect, others prefer the clear, unaltered look that waterborne polyurethane provides.
Gloss Level
Waterborne Polyurethane Finish comes in a variety of gloss levels, from matte to high - gloss. You can choose the one that best suits your project. The high - gloss options can provide a very shiny, professional - looking finish.
Varnish also offers different gloss levels, but the oil - based versions tend to have a deeper, more luxurious gloss. However, achieving a consistent gloss level with varnish can be more challenging, especially if you're applying multiple coats.
Comparison in Terms of Durability
Scratch Resistance
Waterborne Polyurethane Finish is highly scratch - resistant. It forms a tough, protective layer on the surface of the wood, making it suitable for high - traffic areas. This is great for furniture, floors, and other items that are likely to get bumped or scratched.
Varnish also provides good scratch resistance, but oil - based varnishes may be more prone to scratching compared to waterborne polyurethane. However, with proper maintenance, a well - applied varnish can still provide long - lasting protection.
Chemical Resistance
Waterborne Polyurethane Finish has excellent chemical resistance. It can withstand exposure to common household chemicals, such as cleaning products and spills. This makes it a great choice for kitchens, bathrooms, and other areas where there may be contact with chemicals.
Varnish may not be as resistant to chemicals as waterborne polyurethane. Oil - based varnishes can be damaged by some solvents and chemicals, so you need to be more careful when cleaning and maintaining surfaces finished with varnish.
Environmental Impact
Waterborne Polyurethane Finish is a more environmentally friendly option. Since it uses water as a carrier, it has a lower volatile organic compound (VOC) content. This means less pollution and a healthier working environment. It also complies with many environmental regulations, which is important for both commercial and residential projects.
Varnish, especially oil - based varnish, has a higher VOC content. The solvents used in oil - based varnishes can release harmful fumes into the air, which can be a health hazard. Water - based varnishes have a lower VOC content than oil - based ones, but they still may not be as low as waterborne polyurethane.
Cost
The cost of Waterborne Polyurethane Finish and varnish can vary depending on the brand, quality, and quantity. Generally, waterborne polyurethane may be a bit more expensive upfront. However, considering its quick drying time, fewer coats required, and long - term durability, it can be a cost - effective option in the long run.
Varnish can be more budget - friendly, especially the lower - quality options. But if you need a high - quality, durable finish, the cost of multiple coats and the potential for re - finishing over time may add up.
Our Products and Related Links
As a supplier of Waterborne Polyurethane Finish, we also offer other high - quality coating products. Check out our Epoxy Self - leveling Floor Paint, Epoxy Solvent Free Topcoat, and Epoxy Anti - static Self Leveling. These products are designed to meet the diverse needs of our customers and provide excellent protection and aesthetics.
Conclusion and Call to Action
In conclusion, both Waterborne Polyurethane Finish and varnish have their own pros and cons. Waterborne Polyurethane Finish is a great choice if you're looking for a quick - drying, environmentally friendly, and durable option with excellent clarity. Varnish, on the other hand, is a classic choice that offers a rich, warm look and can be a good option for projects where a traditional finish is desired.
If you're still not sure which one is right for your project, or if you have any questions about our Waterborne Polyurethane Finish or other products, don't hesitate to contact us. We're here to help you make the best decision and provide you with the highest - quality products. Let's start a conversation and see how we can work together on your next project!
References
- "Wood Finishing: The Complete Guide" by Bob Flexner
- "The New Encyclopedia of Wood Finishing" by Robert W. Lang