Shellac vs. Polyurethane: Find Your Perfect Wood Finish

Stuck choosing between shellac vs polyurethane?

You’re not alone. Picking the perfect finish for your woodworking project can feel overwhelming. So many options are available on the hardware store shelves, each with different advantages and disadvantages. One finish is better for a vintage look but lacks durability; another has an easier application but lacks making wood grain pop. The choices are endless and confusing.

So is there a right choice?

The right choice really depends on your specific needs. Not helpful, I know! But I promise the details below will help you to decide.

In this guide, we’ll unravel the pros, cons, and ideal uses for shellac and poly, both clear finishes. By the end, you’ll know exactly when to choose shellac, when to use polyurethane, and how they stack up against each other.

Let’s dive in!

What Is Shellac?

Did you know shellac comes from bugs? Yep, the lac bug secretes resin, which is then harvested, processed, and dissolved in alcohol to create a finish that woodworkers have cherished for centuries. It’s probably one of the oldest wood finishes that is still going strong.

Why choose shellac?

Shellac is beloved for its ease of use and warm tone in the wood. But that’s not all it’s pros and con’s. Below is a shortlist or check out this detailed list on all the advantages and disadvantages of shellac.   

Pros:

• Super easy to apply and repair.
• Dries fast—no need to wait hours between coats!
• Creates a warm, rich tone that enhances the natural beauty of the wood.

Cons:

• It’s considered a soft finish and not the most durable option. It doesn’t stand up well to water, heat or alcohol.

I was always hesitant to start using shellac. It requires the extra step of melting shellac flakes in alcohol before being able to apply it (unless you purchase already finished shellac, but that’s more pricey.)

But once I dove in, learning just how easy it was to make and the shocking difference it can create to the wood it’s applied to, I was sold!

If you’re restoring antiques or working on decorative pieces, shellac’s classic charm might be just what you need.

Want to learn more about shellac’s unique properties? Read our guide to shellac wood finish.

What Is Polyurethane?

Looking for a topcoat that’s tough as nails? Polyurethane might just be your new best friend. Unlike shellac, it’s a synthetic, polymer-based finish in oil- and water-based varieties.

Why choose polyurethane?

It’s durable, versatile, and long-lasting.

Pros:

• Exceptional resistance to water, heat, and everyday wear and tear.
• Available in various sheens—from satin to high gloss—to suit your style.
• Provides years of protection, even in high-traffic or outdoor areas.

Cons:

• Slower drying time, especially for oil-based types.

I initially struggled to find a water-based poly in the Netherlands. Why?

Well, because it is often mislabeled.

I use Meubellak from Hermadix, which would translate into furniture lacquer or varnish, depending on Google Translate’s mood that day.

However, a flip of the can and reading the description clearly state that this is a water-based polyurethane.

Why is it not clearly stated on the can? Probably down to marketing and appealing to a group used to the work lak for finishing wood.

Shellac vs. Polyurethane: Key advantages and disadvantages

Still unsure which to choose? Let’s break it down side-by-side:

Feature	Shellac	Polyurethane
Durability	Low, easily damaged	High, long-lasting
Application	Simple, quick drying	Requires care, slower drying
Repairs	Easy to touch up	Difficult to fix
Best For	Decorative or vintage finishes	Floors, countertops, outdoor

When Should You Choose Shellac?

Shellac is your go-to when:

• You’re restoring antique furniture. Its natural warmth enhances vintage pieces beautifully.

• You’re working on decorative or low-traffic items. Think picture frames or accent tables.

• You’re short on time. Shellac dries quickly, so you can apply multiple coats in one afternoon.

For example, mantel clocks are often finished with shellac. It provides that decorative, high gloss finish and warm wood tone and is a decorative item.

Thinking about trying shellac? Check out our shellac application tips.

When Should You Choose Polyurethane?

Polyurethane is the hero of durability. Choose it when:

• You need long-lasting protection. For floors, dining tables, and countertops, it’s unbeatable.

• You’re finishing outdoor furniture. Its resistance to moisture and UV rays makes it perfect for exterior projects.

• You want a low-maintenance finish. Polyurethane can handle years of use without touch-ups.

I often use polyurethane to top coat any paintwork to provide an extra coat of durability. But I was hesitant to use on wood alone as the water-based variety does not necessary give a warm glow to wood like shellac does.

Need a step-by-step guide to flawless application? Read our polyurethane tutorial (coming soon).

Can You Use Polyurethane Over Shellac?

Here’s the million-dollar question: Can you mix and match these finishes? Absolutely! But there’s a catch to consider:

Make sure the shellac is dewaxed.

Wax interferes with polyurethane’s adhesion, leading to peeling or flaking. Check out more differences between waxed and dewaxed shellac. 

This is my favourite way to finish any cocktail cabinet. It allows the wood to glow and provides the durability that shellac does not have. I’ve used it many times and have had great success.

Want to avoid costly mistakes? Learn how to combine poly and shellac like a pro.

Final Thought: Polyurethane or Shellac?

At the end of the day, your choice boils down to what matters most for your project and the purpose of your project:

• Choose shellac for its vintage charm, quick drying time, and easy application.

• Opt for polyurethane if you need bulletproof durability and long-lasting protection.

Here’s the key: Don’t be afraid to test both finishes on scrap wood first. The right finish is the one that brings out the best in your project and fits your lifestyle. If you are still left undecided, consider using both finishes! Both finishes are excellent choices, and combining them provides a finish that is the best in both worlds.

Share in the comments which finish is your go-to!